ppxscal/embedding_network huggingface dataset:
Digital Libraries Come of Age
Authors: Pam Frost Gardner
Venue: Computing in Science and Engineering (2006)

A personal library that fits in your pocket--it will soon exist, if Michael Hart gets his way. Hart heads Project Gutenberg (PG), the Internet's oldest digital library. On 4 July 2006, PG turned 35. Digital libraries in academia and commercial publishing are coming of age right along with it, driven by the latest technology.
Representing, analysing and managing web service protocols
Authors: Boualem Benatallah, Fabio Casati, Farouk Toumani
Venue: Data Knowledge Engineering (2006)

In the area of Web services and service-oriented architectures, business protocols are rapidly gaining importance and mindshare as a necessary part of Web service descriptions. Their immediate benefit is that they provide developers with information on how to write clients that can correctly interact with a given service or with a set of services. In addition, once protocols become an accepted practice and service descriptions become endowed with protocol information, the middleware can be significantly extended to better support service development, binding, and execution in a number of ways, considerably simplifying the whole service life-cycle. This paper discusses the different ways in which the middleware can leverage protocol descriptions, and focuses in particular on the notions of protocol compatibility, equivalence, and replaceability. They characterize whether two services can interact based on their protocol definition, whether a service can replace another in general or when interacting with specific clients, and which are the set of possible interactions among two services.
Modelling a Knowledge Management System Architecture with INGENIAS Methodology
Authors: Juan P. Soto, Aurora Vizcaino, Javier Portillo, Mario Piattini
Venue: Proceedings of the 15th International Conference on Computing (2006)

Nowadays knowledge management is a topic of vital importance as companies have realized that it offers a competitive advantage. In order to develop a knowledge management system that helps companies to take advantage of their knowledge, different technologies have been used. One of those which has proved to be rather efficient is that of intelligent agents, since these agents can develop tasks on behalf of users. Moreover, agents may use different intelligent techniques and communicate with each other. Taking this into account we are developing a multiagent architecture to help developers to implement knowledge management systems. Before designing the architecture we studied what agent methodology was the most suitable to carry out this task. After a preliminary study we consider that MASCommonKADS and INGENIAS could be the most convenient. In this paper we describe why we finally chose INGENIAS to design our architecture. Moreover, the design of the architecture using the INGENIAS model is also described.
A Web-Based Decision Support System for Evaluation of Benefits of Land Consolidation in China
Authors: Yingmin Cai, Yong Zeng, Daoliang Li
Venue: Proceedings of the Second International Conference on Semantics, Knowledge, and Grid (2006)

This paper describes a Web-based decision support system named WBDSS for the benefits evaluation of land consolidation for local authority. Cost-Benefits Analysis (CBA) model, Net Present Value (NPV) model, Comprehensive Fuzzy Evaluation (CFE) model and relative databases were introduced and integrated. The system can help decision makers in selecting of evaluating method according to land consolidation goal, plan and scenario resultsa. The system has been pilot used in Lipao land consolidation project(LCP) at Badaling town, The experience and feedback from testing and evaluating the system with potential users are discussed. Some valuable insights into the use of the Internet as a evaluation tool in land consolidation are highlighted.
Improving Sensitivity and Reliability of fMRI Group Studies through High Level Combination of Individual Subjects Results
Authors: Bertrand Thirion, Alexis Roche, Philippe Ciuciu, Jean-Baptiste Poline
Venue: Proceedings of the 2006 Conference on Computer Vision and Pattern Recognition Workshop (2006)

fMRI group studies are usually based on the computation of a mean signal for each voxel across subjects (Random Effects Analyzes), assuming that all subjects are in the same anatomical space (Talairach space). Although this is the standard approach, it lacks efficiency because its underlying hypotheses are often violated. We present here a new framework that detects structures of interest from each subject's data, then searches for correspondences across subjects and outlines the most reproducible activation in the group studied. This framework enables a strict control on the number of false positives. It is shown here that this analysis demonstrates increased validity and improves both the sensitivity and reliability of group analyzes compared to standard methods. Moreover, it directly provides information on the activated regions spatial position correspondence or variability across subjects, which is difficult to obtain in standard voxel-based analyzes.
So What is Wrong with Our Profession?
Authors: Rakesh Tandon
Venue: IT Professional (2006)

As IT tries to emerge from an identity crisis, a look at history shows that solutions are complex but within reach. The author ponders the IT profession's cohesiveness and whether it can control its future.
Channel allocation algorithms for multi-carrier multiple-antenna systems
Authors: Issam Toufik, Raymond Knopp
Venue: Signal Processing (2006)

Dynamic channel resource allocation (DCA) exploiting wideband multiuser diversity can provide data transmission with very high spectral efficiency by scheduling at each dimension (time, frequency, space) the user with the best channel conditions. The main issue arising from this allocation is fairness. Base station or users have to wait until their channel is most favorable to transmit. It is commonly considered that fairness comes at the cost of a significant system capacity penalty. In this paper we show that multiuser diversity, and thus an increase of aggregate data rates with the size of the user population, can still be successfully achieved even with deterministic channel use and that even under a hard fairness constraint we can achieve performance which comes close to those of the optimal unfair policy for K-user systems with K parallel sub-channels. We propose and compare different algorithms which perform channel allocation yielding variable-rate/constant-power (Max-Min allocation and maximum total rate allocation) and fixed-rate/variable-power (fixed rate allocation). We show the effect of system bandwidth (and thus sub-channel correlation) on wideband multiuser diversity. This paper also investigates the performance of combined orthogonal channel and antenna allocation algorithms in multiple-antenna multi-channel systems. We extend the proposed Max-Min allocation algorithm to the multiple-antenna systems and compare its performance in two different transmission scenarios (spatial multiplexing and space time coding). An extension of the Max-Min allocation algorithm to the general case of an arbitrary number of users is also given. The proposed techniques are applicable, for instance, in orthogonal frequency division multiple-access (OFDMA) systems with dynamic sub-carrier allocation.
Analysis of a large in-car speech corpus
Authors: Hiroshi Fujimura, Nobuo Kawaguchi, Shigekio Matsubara, Katsunobu Itou, Kazuya Takeda
Venue: Proceedings of the 21st International Conference on Data Engineering Workshops (2005)

We analyze the dependency oj.conversationa1 utterances on the mode of dialogue. A speech corpus of 800 speakers collected utzder three dzperent modes, i.e., talking to a human operutor u WOZ systenz and an ASR systenz, is used for analysis. Characteristics such as sentence conzplexity, loudness of the voice and speaking-rate were found to be sign$cuntly different among the dialogue modes. Linear regression unalysis results also clarlfi the relative importance ofthose churucteristic.s on speech recognition accuracy.
Performance implications of chipset caches in web servers
Authors: R. Iyer
Venue: Proceedings of the 2003 IEEE International Symposium on Performance Analysis of Systems and Software (2003)

As Internet usage continues to expand rapidly, careful attention needs to be paid to the design of Internet servers for achieving high performance and end-user satisfaction. In this paper, with the aim of improving memory system performance of Internet servers, we propose and evaluate various design alternatives for "chipset caches", a shared cache layer embedded within a server chipset. Using our trace-based cache simulation framework (CASPER) and SPECweb99 as a representative workload for web servers, we present the performance implications of chipset caches in a front-end dual-processor web server. We start by analyzing the improvement gained by caching the data from processor-initiated requests alone. We study the sensitivity to basic cache parameters (such as cache size and associativity) and also study the impact of prefetching into the chipset cache. We then present the performance implications of routing memory requests initiated by I/O devices through the chipset cache. Finally, we also study the implications of making the chipset cache inclusive. Based on detailed simulation data and its implications on system level performance, this paper shows that chipset caches have significant potential for future Internet servers. The ACM Portal is published by the Association for Computing Machinery. Copyright © 2010 ACM, Inc. Terms of Usage Privacy Policy Code of Ethics Contact Us Useful downloads: Adobe Acrobat QuickTime Windows Media Player Real Player
Supervised probabilistic principal component analysis
Authors: Shipeng Yu, Kai Yu, Volker Tresp, Hans-Peter Kriegel, Mingrui Wu
Venue: Proceedings of the 12th ACM SIGKDD international conference on Knowledge discovery and data mining (2006)

Principal component analysis (PCA) has been extensively applied in data mining, pattern recognition and information retrieval for unsupervised dimensionality reduction. When labels of data are available, e.g., in a classification or regression task, PCA is however not able to use this information. The problem is more interesting if only part of the input data are labeled, i.e., in a semi-supervised setting. In this paper we propose a supervised PCA model called SPPCA and a semi-supervised PCA model called S2PPCA, both of which are extensions of a probabilistic PCA model. The proposed models are able to incorporate the label information into the projection phase, and can naturally handle multiple outputs (i.e., in multi-task learning problems). We derive an efficient EM learning algorithm for both models, and also provide theoretical justifications of the model behaviors. SPPCA and S2PPCA are compared with other supervised projection methods on various learning tasks, and show not only promising performance but also good scalability.
Continuation of Bifurcations in Periodic Delay-Differential Equations Using Characteristic Matrices
Authors: Róbert Szalai, Gábor Stépán, S. John Hogan
Venue: SIAM Journal on Scientific Computing (2006)

In this paper we describe a method for continuing periodic solution bifurcations in periodic delay-differential equations. First, the notion of characteristic matrices of periodic orbits is introduced and equivalence with the monodromy operator is demonstrated. An alternative formulation of the characteristic matrix is given, which can be computed efficiently. Defining systems of bifurcations are constructed in a standard way, including the characteristic matrix and its derivatives. For following bifurcation curves in two parameters, the pseudo-arclength method is used combined with Newton iteration. Two test examples (an interrupted machining model and a traffic model with driver reaction time) conclude the paper. The algorithm has been implemented in the software tool PDDE-cont.
Practitioners' perception of the impacts of virtual reality on discrete-event simulation
Authors: Justice I. Akpan, Roger J. Brooks
Venue: Proceedings of the 37th conference on Winter simulation (2005)

This paper presents the results from surveying simulation practitioners from industry and academics who have used 2D or 3D software applications for Discrete-Event Simulation (DES) projects. The survey focused on the impacts of Virtual Reality (VR) on DES activities. The findings indicate the software used, the applications areas, the stages in the simulation modeling process where Visual Display is commonly used, and a comparative evaluation of the benefits and costs associated with modeling in 3D over 2D. Other results indicate possible influence of each of the two displays on simulation results, effects on users' understanding of the modeled system and any corresponding influence on decision-making. The findings also incorporate the pitfalls to avoid when modeling in 3D, and speculations about the future of VR-based DES (VRSIM) practice.
Benefits of advertising wavelength availability in distributed lightpath establishment
Authors: Shu Shen, Gaoxi Xiao, Tee Hiang Cheng
Venue: Computer Networks: The International Journal of Computer and Telecommunications Networking (2006)

In this paper, we study the benefits of advertising wavelength availability in a distributed lightpath establishment environment by extensive simulations. Various cases with different routing and wavelength assignment methods, densities of wavelength conversions, and degrees of network connectivities are evaluated. In all these cases, we show that advertising wavelength availability can only improve network blocking performance under light traffic load. In addition, we demonstrate how the performance gain is affected by routing methods, wavelength conversion, and network topology.
BiblioViz: a system for visualizing bibliography information
Authors: Zeqian Shen, Michael Ogawa, Soon Tee Teoh, Kwan-Liu Ma
Venue: Proceedings of the 2006 Asia-Pacific Symposium on Information Visualisation - Volume 60 (2006)

The InfoVis 2004 contest led to the development of several bibliography visualization systems. Even though each of these systems offers some unique views of the bibliography data, there is no single best system offering all the desired views. We have thus studied how to consolidate the desirable functionalities of these systems into a cohesive design. We have also designed a few novel visualization methods. This paper presents our findings and creation: BiblioViz, a bibliography visualization system that gives the maximum number of views of the data using a minimum number of visualization constructs in a unified fashion.
A Programmable Parallel Structure to perform Galois Field Exponentiation
Authors: Kundan Kumar, Debdeep Mukhopadhyay, Dipanwita Roy Chowdhury
Venue: Proceedings of the 9th International Conference on Information Technology (2006)

In this paper we propose a new exponentiation architecture in GF(2m). The core of the architecture is a parallel structure for multiplication and squaring, which is based on the state transitions of programmable Cellular Automata (CA). The proposed architecture requires hardware of the order m2 and the time complexity is m. The performance of the design outperformed existing architectures based on Systolic Array and Cellular Automata. The design can thus be effectively applied in public key cryptosystems like ElGamal and Diffie-Hellman Key exchange. The regular, cascadable structure of the Cellular Automata leads to extremely scalable VLSI design.
Multi Unit Auctions with Constraints in Financial Domain
Authors: A. R. Dani, Arun K. Pujari, V. P. Gulati
Venue: Proceedings of the The 8th IEEE International Conference on E-Commerce Technology and The 3rd IEEE International Conference on Enterprise Computing, E-Commerce, and E-Services (2006)

One of the very important applications of auctions in many countries in last few years in financial domain has been privatization of state owned enterprises. Traditionally auction based mechanisms have been used for leasing of mining rights, bandwidth allocation etc. In last few years there has been growing interest in Internet based market places because of wide spread use of auction based protocols for electronic commerce. Many Internet based sites have implemented different types of auctions. In this paper we analyze the problem of Initial Public Offering (IPO) of Government owned companies. We also consider scenario with different types of constraints. We formulate this problem as nonlinear integer programming problem. An algorithm, which computes the optimum solution, has been developed. The algorithm generates optimum solution with polynomial time complexity.
One-dimensional transport in polymer nanowires
Authors: A. N. Aleshin, H. J. Lee, K. Akagi, Y. W. Park
Venue: Microelectronic Engineering (2005)

We report the results of transport studies of quasi-one-dimensional (1D) conductors - helical polyacetylene fibers doped with iodine and the data analysis for other polymer single fibers and tubes (diameter=15-100nm). We found that at 30K
Low power downlink MAC protocols for infrastructure wireless sensor networks
Authors: Amre El-Hoiydi, Jean-Dominique Decotignie
Venue: Mobile Networks and Applications (2005)

This paper addresses low power medium access control (MAC) protocols for the downlink channel of infrastructure wireless sensor networks. Access points are assumed to be energy unconstrained. The trade-off between the power consumption of the sensor nodes and the transmission delay is analyzed, focusing on low traffic. We describe WiseMAC (Wireless Sensor MAC), a new protocol for the downlink of infrastructure wireless sensor networks. Another original contribution is the presentation and analysis of PTIP (Periodic Terminal Initiated Polling). Here, polling is used in the reversed direction as compared to common polling protocols. WiseMAC and PTIP are compared with PSM (Power Save Mode), the power save protocol used in both the IEEE 802.11 and IEEE 802.15.4 ZigBee standards. Analytical expressions are derived for the power consumption and the transmission delay for each protocol, as a function of the wakeup period. It is shown that WiseMAC provides, with low bit rate radio transceivers, a significantly lower power consumption than PSM. Although less energy efficient than WiseMAC and PSM, it is shown that PTIP can, thanks to its implementation simplicity, become attractive for applications tolerating large transmission delays.
Children online: constructing community standards
Authors: Michele Evard
Venue: Proceedings of the 1996 international conference on Learning sciences (1996)

One week into her design of an educational video game, ten-year-old Renee asked the following question:How do you make words appear on the screen when you reach a certain point of the screen or you reach a shape that is on the screen?
Visual Priming Within and Across Symbolic Format Using a Tachistoscopic Picture Identification Task: A PET Study
Authors: Karine Lebreton, Béatrice Desgranges, Brigitte Landeau, Jean-Claude Baron, Francis Eustache
Venue: Journal of Cognitive Neuroscience (2001)

The present work was aimed at characterizing picture priming effects from two complementary behavioral and functional neuroimaging (positron emission tomography, PET) studies. In two experiments, we used the same line drawings of common living/nonliving objects in a tachistoscopic identification task to contrast two forms of priming. In the within-format priming condition (picture-picture), subjects were instructed to perform a perceptual encoding task in the study phase, whereas in the cross-format priming condition (word-picture), they were instructed to perform a semantic encoding task. In Experiment 1, we showed significant priming effects in both priming conditions. However, the magnitude of priming effects in the same-format/perceptual encoding condition was higher than that in the different-format/semantic encoding condition, while the recognition performance did not differ between the two conditions. This finding supports the existence of two forms of priming that may be subserved by different systems. Consistent with these behavioral findings, the PET data for Experiment 2 revealed distinct priming-related patterns of regional cerebral blood flow (rCBF) decreases for the two priming conditions when primed items were compared to unprimed items. The same-format priming condition involved reductions in cerebral activity particularly in the right extrastriate cortex and left cerebellum, while the different-format priming condition was associated with rCBF decreases in the left inferior temporo-occipital cortex, left frontal regions, and the right cerebellum. These results suggest that the extrastriate cortex may subserve general aspects of perceptual priming, independent of the kind of stimuli, and that the right part of this cortex could underlie the same-format-specific system for pictures. These data also support the idea that the cross-format/semantic encoding priming for pictures represents a form of lexico-semantic priming subserved by a semantic neural network extending from left temporo-occipital cortex to left frontal regions. These results reinforce the distinction between perceptual and conceptual priming for pictures, indicating that different cerebral processes and systems are implicated in these two forms of picture priming.
The challenge of creating cooperating mobile services: experiences and lessons learned
Authors: Annika Hinze, George Buchanan
Venue: Proceedings of the 29th Australasian Computer Science Conference - Volume 48 (2006)

In this paper, we present a mobile infrastructure for cooperating information services. This infrastructure is demonstrated through the example of a Tourist Information Provider (TIP) system. TIP delivers context-sensitive information from a variety of services to the user. The underlying communication is event-based to support continually changing information.We demonstrate two examples of the use of context-sensitive services in TIP: first, the presentation of sight information using a Zoomable Map service which links into a detailed information service; second, the exploitation of contextual information to deliver targeted recommendations to the user. Through these examples, we demonstrate the requirements for mobile multi-service systems that support flexible cooperating services.
A JMX toolkit for merging network management systems
Authors: Feng Lu, Kris Bubendorfer
Venue: Proceedings of the 29th Australasian Computer Science Conference - Volume 48 (2006)

The ever increasing size of networks has resulted in a corresponding escalation of administration costs and lengthy deployment cycles. Clearly, more scalable and flexible network management systems are required to replace existing centralised services. The work described in this paper forms part of a new network management system that fuses dynamic extensibility, Java Management Extension (JMX), and mobile agents. The primary focus is on integration with the many widely deployed legacy SNMP-based network management systems. One of the primary contributions is the design of a generic SNMP adaptor to enable JMX compliant agents to be accessed by SNMP-based management applications. A set of SNMP APIs have been developed to support the development of the SNMP adaptor. A number of other tools have been developed to support the SNMP adaptor, these include: a Management Information Base (MIB) compiler that automatically generates MBeans representing a given SNMP MIB; and a SNMP proxy service to allow non-SNMP management applications to access the SNMP agent using a variety of protocols.