ppxscal/embedding_network huggingface dataset:
RealPeer--A Framework for Simulation-Based Development of Peer-to-Peer Systems
Authors: Dieter Hildebrandt, Ludger Bischofs, Wilhelm Hasselbring
Venue: Proceedings of the 15th Euromicro International Conference on Parallel, Distributed and Network-Based Processing (2007)

In the process of developing P2P systems simulation has proved to be an essential tool for the evaluation of existing and conceived P2P systems. So far, in practice there has been a clear separation between a simulation model of a P2P system and a real P2P system that operates on a real physical network. This separation hinders the transition of models to real systems and the evaluation of already deployed systems by means of simulation. This work tries to bridge this gap by proposing a methodology and a framework for the simulation-based development of P2P systems. In our approach, an initial model of a P2P system is iteratively transformed into the intended real P2P system. The presented framework effectively supports a developer in modelling, simulating and ultimately developing P2P systems. We demonstrate the validity of our approach and the framework by constructing an example P2P application. This application is simulated in a series of experiments as well as deployed in a large-scale internet based P2P system.
Student modeling and semi-atutomatic domain ontology construction for SHIECC [atutomatic read automatic]
Authors: S. Labidi
Venue: Proceedings of the 30th Annual Frontiers in Education - Volume 01 (2000)

We are designing and implementing, within the SHIECC Project, a computer supported collaborative learning system applied to courses in engineering and mathematics. We address the problems of student modeling and knowledge domain construction within SHIECC. The proposed models have benefits of treating the specificity of cooperative learning and remedying the limitations of existing models.
A self-organizing defect tolerant SIMD architecture
Authors: Jaidev Patwardhan, Chris Dwyer, Alvin R. Lebeck
Venue: ACM Journal on Emerging Technologies in Computing Systems (JETC) (2007)

The continual decrease in transistor size (through either scaled CMOS or emerging nanotechnologies) promises to usher in an era of tera to peta-scale integration but with increasing defects. Regardless of fabrication methodology (top-down or bottom-up), defect-tolerant architectures are necessary to exploit the full potential of future increased device densities. This article explores a defect-tolerant SIMD architecture (SOSA) that self-organizes a large number of limited capability nodes with high defect rates into SIMD processing elements. Simulation results show that SOSA matches or exceeds the performance of conventional systems for moderate to large problems, but with lower power density.
A broad-based, privately-funded program to enhance engineering education
Authors: A. W. Bennett
Venue: Proceedings of the 28th Annual Frontiers in Education - Volume 03 (1998)

This paper provides an overview of a program to enhance the teaching, research and outreach missions of the College of Engineering at Mississippi State University, USA. In 1997, the Robert M. Hearin Foundation of Jackson, MS awarded the College of Engineering $4.6 million over a period of four years to strengthen existing programs and for new initiatives. The new initiatives are consistent with recent studies on the future directions of engineering education by such organizations as NSF, NRC, ASEE and ABET. The distinguishing characteristic of the MSU program compared to the NSF Engineering Education Coalitions is its broad-based nature. Rather than initiatives in selected areas, or in undergraduate studies only, the Hearin grant provides the means by which the college can link undergraduate education to graduate education, research and outreach, including economic development. The paper provides background information on proposal preparation, the interaction with the Hearin Foundation, procedures for implementation and future plans for the project.
Implementation and comparison of three architectures for gesture recognition
Authors: A. Corradini
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 2000. on IEEE International Conference - Volume 04 (2000)

Several systems for automatic gesture recognition have been developed using different strategies and approaches. In these systems the recognition engine is mainly based on three algorithms: dynamic pattern matching, statistical classification, and neural networks (NN). In this paper three architectures for the recognition of dynamic gestures using the above mentioned techniques or a hybrid combination of them are presented and compared. For all architectures a common preprocessor receives as input a sequence of color images, and produces as output a sequence of feature vectors of continuous parameters. The first two systems are hybrid architectures consisting of a combination of neural networks and hidden Markov models (HMM). NNs are used for the classification of single feature vectors while HMMs for the modeling of sequences of them with the aim to exploit the properties of both these tools. More precisely, in the first system a Kohonen feature map (SOM) clusters the input space. Further, each code-book is transformed into a symbol from a discrete alphabet and fed into a discrete HMM for classification. In the second approach a radial basis function (RBF) network is directly used to compute the HMM state observation probabilities. In the last system only dynamic programming techniques are employed. An input sequence of feature vectors is matched by some predefined templates by using the dynamic time warping (DTW) algorithm. Preliminary experiments with our baseline systems achieved a recognition accuracy up to 92%. All systems use input from a monocular color video camera, are user-independent but so far, they are not yet real-time.
Trust Management in Distributed Systems
Authors: Huaizhi Li, Mukesh Singhal
Venue: Computer (2007)

Distributed systems such as the Internet, peer-to-peer networks, and mobile ad hoc networks involve numerous entities, many of which haven't previously interacted. Trust management can help minimize risk and ensure the network activity of benign entities in distributed systems.
A digital chip for robust speech recognition in noisy environment
Authors: Chang-Min Kim
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 200. on IEEE International Conference - Volume 02 (2001)

A digital chip has been developed for isolated word recognition in real-world noisy environments. By carefully comparing recognition performance and hardware implementability a modified-ZCPA model and RBF neural network model are selected for the feature extractor and classifier, respectively. The modified-ZCPA model is based on the feature extraction mechanism of the human auditory system, and demonstrated superiority for noisy speech. The RBF network has excellent OOV (out-of-vocabulary) rejection capability as well as good recognition performance. Both the feature extractor and classifier are implemented by repetition of simple operations, which result in reduction of memory operations for the full use of memory bandwidth. The chip is custom designed at logic level without any DSP core, and implemented with an FPGA with 12 MHz clock speed.
Reconfigurable microprocessors: instruction set selection, code optimization, and configuration control
Authors: John K. Antonio, Monte P. Tull
Venue:  (2007)

Abstract not available.
The impact of turbulence on the effectiveness and efficiency of software development teams in small organizations: Research Sections
Authors: Levent Yilmaz, Jared Phillips
Venue: Software Process: Improvement and Practice (2007)

This article presents an agent-based simulation study that explores the effects of team behavior on the efficiency and effectiveness of software development organizations that pursue incremental and iterative processes such as the Rational Unified Process (RUP). The conceptual model underlying the simulation framework is based on the fundamental tenets of organization theory. We present the simulation framework Team-RUP and use it to examine (a) which team archetypes and associated organizational cooperation mechanisms are effective in incremental and iterative software development strategies such as the RUP and (b) the extent of the impact of turbulence (i.e. change in requirements and employee turnover) on the effectiveness of software development under various team archetypes in small organizations. Using the model, we observe that &lsquo;agility&rsquo; via incremental and iterative development strategy is a valid and useful counterbalance to the inevitable change involved in most software projects. Also, we observe that the autonomous and concurrent team archetypes are better suited for large, rather than small, enterprises. We believe that the findings reported in this study form the basis for future hypotheses that will facilitate further empirical studies on software team behavior. Copyright &copy; 2007 John Wiley & Sons, Ltd.
Effective video capture techniques for educational multimedia
Authors: L. A. Jensen-Link, C. Thompson
Venue: Proceedings of the Frontiers in Education Conference on 1995. Proceedings., 1995 vol 1. - Volume 01 (1995)

The introduction of digital media into educational software design is both a blessing and a challenge to designers of these programs. The effective use of video in computer based instruction provides a method of engaging the learner using moving visual images, narration, music, and sound effects. The challenge lies in effectively capturing high quality video and audio without consuming a large amount of hard drive space and valuable time. Existing video capture software provides the multimedia designer with the tools for creating effective video clips, if one knows how to use them properly. The paper presents a simple and effective process for creating digital movies suitable for educational use. Numerous parameters can serve to improve or harm the quality of the video. The paper addresses those parameters, and how to manipulate them in order to get the most out the capturing process. Most of the information presented is in reference to Mac based production. Specifically discussed are the following: optimal software compression schemes and what settings to choose for various video types; optimal hard drive configurations; capturing strategies; post capture processing to improve disk storage requirements and picture quality; and finally, a few cross platform issues. The step by step process presented will provide educators with the tools needed to create high quality digital video clips for their instructional designs.
A lesson in valves and fittings
Authors: J. Krishnagopalan
Venue: Proceedings of the 26th Annual Frontiers in Education - Volume 01 (1996)

A multimedia engineering education module on "valves and fittings" is presented. The module is arranged to present to the students several chapters in the form of hot buttons which are arranged in the introductory screen. Each button leads the viewer to the contents of that particular chapter. After a chapter is viewed, one returns to the introductory screen and can continue to the other chapters or exit from the lesson. This module demonstrates the level of courseware modules that can be created with off the shelf software products. Most effort involved in the development of courseware modules is in the generation of the appropriate media components. If a kiosk style presentation of the information is acceptable, then the courseware module can be easily assembled using a package such as Authorware. These module also demonstrates how the full range of media can be used to deliver important engineering concepts to students. Multimedia courseware that mirrors information presented in class provides the student with an effective median between self study and one-on-one access to the instructor.
The meaning of silence
Authors: Richard Ennals
Venue: AI Society (2007)

Silence resides in the gaps between the known islands of explicit knowledge. Rather than expecting to build systems with complete information, we take a human-centred approach. Individual citizens need to be active, engage in dialogue and be aware of the importance of tacit knowledge. As societies, we recognise the incompleteness and inconsistency of our discourse.
A General Inside-Out Routing Algorithm for a Class of Rearrangeable Networks
Authors: Seung-Woo Seo, Tse-yun Feng
Venue: Proceedings of the 1994 International Conference on Parallel Processing - Volume 01 (1994)

In this paper, we present a generalized version of the routing algorithm[1] for a class of 2log_2 N-stage networks which are made by concatenating two log_2 Nstage blocking networks. We show that the generalized algorithm can also cover a class of(2log_2 N - 1)-stage networks. It is shown that the inside-out algorithm is a more general algorithm which covers a large class of inherently symmetric rearrangeable networks, including the Benes and its equivalent networks. Moreover, it is shown that the time complexity of the algorithm is in O(N), which is superior to that of the looping algorithm. The algorithm is discussed using a graph representation of the network and its connectivity properties are shown by a graph describing rule. To show that the algorithm covers a class of 2log_2 N-stage networks, we introduce the concept of a base-network. These base-networks satisfy some common connectivity properties, and we show that any concatenation of two base-networks can be routed by our new algorithm.
Deforming surface simplification based on dynamic geometry sampling
Authors: Frederic Payan, Stefanie Hahmann, Georges-Pierre Bonneau
Venue: Proceedings of the IEEE International Conference on Shape Modeling and Applications 2007 (2007)

Although deforming surfaces are frequently used in numerous domains (scientific applications, games...), only few works have been proposed until now for simplifying such data. However, these time-varying surfaces are generally represented as oversampled triangular meshes with a static connectivity, involving a large number of unnecessary details for some frames. Among the related works, some methods provide globally good results, but fine details appearing during the animation are not always well-preserved, because of a static geometry sampling. We propose a new simplification method for deforming surfaces based on a dynamic geometry sampling. The idea is to compute one coarse version at the first frame, and then to progressively update the coarse sampling for the subsequent frames. In order to optimally approximate each frame, vertices are added or removed following the appearance or disappearance of fine details in the frames. Our approach is fast, easy to implement, and produces good quality time-varying approximations with well-preserved fine details, at any given frame.
Simulation-Based Performance Evaluation of Mobile Ad Hoc Routing Protocols in a Swarm of Unmanned Aerial Vehicles
Authors: M. T. Hyland B. E. Mullins, R. O. Baldwin, M. A. Temple
Venue: Proceedings of the 21st International Conference on Advanced Information Networking and Applications Workshops - Volume 02 (2007)

This paper evaluates the performance of several ad hoc routing protocols in the context of a swarm of autonomous unmanned aerial vehicles (UAVs). It has been proposed that a wireless network where nodes have on average 5.1774 log n neighbors, where n is the total number of network nodes, has a high probability of having no partitions. By decreasing transmission range and implementing multi-hop routing between nodes, while ensuring network connectivity is maintained, spatial multiplexing of the wireless channel is exploited. The proposed process is evaluated using the OPNET network simulation tool for the Greedy Perimeter Stateless Routing (GPSR), Optimized Link State Routing (OLSR), and Ad hoc On-demand Distance Vector (AODV) routing protocols in the context of a swarm of UAVs.
Extracting Logic Circuit Structure from Conjunctive Normal Form Descriptions
Authors: Zhaohui Fu, Sharad Malik
Venue: Proceedings of the 20th International Conference on VLSI Design held jointly with 6th International Conference: Embedded Systems (2007)

Boolean Satisfiability is seeing increasing use as a decision procedure in Electronic Design Automation (EDA) and other domains. Most applications encode their domain specific constraints in Conjunctive Normal Form (CNF), which is accepted as input by most efficient contemporary SAT solvers [1.3]. However, such translation may have information loss. For example, when a circuit is encoded into CNF, structural information such as gate orientation, logic paths, signal observability, etc. is lost. However, recent research [4.6] shows that a substantial amount of the lost information can be restored in circuit form. This paper presents an efficient algorithm (CNF2CKT) for extracting circuit information from CNF instances. CNF2CKT is optimal in the sense that it extracts a maximum acyclic combinational circuit from any given CNF using the logic gates pre-specified in a library. The extracted circuit structure is valuable in various ways, particularly when the CNF is not encoded from the circuit, or the circuit description is not readily available. As an example, we show that the extracted circuit structure can be used to derive Circuit Observability Don't Cares [7] for speeding up CNF-SAT [8].
An elastic partial shape matching technique
Authors: Longin Jan Latecki, Vasileios Megalooikonomou, Qiang Wang, Deguang Yu
Venue: Pattern Recognition (2007)

We consider the problem of partial shape matching. We propose to transform shapes into sequences and utilize an algorithm that determines a subsequence of a target sequence that best matches a query. In the proposed algorithm we map the problem of the best matching subsequence to the problem of a cheapest path in a directed acyclic graph (DAG). The approach allows us to compute the optimal scale and translation of sequence values, which is a nontrivial problem in the case of subsequence matching. Our experimental results demonstrate that the proposed algorithm outperforms the commonly used techniques in retrieval accuracy.
A Low Power Adaptive Mac Protocol for Infrastructure Wireless LANS
Authors: Petros Nicopolitidis, Georgios I. Papadimitriou, T. D. Lagkas, Andreas S. Pomportsis
Venue: Proceedings of the Third International Conference on Networking and Services (2007)

This paper proposes a Low Power Adaptive Polling (LPOAP) MAC protocol for infrastructure Wireless LANs (WLANs) which is capable of operating efficiently under bursty traffic conditions. The protocol utilizes a Learning Automaton at the Access Point of the WLAN. The Automaton utilizes network feedback to select the mobile station that will be granted permission to transmit. We implement a low-power option via specifically utilizing a control packet of the proposed protocol to reduce its energy consumption in medium-to high network loads.
Implementing a characterization of genre for automatic genre identification of web pages
Authors: Marina Santini, Richard Power, Roger Evans
Venue: Proceedings of the COLING/ACL on Main conference poster sessions (2006)

In this paper, we propose an implementable characterization of genre suitable for automatic genre identification of web pages. This characterization is implemented as an inferential model based on a modified version of Bayes' theorem. Such a model can deal with genre hybridism and individualization, two important forces behind genre evolution. Results show that this approach is effective and is worth further research.
Is the island model fault tolerant?
Authors: J. Ignacio Hidalgo, Juan Lanchares, Francisco Fernández de Vega, Daniel Lombraña
Venue: Proceedings of the 2007 GECCO conference companion on Genetic and evolutionary computation (2007)

In this paper, we present a study on the fault tolerance nature of the island model when applied to Genetic Algorithms. Parallel and distributed models have been extensively applied to GAs when researchers tackle hard problems. The idea is both to reduce computing time while also improving diversity of populations and therefore quality of solutions. Nevertheless, there are few works dealing with the problem of faults that are usually present when a distributed infrastructure is employed for running the parallel algorithm. This paper studies the behavior of the Island Model when faults appear on a parallel computer or a network of computers. Two benchmark problems have been employed, and good results obtained for each of them allow us to reliably consider Island Model as a fault tolerant parallel algorithm.
Privacy as an operating system service
Authors: Sotiris Ioannidis, Stelios Sidiroglou, Angelos D. Keromytis
Venue: Proceedings of the 1st USENIX Workshop on Hot Topics in Security (2006)

The issue of electronic privacy has of late attracted considerable attention. The proliferation of Internet services and, perhaps unavoidably, Internet crime, in conjunction with expanded government monitoring of communications has caused irreparable damage to the basic definition of privacy (the state or condition of being free from unwanted surveillance). Implementing privacy in personal computer systems has traditionally been the domain of the paranoid computer specialist. In order for basic privacy to become pervasive among the non-technical user base, we believe that it must imitate the usage of other successful security (and other) services. Services like filesystem encryption, email and web security are successful because they are invisible to the user. Other services (not related to security) such as backups, networking, file searching, etc., also gain traction by being well integrated with the user's operating environment. In most cases, this means embedding such services in the OS. In this work, we propose a new paradigm for implementing privacy, as an operating system service. We believe that privacy, similarly to other security services, is a service that has cross-application appeal and must therefore be centrally positioned.
Multirate spectral analysis for passive sonar
Authors: J. Woodard, J. Creekmore
Venue: Integrated Computer-Aided Engineering (2003)

Because of widespread application in audio and image coding, subband structures are now well understood. Multirate subband implementations provide significant computational advantages while reducing distortion caused by sample rate changes. Some so-called perfect reconstruction systems can even eliminate all aliasing distortion caused by tandeming multirate spectral analysis and synthesis, as is the case in coding applications. Despite the widespread popularity in coding, the potential of multirate subband structures for general purpose spectral analysis seems to be largely overlooked. This paper reviews one such structure--the multirate filter bank--and demonstrates its utility as a spectrum analyzer of signals, with particular emphasis on passive sonar. The main advantage of the multirate filter bank is that it provides adjustable time-frequency resolution, and in fact, is shown to be a generalization of the Discrete Fourier Transform. Issues of aliasing, computation, and latency are discussed and passive sonar data sets are used for illustration.
Seamless Simulation of Hybrid Systems with Discrete Event Software Packages
Authors: James Nutaro, Teja Kuruganti, Mallikarjun Shankar
Venue: Proceedings of the 40th Annual Simulation Symposium (2007)

This paper characterizes a class of hybrid systems that can be readily integrated with discrete event models and seamlessly simulated using available discrete event simulation software. We characterize this class of hybrid systems in terms of the Discrete Event System Specification, Hybrid Input/Output Automata, and as an event oriented simulation program. A small, but illustrative, example demonstrates the utility of these types of hybrid systems and the relative ease with which they can be incorporated into a discrete event simulation.