ppxscal/embedding_network huggingface dataset:
Offline Simulation of a Managed System for Testing a Developed Management System
Authors: Alexander Eskin, Ariel Joel Frank
Venue: Proceedings of the IEEE International Conference on Software-Science, Technology & Engineering (2003)

Nowadays, there is a growing need for ManagementSystems to manage various autonomous systems. TheseManagement Systems are difficult to test, since theirfunctionality includes exchange of information withvarious devices and applications via the networkcommunication. There is a need for efficient methods ofdevelopment and testing to minimize development timeand cost. The solution suggested in this paper is anOffline Simulation Model, where the simulation and thetested Management System are placed on the samecomputer. This model decouples the testing of thefunctional aspects of the developed Management Systemfrom the testing of the communication aspects. Thismethod saves a great deal of human effort, and thereforereduces development time and cost.
Numerical Entropy Production for Central Schemes
Authors: Gabriella Puppo
Venue: SIAM Journal on Scientific Computing (2003)

In this work a detailed study of the numerical entropy production for both low- and high-order central schemes is carried out. Our data show that entropy production can be used to signal the presence of shocks. Moreover, once shocked cells have been identified, the spurious entropy production occurring in the remaining cells mimics the behavior of the local error, and therefore it can be used as an a posteriori error indicator. Applications to shock tracking and scheme adaptivity are given. We also investigate numerically the entropic properties of third and fourth order Central WENO schemes. To our knowledge, this is the first study of the entropic behavior of such high-order schemes.
Indexing multi-dimensional time-series with support for multiple distance measures
Authors: Michail Vlachos, Marios Hadjieleftheriou, Dimitrios Gunopulos, Eamonn Keogh
Venue: Proceedings of the ninth ACM SIGKDD international conference on Knowledge discovery and data mining (2003)

Although most time-series data mining research has concentrated on providing solutions for a single distance function, in this work we motivate the need for a single index structure that can support multiple distance measures. Our specific area of interest is the efficient retrieval and analysis of trajectory similarities. Trajectory datasets are very common in environmental applications, mobility experiments, video surveillance and are especially important for the discovery of certain biological patterns. Our primary similarity measure is based on the Longest Common Subsequence (LCSS) model, that offers enhanced robustness, particularly for noisy data, which are encountered very often in real world applications. However, our index is able to accommodate other distance measures as well, including the ubiquitous Euclidean distance, and the increasingly popular Dynamic Time Warping (DTW). While other researchers have advocated one or other of these similarity measures, a major contribution of our work is the ability to support all these measures without the need to restructure the index. Our framework guarantees no false dismissals and can also be tailored to provide much faster response time at the expense of slightly reduced precision/recall. The experimental results demonstrate that our index can help speed-up the computation of expensive similarity measures such as the LCSS and the DTW.
A finite state approach to operator classification
Authors: Wilf R. LaLonde
Venue: ACM SIGPLAN Notices (1979)

We consider the problem of uniquely classifying operators in expressions containing binary, prefix unary, and suffix unary operators e.g. binary + (addition), prefix unary ~ (negation), and suffix unary ! (factorial). Since the same name may be used to represent distinct operators in different classes, the problem is one of refinement. In the general case, it can be recast in a grammatical frameword whose solution requires all parse trees of an ambiguous grammar. We consider a much simpler finite state solution. More specifically, we consider an automaton based algorithm which refines the classifications of each operator to a unique class (when it exists) as a function of the allowed classifications of the neighboring operators. We do not consider the more complicated problem where operand types effect the result.
A whole new worldview
Authors: Ubiquity staff
Venue: Ubiquity (2003)

Anthropologist Christopher Kelty on programmers, networks and information technology
Multirate integration in a direct simulation method
Authors: J. T. J. van Eijndhoven, M. T. van Stiphout, H. W. Buurman
Venue: Proceedings of the conference on European design automation (1990)

Multirate integration is a technique in which a set of differential equations is solved with different timesteps assigned to subsets of equations [4][10]. In circuit simulation this is commonly used in the waveform relaxation method, where different subcircuits are analyzed independently from the others. An important and obvious advantage is the simulation efficiency: subcircuits which are temporarily changing relatively slowly, can be analyzed with large stepsizes, independent of the activity in other subcircuits. In this paper an approach is presented to fit multirate integration in a direct simulation scheme, thus bringing comparable advantages without the relaxation process and its related problems. An event driven scheme is proposed for the circuit simulation problem, with individual timesteps for every component in the circuit.Only with the new combination of a highly efficient update scheme for the L/U decomposition, and some event clustering method, leads the multirate scheme to the expected speedup of the simulation process.
Bluetooth Enabled Interaction in a Distributed Camera Surveillance System
Authors: Peter Rigole, Yolande Berbers, Tom Holvoet
Venue: Proceedings of the Proceedings of the 37th Annual Hawaii International Conference on System Sciences (HICSS'04) - Track 9 - Volume 9 (2004)

This paper reports on the challenge to extend an existing distributed camera surveillance security application with Bluetooth driven wireless communication using handheld PC's. The main focus is on the engineering aspect of the development of BlueGuard. The paper gives an in-depth assessment of the chosen open software used and the choices made, on how Bluetooth support was designed in the BlueGuard application, and on how was coped with the technical dif.culties encountered while implementing spontaneous ad hoc connections between handheld and PC by wireless PANs. Several new software components of BlueGuard are designed in such a way that they can be re-used in other applications for setting up ad hoc connections over IP.The distributed camera surveillance security application was built using the SEESCOA (Software Engineering for Embedded Systems using a Component Oriented Approach) component-oriented methodology and is an example of re-use and modularity.
Should potential loop optimizations influence inlining decisions?
Authors: Christopher Barton, José Nelson Amaral, Bob Blainey
Venue: Proceedings of the 2003 conference of the Centre for Advanced Studies on Collaborative research (2003)

Inlining decisions are made based on the frequency of the function call, on the size of the caller and callee, on the nesting level of the function call in the call graph, and on the programmer's directives. In intraprocedural code optimization, loop fusion has proven to be advantageous when it results in improved data reuse, instruction scheduling, and register allocation. We want to study the opportunity to improve the performance of programs when the potential for additional loop fusion is taken into consideration in the inlining decisions. In this paper we present the results of our first evaluation experiments: we changed the inlining decisions in the IBM®XL Compile Suite to inline liberally and measured how many additional loops we were able to fuse in the SPECint2000 and SPECfp2000 benchmark suites. The idea is that if liberal inlining does not result in significant additional loop fusion for a given set of benchmarks, there will be little hope for interprocedural loop fusion in that set. Our preliminary results indicate that existing inlining heuristics uncover almost all interprocedural loop fusion opportunities in the SPEC benchmark suite.
Revealing Class Structure with Concept Lattices
Authors: Uri Dekel, Yossi Gil
Venue: Proceedings of the 10th Working Conference on Reverse Engineering (2003)

This paper promotes the use of a mathematical conceptlattice based upon the binary relation of accesses betweenmethods and fields as a novel visualization of individualJAVA classes. We demonstrate in a detailed real-lifecase study that such a lattice is valuable for reverse-engineeringpurposes, in that it helps reason about the interfaceand structure of the class and find errors in the absenceof source code. Our technique can also serve as aheuristic for automatic feature categorization, enabling itto assist efforts of re-documentation.
On a statistical method to detect discontinuity in the distribution function of reported earnings
Authors: Yoshiyuki Takeuchi
Venue: Mathematics and Computers in Simulation (2004)

In the study of earnings management, researchers attempt to know the reason managers manipulate earnings of a company. Some preceding studies have focused on the distribution of reported earnings, and they treat the evidence of manipulation on earnings as discontinuity (at most cases around zero earnings) in the distribution function of reported earnings. They used statistical tests to detect the discontinuity, though, none of the tests they proposed were shown their derivation and examined their properties. This study tries to find a proper procedure for such kinds of study. In this study, we focus on the test proposed by Burgstahler and Dichev among tests. From the results by Monte Carlo simulation, for over moderate sample size, the size of the test is almost correct and the test has good power. In addition, we find that the test is able to detect discontinuity for a small jump in continuous distribution. Thus, we conclude that the test is available for various situations.
A paradigm shift: alternative interaction techniques for use with mobile & wearable devices
Authors: Joanna Lumsden, Stephen Brewster
Venue: Proceedings of the 2003 conference of the Centre for Advanced Studies on Collaborative research (2003)

Desktop user interface design originates from the fact that users are stationary and can devote all of their visual resource to the application with which they are interacting. In contrast, users of mobile and wearable devices are typically in motion whilst using their device which means that they cannot devote all or any of their visual resource to interaction with the mobile application -- it must remain with the primary task, often for safety reasons. Additionally, such devices have limited screen real estate and traditional input and output capabilities are generally restricted. Consequently, if we are to develop effective applications for use on mobile or wearable technology, we must embrace a paradigm shift with respect to the interaction techniques we employ for communication with such devices.This paper discusses why it is necessary to embrace a paradigm shift in terms of interaction techniques for mobile technology and presents two novel multimodal interaction techniques which are effective alternatives to traditional, visual-centric interface designs on mobile devices as empirical examples of the potential to achieve this shift.
Training secondary school computer science educators
Authors: Joyce Statz
Venue: ACM SIGCUE Outlook (1975)

With the increasing use of computers in many areas of society, there is a growing need for competent computer science educators at all levels of education. The need at the secondary school level is a most pressing one at the moment, one which might be met by the preparation of computer science majors in university colleges of education. A program at Bowling Green State University is described in this paper, a program which combines a broad computer science background with teaching experiences and education courses.
An architecture and communication protocol for IPv6 pack-based picocellular networks
Authors: Han-Chieh Chao, Yen-Ming Chu
Venue: Mobile Networks and Applications (2003)

In this paper, micro mobility problems in handoff binding latency in Mobile IPv6 and the enhanced Cellular Mobile IPv6 (CMIv6) are investigated using a new extension protocol. Frequent and fast movements usually characterize micro mobility. An enhanced handoff extension is adopted to solve the Mobile IPv6 handoff break in a micro mobility environment. The basic idea involves using the new field in the IPv6 header, "flow label", to assist the foreign router delivering packets to the mobile node. The Foreign Home Agent (FHA) is a new defined node in this proposition. FHA can accurately deliver packets according to the mobile node IP address even though the new binding messages have not arrived at the CN. The simulations shown in this paper prove that the enhanced CMIv6 scheme can minimize packet loss during handoffs.
Topology, Search, and Fault Tolerance in Unstructured P2P Networks
Authors: Kedar Samant, Siddhartha Bhattacharyya
Venue: Proceedings of the Proceedings of the 37th Annual Hawaii International Conference on System Sciences (HICSS'04) - Track 9 - Volume 9 (2004)

While P2P networks are currently being used mainly for sharing and swapping of music and video media files, many commercial applications of P2P networks for content provision and digital goods distribution are envisioned. However, such commercial use of P2P networks for content provision requires a high level of accessibility of resources. Failures in individual nodes can have a drastic affect on accessibility. This paper examines the impact of node failure on the accessibility of resources on P2P networks. Using an agent-based model of P2P networks, we investigate how network topology, search effort and resource redundancy affect accessibility under varying levels of node failure.
Character N-Gram Tokenization for European Language Text Retrieval
Authors: Paul Mcnamee, James Mayfield
Venue: Information Retrieval (2004)

The Cross-Language Evaluation Forum has encouraged research in text retrieval methods for numerous European languages and has developed durable test suites that allow language-specific techniques to be investigated and compared. The labor associated with crafting a retrieval system that takes advantage of sophisticated linguistic methods is daunting. We examine whether language-neutral methods can achieve accuracy comparable to language-specific methods with less concomitant software complexity. Using the CLEF 2002 test set we demonstrate empirically how overlapping character n-gram tokenization can provide retrieval accuracy that rivals the best current language-specific approaches for European languages. We show that n &equals; 4 is a good choice for those languages, and document the increased storage and time requirements of the technique. We report on the benefits of and challenges posed by n-grams, and explain peculiarities attendant to bilingual retrieval. Our findings demonstrate clearly that accuracy using n-gram indexing rivals or exceeds accuracy using unnormalized words, for both monolingual and bilingual retrieval.
A Solution Architecture for Financial Institutions to Handle Illegal Activities: A Neural Networks Approach
Authors: Ashish Vikram, Sivakumar Chennuru, H. R. Rao, Shambhu Upadhyaya
Venue: Proceedings of the Proceedings of the 37th Annual Hawaii International Conference on System Sciences (HICSS'04) - Track 7 - Volume 7 (2004)

The banking and financial services industry today relies heavily on the use of networked computerized data systems to manage financial accounts and information on a real-time basis for millions of customers. This underlying technology is a source of a large quantity of information that can be used in the identification and prevention of financial fraud involving the illegal/unauthorized transfer of funds by entities external and internal to the victim financial institution. This paper develops a concept involving the use of neural networks to correlateinformation from a variety of technological and database sources to identify suspicious account activity.
Designing emotionally evocative homepages: an empirical study of the quantitative relations between design factors and emotional dimensions
Authors: Jinwoo Kim, Jooeun Lee, Dongseong Choi
Venue: International Journal of Human-Computer Studies (2003)

Emotional aspects of homepages are becoming more important as people spend more time in cyberspace. This research aims to identify quantitative relationships between key design factors and generic dimensions of secondary emotions so that we may develop homepages which target emotions more effectively. In order to achieve this goal, we conducted three related studies. In the first study, we identified 13 generic dimensions of secondary emotions that people usually feel when viewing diverse homepages. In the second study, we identified key design factors that professional designers frequently use in their attempts to develop emotionally evocative homepages. Finally, in the third study, we identified quantitative relationships between the key design factors and the 13 emotional dimensions. This paper describes these three studies and concludes with the implications and limitations of the study results.
Distributed multivariate regression based on influential observations
Authors: Hang Yu, Ee-Chien Chang
Venue: Proceedings of the ninth ACM SIGKDD international conference on Knowledge discovery and data mining (2003)

Large-scale data sets are sometimes logically and physically distributed in separate databases. The issues of mining these data sets are not just their sizes, but also the distributed nature. The complication is that communicating all the data to a central database would be too slow. To reduce communication costs, one could compress the data during transmission. Another method is random sampling. We propose an approach for distributed multivariate regression based on sampling and discuss its relationship with the compression method. The central idea is motivated by the observation that, although communication is limited, each individual site can still scan and process all the data it holds. Thus it is possible for the site to communicate only influential samples without seeing data in other sites. We exploit this observation and derive a method that provides tradeoff between communication cost and accuracy. Experimental results show that it is better than the compression method and random sampling.
The impact of graphics calculator on mathematics education in Asia
Authors: Che-Yin Suen
Venue: Proceedings of the international conference on Computational methods in sciences and engineering (2003)

It seems that the situation will not be improved much in the near future. The educators in Asia hence introduced Graphics Calculator. Graphics Calculator may not be as powerful as computer software in some aspects. However, it has the following advantages: 1. It can be used in teaching and exploring effectively, 2. It is affordable to most of the Asian students, 3. It has small size and light weight which enable it to be carried around easily, 4. It can be used in examination and other assessment environment while personal computer cannot be used for these purposes.
Assessment of the impacts of e-commerce technologies on overall business processes: an analytic delphi process
Authors: Dundar Kocaoglu
Venue:  (2002)

The Internet has dramatically changed our lives and the way we do business. With the innovation of e-commerce companies can reach customers and sell products almost instantaneously. As an outcome, e-commerce has grown tremendously and the rapid changes taking place in information technology in conjunction with the dynamic nature of the market provide rich opportunities for research. This research assesses emerging e-commerce technologies and the impact of these technologies on overall business processes. The methodology utilized is an analytic Delphi study where experts assessed the adoption of e-commerce technologies and the impacts of these technologies on overall business processes. Delphi offered a mechanism to make these assessments via a panel of experts and was the chosen methodology because the Internet is a relatively new technology and thus, sufficient historical data were not available to effectively utilize other traditional forecasting methodologies. Once the initial e-commerce technologies were identified via traditional Delphi, the Analytic Hierarchy Process was used to quantify experts' judgments. The research methodology required a team of twelve e-commerce experts to respond to three sets of research instruments. The experts for this study were chosen based on their: (1) knowledge of emerging technologies, (2) existing usage of e-commerce, (3) development of e-commerce technologies, and (4) understanding of existing business processes across functional groups. The results of the research were that experts identified seven major e-commerce technologies that are currently in use and will continue to be in use in their forecasting time horizon of two years: (1) Email, (2) ECRM Tools, (3) E-Teleconferencing, (4) B2C Tools, (5) B2B Tools, (6) M-Commerce, and (7) Streaming Video. Experts also identified eight major business change agents based on the adoption of these e-commerce technologies: (1) Improved Communication, (2) Improved Product Development, (3) Increased Overall Efficiency, (4) Decreased Face-to-Face Interaction, (5) Increased 240 Work, (6) Decreased Overall Costs, (7) Decreased Inventory, and (8) Increased Telecommuting. The experts identified email as the most significant technology to impact overall business processes followed by ECRM tools. According to the panel, the major areas through which these technologies impacted overall business processes were improved communication and product development.
Investigating Technical Trouble Tickets: An Analysis of a Homely CMC Genre
Authors: David W. Marlow
Venue: Proceedings of the Proceedings of the 37th Annual Hawaii International Conference on System Sciences (HICSS'04) - Track 4 - Volume 4 (2004)

CMC has long been recognized as blurring the distinction between written and oral modes of communication. Analysis of genre has traditionally focused on either the structure of the text or an ethnographic description. This study suggests a new approach for investigating organizational genre by combing ethnographic methodology and corpus analysis techniquesto examine a previously unexplored genre: the technical trouble ticket. This yields a richer analysis and illuminates not only what happens in trouble ticket discourse, but also how and why. Particular attention is paid to the relative orality of this homely CMC genre.
Two Workload Properties for Brownian Networks
Authors: M. Bramson, R. J. Williams
Venue: Queueing Systems: Theory and Applications (2003)

As one approach to dynamic scheduling problems for open stochastic processing networks, J.M. Harrison has proposed the use of formal heavy traffic approximations known as Brownian networks. A key step in this approach is a reduction in dimension of a Brownian network, due to Harrison and Van Mieghem [21], in which the &ldquo;queue length&rdquo; process is replaced by a &ldquo;workload&rdquo; process. In this paper, we establish two properties of these workload processes. Firstly, we derive a formula for the dimension of such processes. For a given Brownian network, this dimension is unique. However, there are infinitely many possible choices for the workload process. Harrison [16] has proposed a &ldquo;canonical&rdquo; choice, which reduces the possibilities to a finite number. Our second result provides sufficient conditions for this canonical choice to be valid and for it to yield a non-negative workload process. The assumptions and proofs for our results involve only first-order model parameters.