a unified bilevel programming framework for price based market clearing under marginal pricing market clearing in restructured power systems is mostly implemented through an offer based setting with the goal of maximizing social welfare this approach leads to sound results from an economic viewpoint when generation offers reflect true production costs however offers may significantly differ from actual costs in practice thus yielding undesired distortion under a marginal pricing scheme this paper presents a general bilevel programming framework for alternative market clearing procedures dependent on market clearing prices rather than on offers the resulting nonlinear mixed integer bilevel programming formulation is transformed into an equivalent single level mixed integer linear program suitable for efficient off the shelf software the bilevel formulation is investigated through a particular instance of price based market clearing driven by consumer payment minimization this problem has recently received considerable attention due to the open challenges posed from both modeling and computational perspectives numerical results are provided to illustrate the performance of the proposed approach

is the price level tied to the m2 monetary aggregate in the long run a long run link between money and prices is evident for the united states since the korean war if the m2 measure of money is used and the velocity of m2 v2 is modeled as a mean reverting series this link between m2 and prices is the basis for a dynamic model of inflation that compares favorably in forecasting exercises with phillips curve and more typical monetarist approaches the behavior of v2 is examined from 1870 to the present providing a basis for reconsidering previous findings that v2 follows a random walk copyright 1991 by american economic association

is there a role for monetary aggregates in the conduct of monetary policy abstract we examine the potential policy role of monetary aggregates by attempting to use them as effectively as possible in the analysis of empirical relationships we focus on their role as information variables since any more ambitious use such as in a policy rule would presuppose some information content in the aggregates our results show that in the united states since 1979 the monetary aggregates fall considerably short of those requirements and results with german m3 are hardly more favorable we also investigate whether empirical relationships are not reflective of information relationships because of the use of these variables in countercyclical policy the results are not consistent with that interpretation

thermal plant bids and market clearing in an electricity pool minimization of costs vs minimization of consumer payments the spanish wholesale electricity market started on january 1st 1998 though it is based on simple price quantity bids it incorporates some provisions to take thermal plant running requirements into account this paper presents these rules and its mathematical treatment focusing on a possible implementation of the minimum income condition which allows thermal generators to declare minimum stable loads it also shows another key point in the debate whether the algorithm should minimize costs or consumer payments

monetary policy strategies for latin america the authors examine possible monetary policy strategies for latin america that may help lock in the gains the region attained in the fight against inflation in the 1990s instead of focusing the debate about the conduct of monetary policy on whether the nominal exchange rate should be fixed or flexible the focus should be on whether the monetary policy regime appropriately constrains discretion in monetary policymaking three basic frameworks deserve serious discussion as possible long run strategies for monetary policy in latin america the authors examine the advantages and disadvantages of a hard exchange rate peg monetary targeting and inflation targeting in light of monetary policy s recent track record in several latin american countries looking for clues about which of the strategies might be best suited to economies in the region the answer it depends on the country s institutional environment some countries appear not to have the institutions to constrain monetary policy if discretion is allowed in those countries there is a strong argument for hard pegs including full dollarization that allow little or no discretion to monetary authorities in countries such as chile which can constrain discretion inflation targeting is likely to produce a monetary policy that keeps inflation low yet appropriately copes with domestic and foreign shocks monetary targeting as a strategy for latin america is not viable because of the likely instability of the relationship between inflation and monetary aggregates of which there is ample international evidence no monetary strategy can solve the basic problems that have existed in latin american economies for a long time the authors welcome the recent move in latin american countries toward inflation targeting but say no policy will succeed unless government policies also create the right institutional environment

the demand for money a structural econometric investigation this study empirically investigates dynamic microfoundations for the conventional static money demand equation an intertemporal substitution model with the addilog utility function yields a money demand relationship that closely approximates the double log specification results from previous empirical studies largely support the derived equation estimations with quarterly u s data support cointegration among real per capita m1 and consumption and an after tax long term interest rate for the post 1980 period estimated short run intertemporal interest rate elasticities of consumption vary from 0 26 to 0 93 estimated long run elasticities of substitution between consumption and money range from 0 26 to 0 41

money income prices and interest rates including data from the 1980s sharply weakens the postwar time series evidence indicating significant relationships between money however defined and nominal income or between money and either real income or prices separately focusing on data from 1970 onward destroys this evidence altogether evidence indicating cointegration of real income and real money balances with due allowance for the effect of interest rates also deteriorates when the sample extends through the 1980s a positive finding is that the spread between the commercial paper rate and the treasury bill rate consistently contains highly significant information about future movements in real income copyright 1992 by american economic association

us domestic currency in forecast error variance decompositions of inflation and output we find that domestic currency currency corrected for foreign holdings has a substantial share in forecast error variance decomposition of us inflation we also find that domestic currency has higher share of the forecast error variance decomposition of us real output than any other narrow monetary aggregate we consider

the behavior of money and other economic variables two natural experiments abstract the object of this paper is to test the performance of the quantity theory model and the related proposition of monetary neutrality in a context in which to use bernanke s phraseology money move d for reasons that were plausibly unrelated to the current state of the economy we investigate this question using data from two recent episodes of monetary policy regime change the move to floating exchange rates throughout the industrialized world following the breakdown of bretton woods in the early 1970s and the shift toward less expansive monetary policy that to varying degrees took place in these countries a decade or so later the results of this exercise are highly positive the money price relationship that we observe is fully consistent with theory growth shifts in the nominal stock of money and in the price level are highly correlated and bear a one to one relation to one another growth shifts in exchange rates are significantly related both to growth shifts in relative price levels and to growth shifts in relative excess supplies of money the classical neutrality proposition in this context superneutrality in general receives strong though not totally unambiguous support

interpreting euro area inflation at high and low frequencies abstract several authors have recently interpreted the european central bank s ecb s two pillar framework as separate approaches to forecast and analyse inflation at different time horizons or frequency bands the ecb has publicly supported this understanding of the framework this paper presents further evidence on the behaviour of euro area inflation using band spectrum regressions which allow for a natural definition of the short and long run in terms of specific frequency bands and causality tests in the frequency domain the main finding is that variations in inflation are well explained by low frequency movements of money and real output growth and high frequency fluctuations of the output gap

some international evidence on the quantity theory of money this paper develops a two equation model of money interest rates and inflation based on the simple quantity theory an d fisher s hypothesis about nominal interest rates the model has both within equation and cross equation restrictions that are tested on long run average cross country data covering the period 1962 88 the major finding is that the restrictions cannot be easily rejected and this suggests that the behavior of interest rates and inflation in a major part of the postwar period can be understood in terms of classical monetary forces copyright 1993 by ohio state university press

a stochastic multi layer agent based model to study electricity market participants behavior this paper presents a new stochastic multi layer agent based model to study the behavior of electricity market participants the wholesale market players including renewable power producers are modeled in the first layer of the proposed multi agent environment the players optimize bidding offering strategies to participate in the electricity markets in the second layer responsive customers including plug in electric vehicle pev owners and consumers who participate in demand response dr programs are modeled as independent agents the objective of the responsive customers is to increase their benefit while retaining welfare the interaction between market players in day ahead and real time markets is modeled using an incomplete information game theory algorithm due to the uncertainties of resources and customers behavior the model is developed using a stochastic framework a case study containing wind power producers wpps pev aggregators and retailers providing dr is considered to demonstrate the usefulness and proficiency of the proposed multi layer agent based model

the success of the fed and the death of monetarism i introduction there has been a significant reduction in the macroeonomic volatility in the u s economy during the last 20 yrs the standard deviation of the central bank s target variables like inflation and nominal gross domestic product gdp declined substantially however at the same time the standard deviation of monetary aggregates has increased 1 this unique macroeconomic phenomenon is also associated with the disappearance of correlation between inflation and money growth this is in contrast to the monetarist argument that suggests that an important cause of economic instability is excess variation in the growth rate of money the most famous monetarist prescription for monetary policy is milton friedman s proposal that the growth rate of money should be constant there is however no evidence of falling variations in the growth rate of money over the last 20 yrs in fact the standard deviation of the rate of growth of monetary base has increased from 1 63 during 1960 1982 to 3 1 during 1983 2003 milton friedman in an interview with taylor 2001 pointed out that there was a breakdown in the relationship between money and gdp after 1980 which came along with a dramatic reduction in the variability of growth rate of gdp friedman says i am puzzled about is whether and if so how they suddenly learned how to regulate the economy does alan greenspan have an insight into the movements in the economy and other shocks that the people don t have friedman further says it looks as if somehow in 1991 1992 they were able to install a good thermostat instead of a bad one is alan greenspan a good thermostat compared to other fed chairmen taylor 2001 there is widespread consensus on the effect of monetary policy on inflation in the long run however there is no consensus on how monetary policy affects real output in the short run there is now a consensus among economists that the original monetarist proposition that there is no long run trade off between inflation and unemployment is correct monetarism can also be viewed as the platform from which the rational expectation revolution took off however the monetarist proposition that economic fluctuation is caused by excessively variable monetary growth has largely been abandoned authors like estrella and mishkin 1997 and feldstein and stock 1994 find that monetary aggregates do not have a significant informational content after 1979 and hence cannot be used as an information variable for the stance of monetary policy their finding is also consistent with dwyer 2002 and dwyer and hafer 1999 who find that there is little correlation of inflation and money growth across countries on quarterly and annual bases after 1979 the literature finds significant correlation e g lucas 1980 between money growth and inflation in the pre 1979 period but this correlation has disappeared after 1979 see table 1 and figures 1 4 if stabilization policy makes inflation a constant then there will be no correlation between inflation and policy as no variable is correlated with a constant according to kochin 1973 if the monetary authority is able to stabilize the economy by optimally setting the variability of the control variables e g monetary aggregates and interest rate then there will be no correlation between the goal variable e g inflation and nominal gdp and the control variable even if the policy is not perfect if the policy is too variable and even if it is well timed then a countercyclical policy adopted by the central bank might lead to greater variability in the goal variable as argued by friedman 1953 poole 1993 1994 and tanner 1993 also argue that one predictable consequence of optimal monetary policy is that the correlation between monetary policy instruments and policy goals will be driven to zero poole further contends that it is obvious to any careful reader of theil 1964 that optimally variable policy will give rise to a zero correlation between policy and goal variable

production cost minimization versus consumer payment minimization in electricity pools algorithms that involve some kind of optimization have been adopted by several electricity pools as a tool to clear the market traditionally this kind of models were used on a cost minimizing basis but recent papers have pointed out that alternative dispatches may be obtained that even with higher production costs result in lower electricity prices for consumers this paper studies this new payment minimization approach including the long term economic signals that it provides and their impact on future investments the authors results show that minimizing consumer payment results in discriminatory scheduling for certain generation resources and may cause in the long run higher prices for consumers

predicting u s recessions financial variables as leading indicators this paper examines the out of sample performance of various financial variables as predictors of u s recessions series such as interest rates and spreads stock prices and monetary aggregates are evaluated individually and in comparison with other financial and nonfinancial indicators the analysis focuses on out of sample performance from one to eight quarters ahead results show that stock prices are useful with one to three quarter horizons as are some well known macroeconomic indicators beyond one quarter however the slope of the yield curve emerges as the clear individual choice and typically performs better by itself out of sample than in conjunction with other variables

the demand for m1 in the u s a 1960 1988 estimated u s m1 demand functions appear unstable regularly breaking down over 1960 1988 e g missing money great velocity decline m1 explosion we propose a money demand function whose arguments include inflation real income long term bond yield and risk t bill interest rates and learning curve weighted yields on newly introduced instruments in m1 and non transactions m2 the model is estimated in dynamic error correction form it is constant and with an equation standard error of 0 4 variance dominates most previous models estimating alternative specifications explains earlier breakdowns showing the model s distinctive features to be important in accounting for the data

indeterminacy bubbles and the fiscal theory of price level determination abstract the recently developed fiscal theory of price level determination contends that there is an important class of policy rules in which there exists a unique rational expectations solution that shows the price level to be dependent upon fiscal policy and independent of monetary variables the present paper argues however that there is an alternative solution to these models that has entirely traditional or monetarist properties this latter solution is arguably more plausible since it is the solution that is typically regarded as the bubble free fundamentals solution the paper s analysis involves the specification of feasible instrument variables

the resurgence of inventory research what have we learned abstract recent empirical and theoretical research on business inventories is surveyed and critically evaluated while most inventory research has had macroeconomic motivations we focus on its microtheoretic basis and on potential conflicts between theory and evidence the paper asks two principal questions first how can inventories which are allegedly used by firms to stabilize production nonetheless be a destabilizing factor at the macroeconomic level second why if firms are following the production smoothing model is production more variable than sales in many industries we suggest that the so called s s model may help answer both questions

artificial power markets and unintended consequences administrative pricing rules that try to mimic economic equilibria often fail to capture the complexity of real markets and in that failure can distort incentives as much as or more than cost based pricing in this paper the authors provide three examples of the failure of administrative mechanisms meant to mimic a market two of those examples are very relevant to current debates over industry restructuring in each case the pricing rule fails to maximize social welfare even though in the last two examples production cost is minimized

multiple regimes in the us inventory time series a disaggregate analysis abstract switching models have been used previously to document the presence of multiple regimes in the growth rate of the us gdp as fluctuations in inventory investment are known to play a major role in business cycles it is likely that inventory growth patterns are also subject to alternating regimes in the present paper simple and markov switching models are applied to inventory series at different levels of manufacturing and trade with a view to discovering the presence of multiple regimes the findings suggest that the growth rate of retail inventories contains significant regime switches and that these corresponds in all cases with switches in the gdp growth rate regime though some extra switches are noted in the retail inventory series

are economic time series asymmetric over the business cycle it has long been argued that major cyclical variables such as the unemployment rate display an asymmetric behavior over various phases of the business cycle the paper provides a statistical test for this hypothesis using the framework of finite state markov processes i implement a test to see if the behavior of the unemployment rate is characterized by sudden jumps and slower drops it is argued that the framework provided in the paper can also be used to test other sample path properties of economic time series

a model of monetary policy shocks for financial crises and normal conditions in their classic 1999 paper monetary policy shocks what have we learned and to what end christiano eichenbaum and evans cee investigate one of the most widely used methods for identifying monetary policy shocks of its time unfortunately their approach is no longer viable at least not in its original form a major problem stems from the recent behavior of two key variables in their model the fed funds rate and non borrowed reserves we develop a new identification scheme that remedies these diculties but maintains the basic cee framework our empirical specification is motivated by a standard new keynesian dsge model augmented by a simple financial structure the model provides theoretical support for variables we use in place of certain variables that were used in the classic var approach outlined in cee one significant innovation is our use of divisia m4 the broadest monetary aggregate currently available for the united states as the policy indicator variable we obtain four major empirical results that support the use of a properly measured broad monetary aggregate as the policy variable first policy shocks have significant eects on output and on the price level even when an interest rate is included in our model contradicting the new keynesian argument that monetary aggregates are redundant second we develop a model that is not subject to the output price or liquidity puzzles common to this literature contradicting the view that using the interest rate as the policy indicator generally yields more reasonable responses than a monetary aggregate third during normal conditions policy shocks from our divisia based model have similar eects on variables to those found in the fed funds model of monetary policy and where there are dierences our model with divisia m4 obtains results that are more consistent with standard economic theory fourth our preferred specification produces plausible responses to a monetary policy shock in samples that include or exclude the recent financial crisis

equilibrium relationships between money and other economic variables central to the quantity theory of money are a number of important propositions about the long run equilibrium effects of changes in the nominal stock of money on other economic variables a standard way of testing these propositions is to use quarterly or annual data explicitly model the lag structure and then derive the long run solution of the model from the empirical estimates an alternative is to use some type of smoothing procedure to approximate positions of equilibrium and then to use these transformed data directly in testing hypotheses the national bureau technique of averaging data over reference cycle phases is one such method robert lucas s application of fourier transforms in two illustrations of the quantity theory of money 1980 is another and john geweke s method 1982 of frequency decomposition is a third an entirely different way of approaching the problem is to use cross country average rather than time series data as the basic units of observation the advantage according to lucas is that since the two quantity theoretic laws that he examines are obtained as characteristics of steady states or limiting distributions of theoretical models the ideal experiment for testing them would be a comparison of long term average behavior across economies with different monetary policies but similar in other respects p 1006 in this paper i conduct such an experiment the data that i use are for 20 oecd countries over the period 1956 80 the specific relationships that i examine are those between money and the price level money and real income money and interest rates and money and exchange rates in the main the data accord well with the quantity theoretic model classical neutrality holds there is evidence of a fisher effect albeit a less than complete effect on interest rates finally the data are consistent with long run purchasing power parity and hence correspondingly with a long run monetary approach to exchange rate determination

inflation and monetary regimes abstract correlations of inflation with the growth rate of money increase when data are averaged over longer time periods correlations of inflation with the growth of money also are higher when high inflation as well as low inflation countries are included in the analysis we show that serial correlation in the underlying inflation rate ties these two observations together and explains them we present evidence that averaging increases the correlation of inflation and money growth in more when the underlying inflation rate has higher serial correlation

money growth output growth and inflation estimation of a modern quantity theory 1 introduction during the years 1980 1993 annual inflation averaged 81 5 in latin america 12 3 in africa but only 6 4 among 16 countries in the oecd within latin america inflation ranged from 8 2 in honduras to 374 3 in argentina and in africa from 0 6 in the republic of the congo to 61 6 in sierra leone what are the reasons for these large differences if cross country differences in inflation can be linked closely to corresponding differences in money growth the reason is clear but if the link is weak then other reasons must be sought several authors have recently rejected money growth as an explanation of inflation there are three lines of criticism the first typified by baba hendry and starr 1992 estrella and mishkin 1997 and cochrane 1998 argues that the income velocity of and thus the demand for monetary aggregates is so unstable that money growth is an unreliable explanation a second criticism closely related to the first is a time series issue if money the price level and output are not cointegrated then there is no stable long run relationship among them some researchers find evidence of cointegration hoffman and rasche 1991 baba hendry and starr 1992 stock and watson 1993 hoffman rasche and tieslau 1995 swanson 1998 carlson et al 2000 dutkowsky and atesoglu 2001 but others do not stock and watson 1989 hafer and jansen 1991 friedman and kuttner 1993 thoma 1994 the cointegration question remains unsettled a third criticism is quite distinct from the first two it argues that in dynamic general equilibrium models with infinitely lived households money in the household utility function and rational expectations there is a class of policy rules with a unique solution that shows that the price level is independent of monetary policy but dependent strictly on fiscal policy this fiscal theory of price level determination breaks any link between money growth and inflation the key fiscalist models were developed by leeper 1991 sims 1994 1996 and woodford 1994 1995 1998 a simple version is summarized succinctly by mccallum 2001 who demonstrates an alternative mathematical solution to a fiscalist model that yields a monetary explanation of the price level but the monetarist foundations are under vigorous attack 1 this paper specifies and estimates a modern version of the quantity theory of money growth real gdp growth and inflation its traditional feature is that a country s long run inflation rate increases with its money growth rate the modern wrinkle is that inflation is mitigated by real gdp growth i assume that real gdp growth is governed by exogenous forces such as growth in human capital physical capital formation and technological progress the model makes no attempt to explain gdp growth rates long run neutrality is presupposed i show that the quantity theory can be written as a regression model whose theoretical implications can easily be tested section 3 this paper then makes three empirical contributions the first is to estimate a long run version of the quantity theory and test its implications statistically sections 5 and 6 the estimates are long run in the important sense that inflation money growth and real gdp growth rates are annual averages computed for 81 countries over the 14 years from 1980 to 1993 short run changes in the series are excluded by design the second is to partition statistically the roles of money and real gdp growth as determinants of inflation section 7 the third is to conduct out of sample forecasts section 8 here we discover how well the model estimated for one group of countries predicts inflation in others this paper differs from previous work in three important ways first earlier research has not been based on theoretically grounded regression models friedman 1956 1968 klein 1956 friedman and friedman 1980 friedman and schwartz 1982 mccandless and weber 1995 rolnick and weber 1997

payment cost minimization auction for deregulated electricity markets using surrogate optimization deregulated electricity markets use an auction mechanism to select offers and their power levels for energy and ancillary services a settlement mechanism is then used to determine the payments resulting from the selected offers currently most independent system operators isos in the united states use an auction mechanism that minimizes the total offer costs but determine payment costs using a settlement mechanism that pays uniform market clearing prices mcps to all selected offers under this setup the auction and settlement mechanisms are inconsistent since minimized costs are different from payment costs illustrative examples in the literature have shown that for a given set of offers if an auction mechanism that directly minimizes the payment costs is used then payment costs can be significantly reduced as compared to minimizing offer costs this observation has led to discussions among stakeholders and policymakers in the electricity markets as to which of the two auction mechanisms is more appropriate for isos to use while methods for minimizing offer costs abound limited approaches for minimization of payment costs have been reported this paper presents an effective method for directly minimizing payment costs in view of the specific features of the problem including the nonseparability of its objective function the discontinuity of offer curves and the maximum term in defining mcps our key idea is to use augmented lagrangian relaxation and to form and solve offer and mcp subproblems by using the surrogate optimization framework numerical testing results demonstrate that the method is effective and the resulting payment costs are significantly lower than what are obtained by minimizing the offer costs for a given set of offers

euro area money demand and international portfolio allocation a contribution to assessing risks to price stability this chapter argues that a stable broad money demand for the euro area over the period 1980 2011 can be obtained by modelling cross border international portfolio allocation we first observe that in this first decade of the new millennium the breakdown of standard money demand specifications for the euro area and the strong developments in annual m3 growth coincide with large net flows in portfolio invest ment in the euro area we then estimate a new money demand which turns out to be stable by including variables explaining portfolio flows omitted in the traditional specifications

money output and inflation in the longer term major industrial countries 1880 2001 i introduction the empirical role of money growth in the macroeconomy has been studied by many researchers using different data and methods the most prominent studies focusing on the quantity theory of money are those of friedman and schwartz 1963 1982 using data averaged over the phases of the business cycle in order to capture longer run movements with u s and u k data back to 1867 the study by mccandless and weber 2001 is a representative example for a different approach for 110 countries in the post wwii period longer run growth rates are approximated by growth of a variable over a 30 year period average growth rates 1 the problem with phase averaging is that it does not deal with possible nonstationarity of the data 2 the problem with growth averages over long periods while informative to a degree is that they have limitations too it is impossible to assess the timing of movements in these variables 3 in the frequency domain the long run is associated with frequency zero which in our terminology is the long run trend previous studies in the frequency domain on the long run neutrality of money at zero frequency include the studies of lucas 1980 and geweke 1986 the theory of spectral analysis provides a rigorous framework for extracting specific frequency bands from the data instead of considering only frequency zero stock and watson 1998 applied the band pass filter of baxter and king 1999 to extract cycles frequency bands for u s data and focused on the business cycle and on mostly the post wwii period christiano and fitzgerald 2003 proposed an improved band pass filter and provided an application to the longer run relation of money and inflation for bands of 8 20 years and 20 40 years in the united states from 1900 to 1997 4 the usefulness of monetary aggregates for conducting monetary policy has been seriously called into question because of the instability of money demand a prominent empirical study is that of estrella and mishkin 1997 recent mainstream new keynesian models have no explicit role for money woodford 2008 a contrasting view is that the longer term role of money is still of relevance for monetary policy the european central bank explicitly emphasizes a supporting role that monetary aggregates should play in order to provide an anchor for inflation expectations hafer haslag and jones 2007 issing 2006 king 2002 nelson 2003 christiano motto and rostagno 2007 provided a theoretical new keynesian model where inflation expectations lose their anchor unless money is monitored and reacted to also beck and wieland 2008 presented a new keynesian model where cross checking with money growth movements improves inflation control similarly assenmacher wesche and gerlach 2006 2007 found a significant role for a low frequency low pass filtered component of money in the empirical new keynesian phillips curve equation 5 in the spirit of friedman 1961 we use long time spans so that our results are unlikely to be because of a specific policy rule in place in a given period we have 122 years of annual data from 1880 to 2001 before the introduction of the euro in 2002 we have real gross domestic product gdp money and consumer price indices cpis with no gaps for 11 industrialized countries 6 the countries included in our study differ in such terms as their institutions fiscal and monetary policies and economic growth rates nonetheless at least in peace time they were similar in generally having comparatively free markets in which prices and interest rates were determined our aim is to apply analytic methods that are free from economic and statistical models as much as possible in order to explore empirical regularities or stylized facts in the data also the focus of our research is the longer run we employ band pass filters to pick out cycles from each time series that last 8 40 years that is the longer term component

improving inflation prediction with the quantity theory this paper focuses on the role of the quantity theory in improving inflation forecasts we find that the cointegration based quantity theory does not hold for the period after 1995 for the u s data however that period is well explained by an adaptive quantity theory based on a functional coefficient cointegration that adapts to the unemployment rate the forecasting exercises show that the adaptive quantity theory has superior predictive power for targeting future inflation

money and output viewed through a rolling window abstract we examine the extent to which fluctuations in the money stock anticipate or granger cause fluctuations in real output using a variety of rolling window and increasing window estimation techniques various models are considered using simple sum as well as divisia measures of m 1 and m 2 income prices and both the t bill rate and the commercial paper rate findings indicate that the relation between income money prices and interest rates is stable as long as sufficient data are used and that there is cointegration among the variables considered although cointegration spaces become very difficult to estimate precisely when smaller windows of data are used further both m 1 and m 2 are shown to be important predictors of income for the entire period from 1960 2 1996 3 based on modified versions of what we term the most damaging specifications from friedman and kuttner 1993 and thoma 1994 our new evidence is based in part on a rather novel model selection approach to examining the relationship between money and income 1998 elsevier science b v all rights reserved

consumer payment minimization in power pool auctions this paper presents a new methodology within the framework of centralized optimization for calculating optimal generation schedules that minimize energy payments by power pool consumers this paper addresses issues related to market structure and the operation of power pools such as bid evaluation generator no load and start up cost recovery generator unit operating constraints and market clearing price determination unlike conventional unit commitment algorithms that minimize total energy production costs the method presented here minimizes payments by power pool consumers a payment minimization objective leads to a different unit commitment and dispatch solution and lower market clearing prices additionally optimal allocation of generator no load and start up costs over the scheduling period is integrated in the bid evaluation process leading to a further reduction in consumer payments

predicting inflation does the quantity theory help i introduction inflation forecasting has played a key role in recent u s monetary policy and this has led to a renewed search for variables that serve as good indicators of future inflation one frequently used indicator based on the phillips curve is the unemployment rate or a similar measure of the output gap as in gerlach and svensson 2003 clark and mccracken 2003 mankiw 2001 and gali and gertler 1999 the phillips curve is believed by many to be the preferred tool for forecasting inflation see e g mankiw 2001 stock and watson 1999a blinder 1997 though as argued by sargent 1999 its use in formulating monetary policy is not without controversy another approach based on the quantity theory of money uses monetary aggregates to predict inflation despite the strong theoretical motivation for this approach though there is little evidence that measures of the nominal money supply are useful for predicting inflation relative to a conventional unemployment rate phillips curve model see stock and watson 1999a for a detailed analysis of the forecast performance of popular inflation indicators stock and watson s results indicate that even simple univariate time series models generally forecast about as well as models that include measures of the money supply so that it is hard to make the case that nominal money supply data have any predictive content for inflation 1 this article evaluates inflation forecasts made by models that allow for prices money and output to be cointegrated and in the process reexamines the question of whether monetary aggregates have marginal predictive content for inflation our work is motivated in part by economic theory as the presence of a cointegrating relationship among the series we look at corresponds to an implicit assumption that prices the money supply and output hang together in the long run an implicit feature of most analyses based on the quantity theory from a statistical point of view a system with cointegrated regressors does not have a finite order vector autoregressive var representation so that a var in differences will be misspecified and may not forecast well regardless of the relevance of the included variables our analysis is therefore focused on the questions are there gains in terms of forecast accuracy from imposing the restriction that prices money and output are cointegrated does it matter whether cointegrating restrictions are imposed a priori based on economic theory or can they be estimated and do models imposing cointegration among prices money and output forecast inflation as well as the phillips curve and other alternative models the econometric framework that we employ is similar to that of stock and watson 1999a but differs from theirs in two ways first stock and watson 1999a consider one year horizon inflation forecasts whereas we consider forecast horizons of up to five years this is potentially important in our context as we include versions of the quantity theory of money in our analysis a theory that arguably may not yield substantive gains to forecasting in the short run additionally future inflation at many horizons is in general of interest to policy makers even if the weight attached to inflation at different horizons is a matter of individual preference so that long run predictions are only unuseful if and when they fail to have marginal predictive content for inflation 2 a second difference between our work and that of stock and watson 1999a is that some of our models differ from theirs including those that impose quantity theory based cointegrating restrictions for example in these types of models we 1 impose a cointegration restriction derived from the assumption of stationary velocity and 2 estimate cointegrating restrictions we also examine a fairly broad variety of linear models including simple autoregressive ar models in levels and differences conventional unemployment rate phillips curve models and var models in levels and differences with money prices and output

results of a study of the stability of cointegrating relations comprised of broad monetary aggregates abstract we find strong evidence of a stable money demand relationship for mzm and m2m through the 1990s though the m2 relation breaks down somewhere around 1990 evidence has been accumulating that the disturbance is well characterized as a permanent upward shift in m2 velocity which began around 1990 and was largely over by 1994 taken together our results support the hypothesis that households permanently reallocated a portion of their wealth from time deposits to mutual funds although this reallocation may have been induced by depository restructuring we argue that the substitution could be explained by appropriately measured opportunity cost

eurosystem monetary targeting lessons from u s data abstract using a small empirical model of inflation output and money estimated on u s data we compare the relative performance of monetary targeting and inflation targeting the results show monetary targeting to be quite inefficient yielding both higher inflation and output variability this is true even with a nonstochastic money demand formulation our results are also robust to using a p model of inflation therefore in these popular frameworks there is no support for the prominent role given to money growth in the eurosystem s monetary policy strategy

the stability of long run money demand in five industrial countries abstract this study provides strong evidence for the stability of long run demand functions for narrowly defined money m1 in five industrial countries u s japan canada u k and west germany using post war quarterly data evidence of stability is examined using two different estimation techniques and through a formal test of parameter constancy designed specifically for cointegrating vectors in the majority of these countries the key to stability is the imposition of a unitary long run income elasticity that is rarely rejected by the data

network constrained day ahead auction for consumer payment minimization this paper presents an alternative day ahead auction based on consumer payment minimization for pool based electricity markets this auction is an instance of price based market clearing wherein market clearing prices are explicitly modeled as decision variables of the optimization the auction design includes network constraints inter temporal constraints associated with generation scheduling and marginal pricing hence consumer payment is expressed in terms of locational marginal prices the proposed solution approach is based on bilevel programming in the upper level optimization generation is scheduled with the goal of minimizing the total consumer payment while taking into account that locational marginal prices are determined by a multiperiod optimal power flow in the lower level in this bilevel programming setting locational marginal prices are the lagrange multipliers or dual variables associated with the nodal power balance equations of the lower level problem the resulting mixed integer linear bilevel program is transformed into an equivalent single level mixed integer linear program suitable for efficient off the shelf software this transformation relies on the application of results from duality theory of linear programming and integer algebra the proposed methodology has been successfully applied to several test systems including the ieee 118 bus system numerical results have been compared with those obtained from declared social welfare maximization

a closer look at long run u s money demand linear or nonlinear error correction with m0 m1 or m2 i introduction the stability of money demand has been a long standing issue 1 lucas 1988 informally analyzes the stability of a log linear m1 money demand function and concludes that real money demand is a stable function and he supports earlier findings of meltzer 1963 with an income or wealth elasticity of around unity 2 with the development of cointegration methods engle and granger 1987 numerous empirical studies have applied these techniques to long run u s money demand examples are baba hendry and starr 1992 haferand jansen 1991 hoffman and rasche 1991 and miller 1991 who find support for a cointegrated money demand model with either m1 or m2 3 king et al 1991 also find support for cointegration with m2 and a short term interest rate in contrast to these studies others have argued against a stable u s money demand function in the postwar period for example friedman and kuttner 1992 do not find support for cointegration particularly when the period march 1970 to april 1990 is considered similarly miyao 1996 studies the behavior of the m2 money demand function over the period from 1959 to 1993 with quarterly data and various interest rates in levels and in logs miyao concludes that m2 is not a useful intermediate target for monetary policy in the 1990s 4 however carlson et al 2000 reach the conclusion that m2 does have predictive content for nominal economic activity and that the real m2 money demand function is stable but only after accounting for financial innovation in the first half of the 1990s two recent papers ball 2001 and stock and watson 1993 focus on especially long data sets for the united states and m1 stock and watson 1993 analyze various estimation methods for cointegrating relationships and illustrate their performance for money demand functions with annual data from 1900 to 1987 they pay particular attention to the postwar period and use monthly data in addition to annual data for this period they employ a semi log linear real m1 money demand model with real net national product and the level of the 6 mo commercial paper rate for the postwar period they also consider the 90 day treasury bill rate and the 10 yr treasury bond rate they compare and contrast their results to those of various others they also carry out recursive estimations to check their results for stability stock and watson 1993 conclude that a long span of data is needed to estimate long run money demand functions precisely their overall evidence is in favor of a stable long run money demand function with an income elasticity near one and an interest rate semielasticity near 0 10 however the postwar data are found to be not very informative a lack of low frequency variation in the postwar data as suggested by lucas 1988 does not allow a disentangling of the effects of output and interest rates on money demand for this time period estimates are imprecise and sensitive to subsample specifications due to substantial colinearity ball 2001 revisits the m1 money demand model of stock and watson 1993 using the same data set but extended through 1996 he applies the same array of estimation techniques as stock and watson did ball obtains precise estimates over the postwar period for his extended data set an income elasticity of approximately 0 5 and a semielasticity of 0 05 for the interest rate he does not find support for a velocity specification the m1 model is not stable over the period 1900 1996 lutkepohl terasvirta and wolters 1999 apply a nonlinear error correction model with smooth transition adjustment to capture instabilities in the linear cointegration model the long run equilibrium is described by a linear cointegrating relation and the adjustment to this long run equilibrium is nonlinear they analyze german m1 money demand granger and terisvirta 1993 terasvirta 1998 and van dijk terasvirta and franses 2002 provide details on the econometric theory for estimating and testing such nonlinear models

monetary aggregates as indicators of economic activity in canada empirical evidence empirical evidence linking monetary aggregates to variables such as inflation and economic growth has weakened over the past two decades in this study we re examine these relationships by creating composite monetary aggregates that switch among existing monetary aggregates using quarterly data over the sample 1971 99 overall composite monetary aggregates appear to be useful in explaining or forecasting short run movements in gdp growth and inflation also the most successful composite monetary aggregates produce switch dates that overlap with the introduction of financial innovations these subsequently prompted the bank of canada to revise or introduce new monetary aggregates jel classification e51 e52 c52 c53 les agregats monetaires en tant qu indicateurs de l activiteeconomique resultats empiriques les resultats empiriques jaugeant les liens entre les agregats monetaires et des variables telles que l inflation et la croissance economique montrent que ces liens se sont affaiblis au cours des deux dernieres decennies ce memoire examine ces relations en creant des agregats monetaires composites qui se deplacent entre les agregats usuels selon certains criteres statistiques l etude utilise des donnees trimestrielles pour la periode 1971 99 dans l ensemble les agregats monetaires composites semblent plus utiles pour expliquer ou prevoir les mouvements a court terme dans le niveau de croissance du pib et de l inflation de plus les agregats monetaires composites qui ont le plus de succes suggerent des moments de deplacement qui correspondent a des discontinuites marquant la mise en place d innovations financieres celles ci ont entraine la banque du canada a reviser les agregats monetaires usuels ou a en suggerer de nouveaux

optimal prediction of cyclical downturns abstract in the conventional way of visualizing economic time series the prediction problem does not dichotomize into predicting turning points and predicting conditional means yet the prediction of turning points has always been considered a separate issue in business cycle literature the paper first discusses these issues and then describes a model where the prediction of turning points does separate from the prediction of conditional means using the model an optimal way of predicting turning points is derived and applied to u s data the paper uses time series methodology and the theory of optimal stopping times

inventory investment and sectoral characteristics in some oecd countries this paper discusses the effects of sectoral structure on the long run macroeconomic inventory behaviour of national economies data on 15 oecd countries are included in the analysis which is based on correlation and cluster analysis methodologies the study is part of a long term research project exploring factors influencing the inventory behaviour of national economies first we introduce some basic characteristics of macroeconomic inventory formation in the 15 oecd countries we argue that our previous results on the existence of specific characteristic features of macroeconomic inventory investment are justified hence it makes sense to study the factors influencing these features we then examine the contribution of various sectors to the production of in the countries involved and the relationship between sectoral structure and inventory intensity annual inventory change gross value added we find that the high share of agriculture and manufacturing increases inventory intensity that the increasing share of services has a negative effect and that the role of construction and trade is not obvious the relatively low stability of the statistical results warns us to be cautious with our judgements further case by case analysis would be required to obtain more solid results

automatic cost optimal power balance control the article presents application of evolutionary algorithm for cost optimal dispatch of ancillary services in power transmission system of the czech republic the problem is formulated as a nonlinear optimization problem taking into account both continuous and discrete control variables the optimal setting of control variables such as schedule for activation of regulation reserves which minimizes the regulation energy costs while maintaining required control performance are determined via evolution algorithm the proposed control scheme is tested on historical data from the transmission system operator

the demand for money in the united states evidence from cointegration tests this paper uses recent cointegration test procedures to investigate the underlying economic relationship between real money balances real income and interest rates for the united states unlike recent studies of money demand the authors analysis uses quarterly data spanning the period 1915 88 thus providing a sample encompassing a wide variety of economic experiences the evidence presented indicates that the broader m2 measure of money is the preferable measure with which to consider the long run effects of monetary policy copyright 1991 by ohio state university press

money inflation and output under fiat and commodity standards we examine the behavior of money inflation and output under fiat and commodity standards to better understand how changes in monetary policy affect economic activity using long term historical data for 15 countries we find that under fiat standards the growth rates of various monetary aggregates are more highly correlated with inflation and with each other than under commodity standards money growth inflation and output growth are also higher in contrast we do not find that money growth is more highly correlated with output growth under one standard than under the other

how the european central bank decided its early monetary policy the main goal of this paper is to detect the mechanisms that should rationally stimulate the decision making policies of the european central bank ecb this is carried out under the framework of theoretical principles of interest rate rules firstly we deduce a set of logically advisable guidelines for the strategy actually developed by this central bank then we contrast a wide set of hypotheses with reference to those variables the ecb takes into account on deciding its monetary policy with a flexible treatment regarding the number of months of advance or delay in the explanatory variables the results lead us to the conclusion that the ecb besides adopting a smooth strategy especially bears in mind the expected core inflation rate with a reaction coefficient adjusted to that initially proposed by taylor the economic growth rate though it has a significant positive coefficient matters relatively little and is backward looking finally we evaluate up to what point the behaviour of the ecb is a

multiperiod auction for a pool based electricity market this paper presents a market clearing tool for the market operator of a pool based electricity market for energy this tool is transparent and fair for the market participants and simple to implement and to interpret it preserves the privacy of the corporate information of the participants and provides the right signals to achieve economic efficiency furthermore it recognizes and properly models the technical physical and inter temporal constraints of the participant thermal power generators from a mathematical point of view the proposed tool results in a mixed integer linear programming problem that can be efficiently solved using currently available branch and cut software to illustrate the adequate functioning of the proposed market clearing procedure different realistic case studies are analyzed in detail

money growth output growth and inflation a reexamination of the modern quantity theory s linchpin prediction 1 introductionover the years the quantity theory of money has been extended and refined all versions however begin with the well known equation of exchange mv pq where q is the level of national output real gross domestic product gdp p is the general price level v is the velocity of money circulation and m is the quantity of money to convert this equation actually an identity into a theory one of the four variables contained therein must be specified as functionally dependent on the other three monetarists argue that p is the dependent variable sprinkel 1971 specifically they argue that m is determined by the national monetary authority that v is determined by a variety of both secular and cyclical factors 1 that changes in v do not consistently offset changes in m and that q is determined by capital labor and technological advances sprinkel 1971 the monetarist theory of inflation is a long run theory it does not purport to explain short run increases in the general price level hafer and wheelock 2001 monetarists argue that short run inflation stabilization is not feasible and therefore that monetary policy should be confined to inflation concerns over a relatively long horizon 2john moroney 2002 p 399 asserts that in the traditional version of the quantity theory a country s long run inflation rate increases one to one with its money growth rate the modern wrinkle is that inflation is mitigated by real gdp growth emphasis added this assertion is consistent with the famous dictum of milton friedman 1968 p 18 that inflation is always and everywhere a monetary phenomenon produced in the first instance by an unduly rapid growth in the quantity of money emphasis added friedman s assertion is not that an increased money growth rate is the sole cause of inflation in the long run just the most important cause friedman and friedman 1980 an increase in inflation can also be caused by a decrease in the growth rate of q or theoretically even an increase in the growth rate of v as is easily seen by solving the equation of exchange for p and then taking logs and first differences after taking logs and first differences 3 moroney 2002 obtains an estimating equation in which inflation is functionally dependent on the growth rates of the money stock and real gdp formula omitted see article image where y is ln p x is ln m z is ln q and u is a random disturbance term that includes velocity changes is the first difference operator the modern quantity theory s model implied restrictions which are testable predictions are that the intercept is zero the coefficient of the money stock growth rate is plus one and the coefficient of the growth rate of real gdp is minus one arguably this joint hypothesis is the linchpin prediction of the modern quantity theory if the hypothesis is rejected by the data the theory falls using long run 1980 1993 cross section data on 81 countries which he takes from the world bank s world development report 1995 moroney 2002 tests the joint hypothesis 0 0 1 1 2 1 and incorrectly claims that the hypothesis cannot be rejected at even the 0 01 level of significance 4 as will be shown in the next section the joint hypothesis is rejected decisively fortunately however it will also be shown that a modification to moroney s model specification helps to salvage the most substantive part of the modern quantity theory s implied restrictions 2 modification to the quantity theory setupin contrast to the conventional quantity theory setup in which the economy s real activity is determined entirely outside its monetary sector fama 1982 moroney 2002 that is in which no provision is made for the possibility that the monetary authority s actions could have an adverse effect on output5 the present article entertains the possibility that y and z are jointly determined

two illustrations of the quantity theory of money of two central implications of the quantity theory of money that a given change in the rate of change in the quantity of money induces i an equal change in the rate of price inflation and ii an equal change in nominal rates of interest the illustrations were obtained by comparing moving averages of the three variables in question using quarterly u s time series for the period 1953 77 readers may find the results of interest as additional confirmation of the quantity theory as an example of one way in which the quantity theoretic relationships can be uncovered via atheoretical methods from time series which are subject to a variety of other forces or as a measure of the extent to which the inflation and interest rate experience of the postwar period can be understood in terms of purely classical monetary forces the theoretical background of the study is reviewed very briefly as it is familiar material in the next section the data processing methods are described and rationalized in section ii the illustrations

a new empirically weighted monetary aggregate for the united states i introduction this article uses an approach to long run econometric modeling proposed by pesaran et al 2001 hereafter pss to develop an empirically weighted broad monetary aggregate for the united states and to demonstrate the advantages of this type of aggregate from a monetary policy perspective in particular we examine the ability of this type of approach to deal with periods of significant financial innovation and money demand instability a key requirement for monetary aggregates to provide a useful role in guiding monetary policy is that they should be stably related to the objectives of policy such as inflation or nominal income growth in this context the united states has exhibited periodic evidence of significant money demand instability most notably these have been goldfeld s 1976 case of the missing m1 in 1973 74 and the missing m2 episode of the early 1990s feldstein and stock 1996 in both cases the aggregate in question experienced a significant velocity increase and as a consequence previously established and apparently stable money demand relationships began to seriously overpredict the growth in these aggregates the missing m1 episode in 1973 74 together with subsequent evidence that m2 was more predictable than m1 led many economists to use m2 as an indicator of nominal activity hence during the 1980s m2 became the primary intermediate target of monetary policy furthermore the primacy of m2 appeared to be well supported by the available empirical evidence feldstein and stock 1994 for example established that the rate of change of m2 was a statistically significant predictor of the rate of change of nominal gross domestic product gdp over the period 1959 92 furthermore m2 remained statistically significant when short term interest rates were added to the relationship subsequent research such as miyao 1996 and estrella and mishkin 1997 however cast doubt on the robustness of this result carlson et al 2000 p 34 for example summarize the current situation by arguing that the promising empirical conclusions of feldstein and stock 1994 that established predictive content for m2 in a vector error correction setting do not seem to find support in data that extend through the mid 1990s the key factor behind the breakdown in the m2 relation appears to have been the substitution away from time deposits and into mutual funds particularly stock and bond mutual funds in the low interest rate environment of the early 1990s although the definition of m2 has been expanded by the federal reserve in the past to include money market mutual funds mmmfs and money market deposit accounts mmdas for example a number of analysts duca 1995 darin and hetzel 1994 orphanides et al 1994 have advocated that m2 should be expanded further to include these stock and bond mutual funds m2 significantly these studies typically use the simple sum aggregation approach in which all component assets are given equal and constant weights over time this approach does not seem consistent however with the accumulating evidence of a significant shift in wealth holders preferences sometime in the early 1990s carlson et al 2000 for example add to the empirical evidence that had accumulated during the 1990s by suggesting that the instability was associated with a permanent upward shift in m2 velocity between 1990 and 1994 furthermore they argue that our results support the hypothesis that households permanently reallocated a portion of their wealth from time deposits to mutual funds p 381 clearly simple sum aggregation is not able to take account of these changes in preferences more significantly however simple sum aggregation cannot take account of any changes in the relationship between component assets and nominal income over time although carlson et al 2000 do manage to reestablish a stable money demand relationship for the mzm money at zero maturity and m2m m2 minus small time deposits aggregates through the 1990s this is only possible by specifically accounting for the financial innovation that occurred in the early 1990s