ppxscal/embedding_network huggingface dataset:
Self-selection, slipping, salvaging, slacking, and stoning: the impacts of negative feedback at eBay
Authors: Tapan Khopkar, Xin Li, Paul Resnick
Venue: Proceedings of the 6th ACM conference on Electronic commerce (2005)

Analysis of usage history for a large panel of eBay sellers suggests that both seller and buyer behavior change in response to changes in a seller's feedback profile. Sellers are more likely to stop listing items right after receiving a negative feedback. Sellers who continue listing do not seem to improve their performance in order to salvage their reputations. Instead, sellers get more negative feedback after receiving a negative feedback. One reason is that observed negative feedback appears to be symptomatic of a temporary decline in the seller's quality, which is also reflected in other transactions around the same time. Receipt of negative feedback might also cause a decline in seller quality, but we find only weak evidence of that. Empirical evidence does support a second hypothesis, that buyers appear to be more willing to give negative feedback to sellers who have recently received other negative feedback.
Hardware implementation of hierarchical FSMs
Authors: Valery Sklyarov
Venue: Proceedings of the 4th international symposium on Information and communication technologies (2005)

The paper describes a simple method for implementing recursion in hardware based on the model of a hierarchical finite state machine. Two types of synthesizable specification for such model have been proposed, namely Handel-C and VHDL. The practicability of the approach is demonstrated through examples.
GeLexi project: sentence parsing based on a GEnerative LEXIcon
Authors: Gábor Alberti Judit Kleiber Anita Viszket
Venue: Acta Cybernetica (2004)

The principal aim of our research team, called GeLexi, is to legitimate a new sort of generative grammar via verifying its computational implementability. This grammar is more radically "lexicalist" than any earlier one: no phrase structure trees are generated, but word order is accounted for by means of ranked parameters. Another novelty is the extension of "total lexicalism" to morphology: lexical items are assigned not to words but to morphemes. Our parser, in accordance with the basic task of every generative grammar, decides whether a sentence is grammatical, and if it is, then provides a morphophonological analysis, a compilation of grammatical relations, and two kinds of semantic representations. At the end we show some examples to demonstrate our procedures, among them a sentence containing the conjunction és 'and', which is our latest development.
The INFN-grid testbed
Authors: R. Alfieri, R. Barbera, P. Belluomo, A. Cavalli, R. Cecchini, A. Chierici, V. Ciaschini, L. Dell'Agnello, F. Donno, E. Ferro, A. Forte, L. Gaido, A. Ghiselli, A. Gianoli, A. Italiano, S. Lusso, M. Luvisetto, P. Mastroserio, M. Mazzucato, D. Mura, M. Reale, L. Salconi, G. Sava, M. Serra, F. Spataro, F. Taurino, G. Tortone, L. Vaccarossa, M. Verlato, G. Vita Finzi
Venue: Future Generation Computer Systems (2005)

The Italian INFN-Grid Project is committed to set-up, run and manage an unprecedented nation-wide Grid infrastructure. The implementation and use of this INFN-Grid Testbed is presented and discussed. Particular care and attention are devoted to those activities, relevant for the management of the Testbed, carried out by the INFN within international Grid Projects.
Hierarchical Dynamics, Interarrival Times, and Performance
Authors: Stephen D. Kleban, Scott H. Clearwater
Venue: Proceedings of the 2003 ACM/IEEE conference on Supercomputing (2003)

We report on a model of the distribution of job submission interarrival times in supercomputers.Interarrival times are modeled as a consequence of a complicated set of decisions between users, the queuing algorithm, and other policies.This cascading hierarchy of decision-making processes leads to a particular kind of heavy-tailed distribution.Specifically, hierarchically constrained systems suggest that fatter tails are due to more levels coming into play in the overall decision-making process.The key contribution of this paper is that heavier tials resulting from more complex decision-making processes, that ismore hierarchical levels, will lead to overall worse performance, even when the average interarrival time is the same.Finally, we offer some suggestions for how to overcome these issues and the tradeoffs involved.
Web page marker: a web browsing support system based on marking and anchoring
Authors: Takahiro Koga, Noriharu Tashiro, Tadachika Ozono, Takayuki Ito, Toramatsu Shintani
Venue: Special interest tracks and posters of the 14th international conference on World Wide Web (2005)

In this paper, we propose a web browsing support system, called WPM, which provides marking and anchoring functions on ordinary web browsers. WPM users can mark words and phrases on web pages by using their browsers without any extra plug-ins like similar systems, and can anchor words to refer them later. WPM makes it possible to carry out marking to the existing Web page so that marking carried out to paper. By changing character decoration partially, the text is indicated by emphasis and improve readability. WPM is implemented using proxy agent. This system can be used in everyday browsing, without a user being conscious of a system by using a proxy.
TITAN: on-demand topology management in ad hoc networks
Authors: Cigdem Sengul, Robin Kravets
Venue: ACM SIGMOBILE Mobile Computing and Communications Review (2005)

An ad hoc network is a multi-hop wireless network that is established by a group of mobile nodes without depending on any infrastructure. Due to the disconnected nature of such mobile nodes, a fundamental problem in ad hoc networks is energy-efficient operation to extend the lifetime of the nodes and the network. A promising strategy is to reduce the power consumption of the wireless interface since it is a significant contributer to the overall energy consumption. Essentially, while traffic load defines energy consumption by the wireless interface during active communication [1, 2], idle-time energy dissipation dominates total system energy consumption in the presence of low to moderate traffic [3, 4]. To this end, current approaches allow nodes to switch to a power-save mode where they spend most of their time in a low-power sleep state. However, allowing all nodes to operate in power-save mode imposes additional delay on all communication and can severely limit the capacity of the network as load increases [4]. To compensate for these limitations, some nodes can stay in active mode and serve as stable relays in the network to support low delay and high throughput [3, 4, 5]. Since the choice of nodes that remain active determines both energy consumption and communication quality, the main challenge to any idle-time energy conservation protocol is selecting the set of active nodes through which all traffic flows.
Multitasking Web Search on Vivisimo.com
Authors: Amanda Spink, Sherry Koshman, Minsoo Park, Chris Field, Bernard J. Jansen
Venue: Proceedings of the International Conference on Information Technology: Coding and Computing (ITCC'05) - Volume II - Volume 02 (2005)

A user's single session with a Web search engine may consist of seeking information on either single or multiple topics. Most Web search sessions consist of two queries of two words. We present findings from a study of sessions on the Vivisimo Web search engine to examine the degree of multitasking search by typical web searchers. Findings show that 11.1% of search sessions were multitasking searches, and there are a broad variety of search topics in multitasking search sessions. The paper proposes that on various levels, Web search can be conceptualized at different levels as a multitasking activity. The implications of our findings for Web design and further research are discussed.
RANS and Detached-Eddy Simulation of the NCCR Airfoil
Authors: Eric G. Paterson, Warren J. Baker, Robert F. Kunz, Leonard J. Peltier
Venue: Proceedings of the 2004 Users Group Conference (2004)

A circulation control foil is studied using incompressible Reynolds-averaged Navier Stokes and detached-eddy simulation CFD methods. It is shown that Reynolds-averaged Navier-Stokes simulations of large jet momentum coefficient cases with a linear Reynolds-stress closure anda blended k-¿=k-¿ turbulence model is able to successfully predict the pressure-distribution trends in comparison to benchmark data. Details of the simulated flow are presented through analysis of the integral forces and moment, velocity field, and turbulent kinetic energy. However, given the lack of data and CFD grid studies these results lack validation. Detached-eddy simulation is undertaken for the unblown case, and demonstrates that the method is capable of resolving turbulent vortex shedding. Statistical and spectral analysis is used to explain the simulation results, however, as with the RANS simulations, lack of data precludes validation for this problem. Nonetheless, results are encouraging and suggest further application of DES to both circulation control studies as well as other trailing-edge applications. Finally, implications for cavitation-free operation of circulation-control devices are discussed.
Coming of Age in Computing
Authors: James B. M. Schick
Venue: Social Science Computer Review (2005)

Historians, arguably, have been most reluctant to adopt the computer for teaching and not particularly enthusiastic about its applicability to their research. This article introduces a collection of surveys of ways historians have used computers across the globe, each with a significant portion devoted to their own practice of history. What follows here details the professional life of one historian who embraced the computer age rather earlier than most, intended mainly to indicate how it has changed what many historians do.
Beyond being in the lab: using multi-agent modeling to isolate competing hypotheses
Authors: Ning Nan, Erik W. Johnston, Judith S. Olson, Nathan Bos
Venue: CHI '05 extended abstracts on Human factors in computing systems (2005)

In studies of virtual teams, it is difficult to determine pure effects of geographic isolation and uneven communication technology. We developed a multi-agent computer model in NetLogo to complement laboratory-based organizational simulations [3]. In the lab, favoritism among collocated team members (collocators) appeared to increase their performance. However, in the computer simulation, when controlled for communication delay, in-group favoritism had a detrimental effect on the performance of collocators. This suggested that the advantage of collocators shown in the lab was due to synchronous communication, not favoritism. The canceling-out effects of in-group bias and communication delay explained why many studies did not see performance difference between collocated and remote team members. The multi-agent modeling in this case proved its value by both clarifying previous laboratory findings and guiding design of future experiments.
Proceedings of the 2004 international symposium on Information and communication technologies
Venue: ACM International Conference Proceeding Series; Vol. 90 (2004)

It gives me great pleasure to welcome you to Las Vegas, Nevada for the 3rd International Symposium on Information and Communication Technologies. The Symposium is organised around two invited workshops comprising in total nine papers. In addition, seventy one stand alone papers were submitted and a total of thirty eight (53%) have been selected for presentation and inclusion in this proceedings.
Active rules for sensor databases
Authors: M. Zoumboulakis, G. Roussos, A. Poulovassilis
Venue: Proceeedings of the 1st international workshop on Data management for sensor networks: in conjunction with VLDB 2004 (2004)

Recent years have witnessed a rapidly growing interest in query processing in sensor and actuator networks. This is mainly due to the increased awareness of query processing as the most appropriate computational paradigm for a wide range of sensor network applications, such as environmental monitoring. In this paper we propose a second database technology, namely active rules, that provides a natural computational paradigm for sensor network applications which require reactive behavior, such as security management and rapid forest fire response. Like query processing, efficient and effective active rule execution mechanisms have to address several technical challenges including language design, data aggregation, data verification, robustness under topology changes, routing, power management and many more. Nonetheless, active rules change the context and the requirements of these issues and hence a new set of solutions is appropriate. To this end, we outline the implications of active rules for sensor networks and contrast these against query processing. We then proceed to discuss work in progress carried out in project Asene that aims to effectively address these issues. Finally, we introduce our architecture for a decentralized event broker based on the publish/subscribe paradigm and our early design of an ECA language for sensor networks.
Large-Scale Quantum-Mechanical Simulations of Nanoscale Devices and New Materials
Authors: J. Bernholc, M. Buongiorno Nardelli, W. Lu, S. Nakhmanson, V. Meunier
Venue: Proceedings of the 2004 Users Group Conference (2004)

Recent advances in theoretical methods and high performance computing allow for reliable first-principles investigations of nanoscale devices and complex materials. Using large scale O(N) real-space-based ab initio calculations, we carried out a theoretical study of carbon nanotube-cluster composites as prototype systems for molecular sensing at the nanoscale. Dramatic changes in the electrical conductance of the composite are predicted when gas molecules are adsorbed onto the metal clusters. The observed sensitivity and selectivity might suggest new avenues for the design and production of nanotube-based molecular sensors. The second part of this article focuses on calculating and predicting the properties of piezoelectrics, and on "designing" new materials with enhanced piezoelectric response. We consider polymers in the polyvinylidene fluoride (PVDF) family and show that our calculations not only reproduce well the existing experimental data, but also provide a much improved understanding of their polar properties, which leads to a "design" of novel polymers with a BN backbone. The new polymers are predicted to have up to 100% better piezoelectric response and an enhanced thermal stability with respect to their PVDF analogs. Since methods for their synthesis are readily available, they offer a promising avenue for improving ferro and piezoelectric devices.
Expressions for Rényi and Shannon entropies for bivariate distributions
Authors: S. Nadarajah, K. Zografos
Venue: Information Sciences&mdash;Informatics and Computer Science: An International Journal (2005)

Exact forms of Rényi and Shannon entropies are determined for 27 continuous bivariate distributions, including the Kotz type distribution, truncated normal distribution, distributions with normal and centered normal conditionals, natural exponential distribution, Freund's exponential distribution, Marshall and Olkin's exponential distribution, exponential mixture distribution, Arnold and Strauss's exponential distribution, McKay's gamma distribution, distribution with gamma conditionals, gamma exponential distribution, Dirichlet distribution, inverted beta distribution, distribution with beta conditionals, beta stacy distribution, Cuadras and Augé's distribution, Farlie Gumbel Morgenstern distribution, logistic distribution, Pearson type VII distribution, Pearson type II distribution, distribution with Cauchy conditionals, bilateral Pareto distribution, Muliere and Scarsini's Pareto distribution, distribution with Pareto conditionals and the distribution with Gumbel conditionals. We believe that the results presented here will serve as an important reference for scientists and engineers in many areas.
The concern manipulation environment
Authors: William Chung, William Harrison, Vincent Kruskal, Harold Ossher, Stanley M. Sutton,  Jr., Peri Tarr, Matthew Chapman, Andrew Clement, Helen Hawkins, Sian January
Venue: Proceedings of the 27th international conference on Software engineering (2005)

No abstract available
Integer linear programming based energy optimization for banked DRAMs
Authors: Ozcan Ozturk, Mahmut Kandemir
Venue: Proceedings of the 15th ACM Great Lakes symposium on VLSI (2005)

Memory system can be a major energy consumer in an embedded architecture. One way of reducing its energy consumption is banking, i.e., dividing available memory space into multiple, equally sized banks and placing an unused (idle) memory bank into a low-power operating mode. Prior work investigated code restructuring and data layout reorganization based approaches for increasing energy benefits that could be obtained from a banked memory architecture. This paper takes a different look at the problem of energy optimization in banked memory systems, and explores two compiler-assisted techniques that can co-exist with code/data transformations: data migration and data compression. The goal of data migration is to cluster data with similar access patterns in the same set of banks, thereby increasing the chances for utilizing low-power operating modes in a more effective manner. Data compression reduces the size of the data used by the application, and thus helps reduce the number of memory banks occupied by data. This in turn allows us place a larger number of banks into the low-power operating modes. We formulate the memory bank management problem as an ILP (integer linear programming) problem, and solve it using a publicly available ILP package.
Displacement structures and fast inversion formulas for confluent polynomial Vandermonde-like matrices
Authors: ZhengHong Yang, LaiSheng Wang, YongJian Hu
Venue: Journal of Computational and Applied Mathematics (2005)

In the present paper confluent polynomial Vandermonde-like matrices with general recurrence structure are introduced. Three kinds of displacement structure equations and two kinds of fast inversion formulas for this class of matrices are derived by using displacement structure matrix method. A relationship between confluent polynomial Vandermonde-like matrices and confluent Cauchy-like matrices is pointed out.
Using Principles of Pervasive Computing to Design M-Commerce Applications
Authors: Stan Kurkovsky
Venue: Proceedings of the International Conference on Information Technology: Coding and Computing (ITCC'05) - Volume II - Volume 02 (2005)

Distinct features of handheld devices, such as their mobility, personalization and location-awareness, engender a new class of consumer-oriented software applications. While simple shopping assistant programs were one of the first to emerge for this class of devices, many modern m-commerce applications become more complex and utilize a wide range of features of pervasive computing. In this paper, we discuss a number of design issues pertinent to the development of these applications including context-awareness, personalization, ubiquitous access, and intelligent interfaces. We applied these and other principles in the design and development of SMMART, an intelligent context-aware framework for delivery of personalized and targeted promotions to the users of mobile devices, which is used as a case study throughout this paper.
Portal of damage: a web-based finite element program for the analysis of framed structures subjected to overloads
Authors: María E. Marante, Lorena Suárez, Adriana Quero, Jorge Redondo, Betsy Vera, Maylett Uzcategui, Sebastián Delgado, Leandro R. León, Luis Núñez, Julio Flórez-López
Venue: Advances in Engineering Software (2005)

This paper describes a web-based finite element program called portal of damage. The purpose of the program is the numerical simulation of reinforced concrete framed structures, typically buildings, under earthquakes or others exceptional overloads. The program has so far only one finite element based on lumped damage mechanics. This is a theory that combines fracture mechanics, damage mechanics and the concept of plastic hinge. In the case of reinforced concrete frames, the main mechanism of deterioration is cracking of concrete. Cracking in a frame element is lumped at the plastic hinges. Cracking evolution in the plastic hinge is assumed to follow a generalized form of the Griffith criterion. The behavior of a plastic hinge with damage is described via the effective stress hypothesis, as used in continuum damage mechanics. The portal that can be accessed using any commercial browser (explorer, netscape, etc.) allows to: (a) Create an account in a server. (b) Make use of a semi-graphic pre-processor to create an input file with a digitalized version of the structure. (c) Run a dynamic finite element program and monitor the state of the process. (d) Download or upload input and output files in text format. (e) Make use of a graphic post-processor.
A New SoC Test Architecture with RF/Wireless Connectivity
Authors: Dan Zhao, Shambhu Upadhyaya, Martin Margala
Venue: Proceedings of the 10th IEEE European Symposium on Test (2005)

When moving into the billion-transistor era, the direct or bus interconnects in conventional SoC test control models are rather restricted in not only system performance, but also signal integrity and transmission with continued scaling of the feature size. Recent advances in silicon integrated circuit technology are making possible tiny low-cost transceivers to be integrated on chip. In this paper, we propose a new distributed multihop wireless test control network based on the recent development in "Radio-on-Chip" technology. Under the multilevel tree structure, the system optimization is performed on control constrained resource partitioning and distribution. Several challenging system design issues, such as RF nodes placement, clustering, and routing are studied, with the integrated resource distribution and system optimization on TAM design and test scheduling. Experimental results show that the proposed algorithm can efficiently minimize the overall testing cost.
Musical form and algorithmic solutions
Authors: Peter Copley, Andrew Gartland-Jones
Venue: Proceedings of the 5th conference on Creativity cognition (2005)

In this paper we explore some issues with implementing purely algorithmic solutions to compositional strategies around musical form, and suggest the limits to such approaches. We explore the differences between textbook definitions, of musical form, often modelled by those implementing computational strategies, and what significant composers actually produced. We then suggest the impact this should have in computational approaches to creative composition.
A Recursive Construction For Regular Difference Triangle Sets
Authors: Wensong Chu, Charles J. Colbourn, Solomon W. Golomb
Venue: SIAM Journal on Discrete Mathematics (2005)

A difference triangle set (D$\Delta$S) is a collection of sets of integers having the property that every integer can be written in at most one way as the difference of two elements within a set of the collection. The standard objective is to minimize the largest difference represented, given a specified size of the collection and sizes of the sets that it contains. In order to construct D$\Delta$Ss, we present a new type of combinatorial design, monotonic directed $(v,k,\lambda)$-designs (MDDs). Using MDDs, we give a general recursive construction for difference triangle sets (D$\Delta$Ss). Several instances of this main construction are derived. One of these, the perfect construction, leads to an infinite family of regular (optimal) D$\Delta$Ss if the existence of a single regular D$\Delta$S is known.