ppxscal/embedding_network huggingface dataset:
Iterative Combinatorial Auctions with Linear Prices: Results of Numerical Experiments
Authors: Alexander Pikovsky, Pasha Shabalin, Martin Bichler
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)

Iterative Combinatorial Auctions (ICA) have been getting increasing attention in computer science and economics, as they provide an efficient solution to resource allocation problems with superadditive and subadditive valuations. Several auction designs have been proposed in the literature using different types of bidding languages and different types of ask prices. A few auction designs have focused on simple linear prices. Although, it can be shown that exact linear prices are often impossible to calculate, ICAs based on linear prices have performed very well in the laboratory with respect to allocative efficiency. In this paper we focus on three promising auction designs, the Combinatorial Clock Auction, the Resource Allocation Design (RAD) and a modified version of RAD and analyze their performance in discrete event simulations.
Influence of force structure on the stability
Authors: V. A. Goncharenko, V. I. Goncharenko
Venue: Proceedings of the 2003 International Conference on Physics and Control - Volume 4 (2003)

A problem related to the influence of "force structure" on the stability of motion is formulated. The historical development of the problem is presented briefly. Catalyst role of the Metelitsyn paper is emphasized. The selected paths of the problem development are considered.
Semantic principal video shot classification via mixture Gaussian
Authors: Hangzai Luo, Jianping Fan, Jing Xiao, Xingquan Zhu
Venue: Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 1 (2003)

As digital cameras become more affordable, digital video now plays an important role in medical education and healthcare. In this paper, we propose a novel framework to facilitate semantic classification of surgery education videos. Specifically, the framework includes: (a) semantic-sensitive video content characterization via principal video shots, (b) semantic video classification via a mixture Gaussian model to bridge the semantic gap between low-level visual features and semantic visual concepts in a specific surgery education video domain.
Visualising phylogenetic trees
Authors: Wan Nazmee Wan Zainon, Paul Calder
Venue: Proceedings of the 7th Australasian User interface conference - Volume 50 (2006)

This paper describes techniques for visualising pairs of similar trees. Our aim is to develop ways of presenting the information so as to highlight both the common structure of the trees and their points of difference. The impetus for the work comes from the field of bioinformatics, where geneticists construct complex phylogenetic trees to represent the evolution of species or genes. But the techniques can also be used for other tree-structured data such as file systems, parse trees, decision trees, and organisational hierarchies.To investigate our techniques, we have built a prototype application that reads and displays phylogenetic trees in the popular Nexus format. The application incorporates a variety of interactive and automated visualisation techniques, and is implemented in Java. We are working with biologists to see how well the techniques work for real-world data.
Generic Support for Policy-Based Self-Adaptive Systems
Authors: Richard John Anthony
Venue: Proceedings of the 17th International Conference on Database and Expert Systems Applications (2006)

This paper presents a policy definition language which forms part of a generic policy toolkit for autonomic computing systems in which the policies themselves can be modified dynamically and automatically. Targeted enhancements to the current state of practice include: policy self-adaptation where the policy itself is dynamically modified to match environmental conditions; improved support for non autonomics-expert developers; and facilitating easy deployment of adaptive policies into legacy code. The policy definition language permits powerful expression of self-managing behaviours and facilitates a diverse policy behaviour space. Features include support for multiple versions of a given policy type, multiple configuration templates, and meta-policies to dynamically select between policy instances. An example deployment scenario illustrates advanced functionality in the context of a multi-policy stock trading system which is sensitive to environmental volatility.
Optimal digital system design in deep submicron technology
Authors: Krste Asanovic
Venue:  (2006)

The optimization of a digital system in deep submicron technology should be done with two basic principles: energy waste reduction and energy-delay tradeoff. Increased energy resources obtained through energy waste reduction are utilized through energy-delay tradeoffs. The previous practice of obliviously pursuing performance has led to the rapid increase in energy consumption. While energy waste due to unnecessary switching could be reduced with small increases in logic complexity, leakage energy waste still remains as a major design challenge. We find that fine-grain dynamic leakage reduction (FG-DLR), turning off small subblocks for short idle intervals, is the key for successful leakage energy saving. We introduce an FG-DLR circuit technique, Leakage Biasing, which uses leakage currents themselves to bias the circuit into the minimum leakage state, and apply it to primary SRAM arrays for bitline leakage reduction ( Leakage-Biased Bitlines) and to domino logic (Leakage-Biased Domino). We also introduce another FG-DLR circuit technique, Dynamic Resizing, which dynamically downsizes transistors on idle paths while maintaining the performance along active critical paths, and apply it to static CMOS circuits. We show that significant energy reduction can be achieved at the same computation throughput and communication bandwidth by pipelining logic gates and wires. We find that energy saved by pipelining datapaths is eventually limited by latch energy overhead, leading to a power-optimal pipelining. Structuring global wires into on-chip networks provides a better environment for pipelining and leakage energy saving. We show that the energy-efficiency increase through replacement with dynamically packet-routed networks is bounded by router energy overhead. Finally, we provide a way of relaxing the peak power constraint. We evaluate the use of Activity Migration (AM) for hot spot removal. AM spreads heat by transporting computation to a different location on the die. We show that AM can be used either to increase the power that can be dissipated by a given package, or to lower the operating temperature and hence the operating energy. (Copies available exclusively from MIT Libraries, Rm. 14-0551, Cambridge, MA 02139-4307. Ph. 617-253-5668; Fax 617-253-1690.)
Towards understanding the roles of social capital in knowledge integration: A case study of a collaborative information systems project
Authors: Mamata Bhandar, Shan-Ling Pan, Bernard C. Y. Tan
Venue: Journal of the American Society for Information Science and Technology (2007)

Information systems (IS) projects involving multiple organizations are very common today. Knowledge integration in such projects is a complex task of integrating diverse knowledge bases across organizations that may possess distinct strategic goals and even conflicting interests. Prior research has indicated that social capital, a resource based on social relationships, positively influences knowledge integration and interorganizational relationships, but the exact nature of the interaction has been unclear. Based on an in-depth case study, this article examines a four-organization (three clients and one IT service provider) collaborative IS project wherein the clients were business partners for 7 years when they embarked on the project. The study explicitly identifies the roles through which social capital can be leveraged for knowledge integration in a collaborative IS project. Findings suggest that social capital can be leveraged as a motivator, an integrator, and a facilitator during the various stages of a collaborative IS project. &copy; 2007 Wiley Periodicals, Inc.
On the Problem of Coupling Java Algorithms and XML Parsers (Invited Paper)
Authors: Giuseppe Psaila
Venue: Proceedings of the 17th International Conference on Database and Expert Systems Applications (2006)

The joint use of Java and XML is a matter of fact for new developments, even in hard contexts. A recent research area is trying to address how to improve techniques for coupling Java programs and XML Parsers and API. This paper briefly show the current state of the art of this young research area. Two perspectives are considered: efficiency (i.e. improvement of parsing performance) and effectiveness (development of techniques to obtain faster application development processes).
For effective facilities planning: layout optimization then simulation, or vice versa?
Authors: Esra E. Aleisa, Li Lin
Venue: Proceedings of the 37th conference on Winter simulation (2005)

It is widely accepted that simulation is an integral part of any effective facilities planning or layout study. Traditional approaches claim that layout optimization produces strategic results and therefore should precede simulation analysis, which focuses on operational issues. On the other hand, more recent studies suggest that running simulation models prior to conducting layout optimization produces more realistic layouts. In this paper, we contrast these two paradigms, with respect to the general assumptions and the types of applications that advocates from each paradigm have used to support their claim. In addition, we propose guidelines on which approach to pursue according to the layout study objectives and the characteristics of the system under consideration.
Enhanced Specifications for Web Service Composition
Authors: Vassiliki Alevizou, Dimitris Plexousakis
Venue: Proceedings of the European Conference on Web Services (2006)

The service-oriented computing research community has devoted a great deal of attention to Web service specification, discovery and composition. The ability to efficiently select and compose services in order to accomplish a complex user goal is of utmost importance. However, the problem of on-demand composition still lacks satisfactory solutions for the case of complex services intending to serve non-elementary goals and adhering to constraints. Current service specification proposals include definitions of preand post-conditions, i.e., conditions that must be satisfied in the state prior to and after the enactment of the service. However, due to the need for complex compositions, conditions and constraints that do not exist in the individual service specifications arise. For the definition of these conditions, we augment service specifications with invariants and demonstrate how such assertions can be exploited for determining service effects and compositionality.
M2-equipackable graphs
Authors: Yuqin Zhang, Yonghui Fan
Venue: Discrete Applied Mathematics (2006)

Let H be a fixed graph. An H-packing of G is a set of edge disjoint subgraphs of G each isomorphic to H. An H-packing in G with k copies H1. H2.....Hk of H is called maximal if G - ∪i=1k E(Hi) contains no subgraph isomorphic to H. An H-packing in G with k copies H1, H2.....Hk of H is called maximum if no more than K edge disjoint copies of H can be packed into G. A graph G is called H-equipackable if every maximal H-packing in G is also a maximum H-packing in G. By Mt, t ≥ 1, we denote a matching having t edges. In this paper, we investigate the characterization of m2-equipackable graphs.
Neural Specialization for Letter Recognition
Authors: Thad A. Polk, Matthew Stallcup, Geoffrey K. Aguirre, David C. Alsop, Mark D'esposito, John A. Detre, Martha J. Farah
Venue: Journal of Cognitive Neuroscience (2002)

Functional magnetic resonance imaging (fMRI) was used to estimate neural activity while subjects viewed strings of consonants, digits, and shapes. An area on or near the left fusiform gyrus was found that responded significantly more to letters than digits. Similar results were obtained when consonants were used whose visual features were matched with the digits and when an active matching task was used, suggesting that the results cannot be easily attributed to artifacts of the stimuli or task. These results demonstrate that neural specialization in the human brain can extend to a category of stimuli that is culturally defined and that is acquired many years postnatally.
A note on the perturbation bounds of eigenspaces for Hermitian matrices
Authors: Xiaoshan Chen, Wen Li
Venue: Journal of Computational and Applied Mathematics (2006)

Let H be a Hermitian matrix, and H˜ be its perturbed matrix. In this paper, both additive and multiplicative perturbations of eigenspace are studied, and some absolute and relative bounds are presented, which are better than the existing bounds in some sense.
Performing Traditional Knowledge using a Game Engine: Communicating and Sharing Australian Aboriginal Knowledge Practices
Authors: Malcolm Pumpa, Theodor G. Wyeld, Barbara Adkins
Venue: Proceedings of the Sixth IEEE International Conference on Advanced Learning Technologies (2006)

This paper challenges current practices in the use of digital media to communicate Australian Aboriginal knowledge practices in a learning context. It proposes that any digital representation of Aboriginal knowledge practices needs to examine the epistemology and ontology of these practices in order to design digital environments that effectively support and enable existing Aboriginal knowledge practices in the real world. Central to this is the essential task of any new digital representation of Aboriginal knowledge to resolve the conflict between database and narrative views of knowledge [5]. This is in order to provide a tool that complements rather than supplants direct experience of traditional knowledge practices [2]. This paper concludes by reporting on the recent development of an advanced learning technology that addresses this.
TC-ID3: A TESTCODE Based ID3 Classifier for Protein Coding Region Identification
Authors: Srinivasan T., Sathish M., Vamsi G. Krishna, Vinodh Krishnamoorthy
Venue: Proceedings of the International Conference on Computational Inteligence for Modelling Control and Automation and International Conference on Intelligent Agents Web Technologies and International Commerce (2006)

Genes contain their information as specific sequence of nucleotides or bases that are found in DNA molecules. These specific sequences encode instructions on how to make proteins. But the regions of these genes that code for proteins may occupy only a small region of the sequence. Identifying the coding region of the sequence is of vital importance in understanding these genes. This process is automated by using classifiers. In this paper we intend to improve the efficiency of one such classifier, the ID3 Decision Tree Classifier by using a new attribute, the TESTCODE method.
DBNet: A Service-Oriented Database Architecture
Authors: Wee Hyong Tok, Stephane Bressan
Venue: Proceedings of the 17th International Conference on Database and Expert Systems Applications (2006)

At the convergence of peer-to-peer (P2P) and service oriented architectures is the idea of effectively and efficiently managing distribution, heterogeneity and autonomy of information sources and services. In this paper, we take the point of view that next generation database management systems (DBMS) should be a federation of distributed, heterogeneous and autonomous components. Such components constitute web database services. We challenge the conventional notions of what constitute a DBMS, and presents the full spectrum of possible DBMSs based on such a Service- Oriented Database Architecture (SODA). We examine the issues and challenges of SODA. Finally, we propose one possible instance of SODA that we call DBNet. In order to illustrate some of the research issues involved, we present query processing and optimization techniques that we have devised for DBNet.
Cognitive Styles and Students' Interaction with an Instructional Web-site: Tracing Users through Eye-gaze
Authors: Esra Yecan, Kursat Calgiltay
Venue: Proceedings of the Sixth IEEE International Conference on Advanced Learning Technologies (2006)

Users' psychological and physiological differences have been sought by researchers. Cognitive style -one of these differences- is related to a person's approach of getting, organizing, and processing information. It is indicated in the literature that cognitive style has the potential to affect the users' interaction patterns in computer-based interfaces. This study was conducted to reveal the interaction patterns of users with different cognitive styles by using eye-tracking method. Results indicated that users' fixation durations and places might vary among different cognitive style groups, but no statistically significant difference was found.
Performance evaluation of web services invocation over Bluetooth
Authors: Vincenzo Auletta, Carlo Blundo, Emiliano De Cristofaro, Guerriero Raimato
Venue: Proceedings of the ACM international workshop on Performance monitoring, measurement, and evaluation of heterogeneous wireless and wired networks (2006)

Mobile devices should allow users to exploit services anytime, without any place restriction and in a transparent way. The Bluetooth technology achieves this feature, by providing services at a low cost and with a low power consumption. In a few years, most of the devices accessing the web services will be mobile. In this paper, we evaluate performance of a framework allowing a Java application programmer to directly interface Web Services from a mobile device using a Bluetooth connection. Our work focuses on enhancing Web Services' range of action, presenting a proof of concept of how Web Services-based application can use Bluetooth technology as communication channel. Furthermore, our work is also dedicated to allow the framework to use all the different settings and connection modalities provided by Bluetooth technology. This paper evaluates the usability and efficiency of the framework in a real scenario using mobile devices with limited resources
The Panum Proxy Algorithm for Dense Stereo Matching over a Volume of Interest
Authors: A. Agarwal, A. Blake
Venue: Proceedings of the 2006 IEEE Computer Society Conference on Computer Vision and Pattern Recognition - Volume 2 (2006)

Stereo matching algorithms conventionally match over a range of disparities sufficient to encompass all visible 3D scene points. Human vision however does not do this. It works over a narrow band of disparities - Panum's fusional band - whose typical range may be as little as 1/20 of the full range of disparities for visible points. Points inside the band are fused visually and the remainder of points are seen as "diplopic" -that is with double vision. The Panum band restriction is important also in machine vision, both with active (pan/tilt) cameras, and with high resolution cameras and digital pan/tilt.
Using a CSCL-Driven shift in agency to undertake educational reform
Authors: Mark Guzdial, Matthew Realff, Pete Ludovice, Tom Morley, Clayton Kerce, Eric Lyons, Katherine Sukel
Venue: Proceedings of the 1999 conference on Computer support for collaborative learning (1999)

Computer supported collaborative learning has the potential for driving educational reform efforts, but there are many challenges to face before achieving that vision. Two of the most critical are achieving teacher buy-in and motivating students to participate in a knowledge-building community. We have developed a new CSCL tool whose flexibility is inspiring good teachers to create exciting new collaborative learning activities, and whose persistence is an enticement to students. We are now attempting to use this tool to leverage a particular kind of educational reform goal: Achieving integration across curricular boundaries.
Balancing the needs of players and spectators in agent-based commentary systems
Authors: Daniel Fielding, Brian Logan, Steve Benford
Venue: Proceedings of the fifth international joint conference on Autonomous agents and multiagent systems (2006)

We describe an agent-based commentary system for computer games which produces real-time and post-game commentary for spectators. Our system adopts an embodied approach in which reporter agents are directly embodied within the game and are subject to the same constraints as players in terms of perception and movement. We analyse the results of an initial evaluation of the system in terms of the conflicting needs of players and spectators, and show that there is an 'optimal' number of reporter agents that is small enough to be tolerated and even welcomed by the players while at the same time producing commentary which is judged to be sufficiently complete, accurate and interesting by the spectators.
An Intelligent Service Layer Upgrades Environmental Information Management
Authors: Ioannis N. Athanasiadis
Venue: IT Professional (2006)

By interweaving and interpreting data streams, AISLE can bring crucial environmental information to a wider audience.
Assigning tasks in a 24-h software development model
Authors: Pankaj Jalote, Gourav Jain
Venue: Journal of Systems and Software (2006)

With the advent of globalization and the Internet, the concept of global software development is gaining ground. The global development model opens up the possibility of 24-h software development by effectively utilizing the time zone differences. To harness the potential of the 24-h software development model for reducing the overall development time, a key issue is the allocation of project tasks to the resources in the distributed team. In this paper, we examine this issue of task allocation in order to minimize the completion time of a project. We discuss a model for distributed team across time zones and propose a task allocation algorithm for the same. We apply the approach on tasks of a few synthetic projects and two real projects and show that there is a potential to reduce the project duration as well as improve the resource utilization through 24-h development.
Time substitution method in a shock protection problem for nonlinear Hamiltonian systems
Authors: V. A. Proursin
Venue: Proceedings of the 2003 International Conference on Physics and Control - Volume 4 (2003)

A control problem for a system of finite number of masses connected by means of nonlinear spring elements is considered. This problem is reduced to control problems for independent one-degree-of-freedom linear oscillators. The optimal shock isolation problem for nonlinear system with two degree of freedom is investigated. 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