ppxscal/embedding_network huggingface dataset:
Research on Structure Designing of Agent Organization Based on Hybrid Genetic Algorithm
Authors: Xiaohong Peng, Zhong Liu, Jincai Huang, Dongsheng Yang
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)

In MAS, organization is an effective solution mode to complicated problems. In this mode, the basic elements of agent organizational structure are defined, which provides a basic for the mathematical formulation of organizational structure designing. In this paper, a novel hybrid genetic algorithm is proposed, multi-PRI list dynamic scheduling method are nested in genetic algorithm to gain a new strategy. And the results and computation complexities of hybrid genetic algorithm and traditional multi-phase algorithms to address the problem of organization designing are analyzed and compared.
Evaluation of Probabilistic Payment Systems
Authors: Ahmed M. Hamad, Mohamed Kouta, Yasmine M. Afify
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)

With the development of pay-per-view and multimedia streaming services, there is an increasing demand for practical micropayment mechanisms. In this paper, we investigate the applicability of probabilistic payment schemes for micropayments and propose a framework to evaluate them. The framework consists of a well structured parameter vector of characteristics such as transaction cost, delay, computation overhead, overcharging and anonymity. It is applied to lottery tickets, coin flipping and MR2 schemes.the same transaction computation overhead, delay, anonymity, loss risk and non-refutability. MR2 scheme has lower traffic cost, it provides message integrity, authentication, no overcharging, while lottery tickets scheme prevents double spending. MR2 scheme is best suited for micropayments but it still needs a lot of work in respect of building a working micropayment system.
Simulation of grid computing infrastructure: challenges and solutions
Authors: Sugato Bagchi
Venue: Proceedings of the 37th conference on Winter simulation (2005)

Recent advances in middleware technologies such as grid computing have provided IT architects with the ability to design infrastructures that are more flexible and less dedicated to specific application workloads. However, the capabilities of design and analysis tools that IT architects use have not kept pace. In this paper, we describe our progress in developing an IT infrastructure modeling environment that supports an extensible set of analysis tools. We focus in particular on a discrete-event simulator for analyzing the performance of computational workloads that are running on a grid. The unique modeling requirements and challenges presented by the grid computing infrastructure domain are discussed. Efficient event queue management and other simulation techniques to address these challenges are developed. Finally, we position the role of simulation analysis in the larger context of estimating the business and financial returns from grid computing investments.
Reusing Learning Resources based on Semantic Web Technologies
Authors: Sylvain Dehors, Catherine Faron Zucker
Venue: Proceedings of the Sixth IEEE International Conference on Advanced Learning Technologies (2006)

Reusing existing web resources for e-learning is a very promising and highly promoted idea in the research field of web-based education, especially for intelligent or adaptive systems where the cost of authoring is tremendous. However methodologies and tools are still lacking and feasibility at reasonable cost is a pending issue. In this paper we propose an original approach to reuse learning resources based on knowledge engineering and Semantic Web technologies. The QBLS platform reuses learning resources available on the web and pedagogical ontologies to create a convenient learning system for assignment sessions. QBLS is being used on actual curricula at the EPU engineering school of Sophia Antipolis.
Sequential design and rational metamodelling
Authors: Wouter Hendrickx, Tom Dhaene
Venue: Proceedings of the 37th conference on Winter simulation (2005)

Metamodelling techniques are used in many engineering applications for efficient exploration of the design space of complex deterministic simulation systems, and for optimisation purposes and sensitivity analysis. This paper presents a new sequential design and rational metamodelling technique which combines adaptive modelling and sampling algorithms.
Production Storage Resource Broker Data Grids
Authors: Reagan Moore, Sheau-Yen Chen, Wayne Schroeder, Arcot Rajasekar, Michael Wan, Arun Jagatheesan
Venue: Proceedings of the Second IEEE International Conference on e-Science and Grid Computing (2006)

International data grids are now being built that support joint management of shared collections. An emerging strategy is to build multiple independent data grids, each managed by the local institution. The data grids are then federated to enable controlled sharing of files. We examine the management issues associated with maintaining federations of production data grids, including management of access controls, coordinated sharing of name spaces, replication of data between data grids, and expansion of the data grid federation.
Exploiting Platform Technologies for Creating Real-Time Enterprises
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)

Information is power. Speed is king. Real-Time Enterprise presents critical winning edges for modern companies to thrive in the 21st century new economy. While building Real-Time Enterprise capabilities can be a daunting, timeconsuming, and resource-draining task, leveraging emerging platform technologies will shorten the learning curve and lead to speedier, more cost efficient, deployments. In this presentation I will introduce leading platform technologies, including virtualization, manageability, security, and networking, and discuss how they are being used to lower data center cost, provide faster provisioning, improve management quality and performance, simplify development cycle, and deliver affordable business continuity. The excitements brought forth by platform technologies are being felt in the software industry, encouraging a paradigm shift toward component-based development and deployment with standard interfaces. I will close by presenting the vast opportunities, and engineering excitements, that this paradigm shift may bring along.
Weighted average finite difference methods for fractional diffusion equations
Authors: S. B. Yuste
Venue: Journal of Computational Physics (2006)

A class of finite difference methods for solving fractional diffusion equations is considered. These methods are an extension of the weighted average methods for ordinary (non-fractional) diffusion equations. Their accuracy is of order (Δ x)2 and Δt, except for the fractional version of the Crank-Nicholson method, where the accuracy with respect to the timestep is of order (Δt)2 if a second-order approximation to the fractional time-derivative is used. Their stability is analyzed by means of a recently proposed procedure akin to the standard von Neumann stability analysis. A simple and accurate stability criterion valid for different discretization schemes of the fractional derivative, arbitrary weight factor, and arbitrary order of the fractional derivative, is found and checked numerically. Some examples are provided in which the new methods' numerical solutions are obtained and compared against exact solutions.
Finite element analysis of vehicle-bridge interaction
Authors: Leslaw Kwasniewski, Hongyi Li, Jerry Wekezer, Jerzy Malachowski
Venue: Finite Elements in Analysis and Design (2006)

This paper presents results of the finite element (FE) analysis of dynamic interaction between a heavy truck and a selected highway bridge on US 90 in Florida. FE analysis of vehicle-bridge interaction was conducted using commercial program LS-DYNA and the super computer at the Florida State University. Development and implementation of a detailed FE truck model with 3D suspension systems, pneumatic and rotating wheels, appropriate contact algorithms, allowed for realistic representation of the actual vehicle dynamic loading. Several static and dynamic field tests were performed on the same bridge. The experimental data was used for validation of the FE models of the bridge and the truck. Numerical results were found to match well with the experimental data. Results presented in the paper demonstrate a significant potential of using computational mechanics and LS-DYNA code for thorough investigation of the vehicle-bridge interaction, dynamic impact factors, and the ultimate loading of bridges.
Semantically Based Data Integration Environment for Biomedical Research
Authors: Vadim Astakhov, Amarnath Gupta, Jeffrey S. Grethe, Edward Ross, David Little, Aylin Yilmaz, Xufei Qian, Simone Santini, Maryann Martone, Mark Ellisman.
Venue: Proceedings of the 19th IEEE Symposium on Computer-Based Medical Systems (2006)

This paper presents an overview of the data integration mediation system developed as part of the Biomedical Informatics Research Network (BIRN; http://www.nbirn.net) project. BIRN is sponsored by the National Center for Research Resources (NCRR), a component of the National Institutes of Health (NIH). A core BIRN goal is the development of a multi-institution information management system to support biomedical research. Each participating institution maintains a database of their experimental or computationally derived data, and the data integration system performs semantic integration over the databases to enable researchers to perform analyses based on larger and broader datasets than would be available from any single institution's data. This demonstration paper describes architecture, implementation, and capabilities of the semantically based data integration system for BIRN.
IPAC: an interactive approach to access control for semi-structured data
Authors: Sriram Mohan, Yuqing Wu
Venue: Proceedings of the 32nd international conference on Very large data bases (2006)

We propose IPAC(Interactive aPproach to Access Control for semi-structured data), a framework for XML access constraint specification and security view selection. IPAC clearly demarcates access constraint specification, access control strategy and security mechanism (implementation). It features a declarative access constraint specification language, a global access control strategy configuration unit, and an automatic security view generation and ranking tool. IPAC is the first system that assists the DBA in specifying access control strategies and access constraints on XML data, and helps the DBA in choosing the optimal plan that implements the specified strategy and access constraints accurately and efficiently.
Collaborative learning in a 3D virtual environment: design factors and evaluation results
Authors: Nicoletta Di Blas, Caterina Poggi, Thomas C. Reeves
Venue: Proceedings of the 7th international conference on Learning sciences (2006)

The paper describes the design and evaluation of three collaborative 3D virtual environments for learning (i.e. 3D worlds shared through the internet in which learners meet together at the same time). Since the first program was launched in 2002, more than 3,600 students and 180 teachers from Europe and Israel have been involved in these projects. The educational impact has been carefully monitored using a variety of evaluation strategies. The results---in terms of achieved knowledge, skills and attitudes, as well as in terms of overall satisfaction---exceeded our expectations. The design elements that make up these complex educational experiences will be described in a manner that highlights their interplay (rather than as isolated design details) and explains the achievement of both expected and unexpected benefits.
Robustness of geographic protocols in multi-hop wireless networks
Authors: Ahmed Helmy
Venue:  (2005)

Geographic protocols are very promising for multi-hop wireless networks, such as ad hoc and sensor networks. These protocols take advantage of the location information of nodes to provide higher efficiency and scalability. Previous studies have shown the potential and high performance of geographic protocols when evaluated in simulation environments under certain ideal conditions. The theory for geographic protocols has been developed assuming these non-realistic conditions. The goal of our work is to recognize the effects of realistic conditions, which exist in the environments where the systems would be deployed, and to analyze the correctness and performance of the current protocols in detail under these effects, in order to devise solutions to the current problems and to design robust protocols that take these conditions into account. We carry a systematic approach throughout our study by choosing specific protocol types and environmental conditions and using the appropriate methods for evaluation based on each case. We consider protocols that provide basic functions at the network-layer such as: geographic routing, geocasting and geographic rendezvous mechanisms. Our results show the discrepancy in performance when the protocols are evaluated in non-ideal realistic environments compared to the common ideal environments typically used. These results also show the inadequacy of the current protocols to be implemented as-is in real-world. By introducing simple fixes and strategies that take these conditions into account, we show that we can improve the performance significantly. We present a methodology for micro-level behavioral analysis that shows that conditions that violate the unit-graph assumption of network connectivity, such as location errors, obstacles and radio irregularity, cause failure in planarization and consequently face routing. We derive the limits and requirements for the correctness of geographic routing and prove that local algorithms cannot guarantee delivery under arbitrary connectivity. We show also that for acceptable performance, geographic forwarding decisions need to consider the link quality in addition to the distance, and therefore we provide several blacklisting mechanisms and a local optimum metric for greedy forwarding. We believe our guidelines will be crucial for the development of these networks.
Using a subject area model as a learning improvement model
Authors: Errol Thompson
Venue: Proceedings of the 8th Austalian conference on Computing education - Volume 52 (2006)

International literature suggests that to improve student learning in a subject area, strategies should be taught for learning the subject and how to assess the effectiveness of these learning strategies. In software development, the Capability Maturity Model® is used as process improvement model for software development. Can the model be adapted to provide a model for improving learning?A model is proposed based on the principles of the Capability Maturity Model®. It is designed to encourage the learner to reflect on their learning and to evaluate the effectiveness of their learning.
Temporal analysis of a very large topically categorized Web query log
Authors: Steven M. Beitzel, Eric C. Jensen, Abdur Chowdhury, Ophir Frieder, David Grossman
Venue: Journal of the American Society for Information Science and Technology (2007)

The authors review a log of billions of Web queries that constituted the total query traffic for a 6-month period of a general-purpose commercial Web search service. Previously, query logs were studied from a single, cumulative view. In contrast, this study builds on the authors' previous work, which showed changes in popularity and uniqueness of topically categorized queries across the hours in a day. To further their analysis, they examine query traffic on a daily, weekly, and monthly basis by matching it against lists of queries that have been topically precategorized by human editors. These lists represent 13&percnt; of the query traffic. They show that query traffic from particular topical categories differs both from the query stream as a whole and from other categories. Additionally, they show that certain categories of queries trend differently over varying periods. The authors key contribution is twofold: They outline a method for studying both the static and topical properties of a very large query log over varying periods, and they identify and examine topical trends that may provide valuable insight for improving both retrieval effectiveness and efficiency. &copy; 2007 Wiley Periodicals, Inc.
Using PVFS2 to Construct a Large File System in Data Grids
Authors: Chao-Tung Yang, Chien-Tung Pan, Ping-I Chen
Venue: Proceedings of the Seventh International Conference on Parallel and Distributed Computing, Applications and Technologies (2006)

Grid Technology is the great progress of network after Internet, since grid enables the integrated and collaborative use of distributed computing resources owned and managed by multiple organizations, available over a local or wide area network. In this paper, we provided a Data Grid platform with integrated storage to solve such data grid problems by using PVFS2 to increase the data storage space. The experimental results presented show the effectiveness of such proposed combination of technologies.
An Observability Branch Coverage Metric Based on Dynamic Factored Use-Define Chains
Authors: Tao Lv, Ling-yi Liu, Yang Zhao, Hua-wei Li, Xiao-wei Li
Venue: Proceedings of the 15th Asian Test Symposium (2006)

In this paper we propose an observability branch coverage metric (OBCM) based on dynamic factored use-define chains, along with its evaluation method. This technique exploits the efficiency of data-flow analysis rather than methods like fault simulation. Hence it can be easily integrated into HDL compilers or simulators. Experimental results show that OBCM can provide more meaningful coverage data for functional verification than traditional branch coverage metric (BCM).
Shellability properties on planar graded posets and higher order complexes
Authors: Karen L. Collins
Venue:  (2006)

In this thesis we study the notion of shellability on simplicial complexes and posets and especially shellability notions on planar graded posets. A planar poset is one for which its Hasse diagram can be drawn without crossing edges. Shellability has been studied extensively and is a very helpful tool in proving Cohen-Macaulayness. A simplicial complex is shellable if one can totally order its facets F1,...Ft in a way that, if i < j then there exist a k < j and a x &isin; Fj so that Fi &cap; Fj &sube; Fk &cap; Fj = Fj &minus; { x}. We also look at different notions of shellability on posets and study the relations between them and try to find minimal conditions that imply shellability. We find new relations between these notions, like the relations between rank-connectedness and recursive atom ordering (RAO) property, and prove a theorem that points out the equivalence of different notions of shellability like EL-, CL-, EC-, CC-, RAO, rank-onnectedness on a graded planar poset. In addition, we consider an open problem discussed in one of Bj&ouml;rner's papers where he asks whether the higher order complex &Delta; k(P) on a planar semi-modular lattice P is shellable. Here we show, by finding a counterexample, that the statement is not true and try to give an insight what destroys the shellability in a subclass of semimodular lattices.
ITeS - Transcending the Traditional Service Model
Authors: Jyh-sheng Ke
Venue: Proceedings of the IEEE International Conference on e-Business Engineering (2006)

The Renaissance gave birth to the knowledge revolution, and the Industrial Revolution introduced mankind to the wonders of technology. The advent of Information Technology in the 21st century has brought about yet another revolution, the Information Revolution. The recent onset of IT has brought about technological, economical, social, and cultural changes on an unprecedented scale. Among which, IT enabled e-Commerce, revolutionizing the way we go about the traditional exchange of goods, and more importantly, IT infused new life into the service sector, enabling a new breed of service called IT-enabled Service (ITeS). Simply put, ITeS is the integration of IT and specific domain knowledge to increase the innovative values of conventional services produced by industries. ITeS can be sub-divided into two categories. The first of which is the integration of IT functionalities into traditional services. Examples include real-time interpretation services made possible with VoIP services and remote healthcare monitoring services provided via the Internet. The second of which is the transformation of IT itself into a service. The textbook example is Google, which provides services ranging from email, search engine, advertisement, news, and media, all based on the premise of the Internet technology itself. Coupling its manufacturing prowess and experience in software development with a dynamic, diversified, and mature IT environment, Taiwan is the perfect test bed for ITeS. However, ITeS is not without its challenges. For instance, language barriers, potential infrastructure compatibilities, and finding Taiwan's niche in the global ITeS value chain are all issues that need to be addressed. The speech will touch on the rise of ITeS, how ITeS can revolutionize the service sector, the opportunities for Taiwan in this nascent domain, and the challenges it might face while trying to transform from a labor-intensive manufacturing-centric society to one that's knowledge-intensive service-centric.
Wavelet domain bearing estimation in unknown correlated noise
Authors: A. H. Tewfik
Venue: Proceedings of the Acoustics, Speech, and Signal Processing,1994. on IEEE International Conference - Volume 04 (1994)

It is shown that the M-band wavelet domain correlation matrix of a noise process consists of linear structures as long as the spatial correlation function of the noise process decays asymptotically to zero as the distance between samples of the noise tends to infinity and the analyzing M-band wavelet has a large (/spl ges/5) number of vanishing moments. On the other hand, the M-band wavelet domain correlation matrix corresponding to plane waves consists of "plateau" like structures. Next, a procedure that discriminates between the signal information carried by plane waves and the noise information based on the structure of the M-band wavelet domain correlation matrix of the array outputs is proposed.
Future Visions of Technology-Enhanced Professional Learning
Authors: Vana Kamtsiou, Ambjorn Naeve, Lampros Stergioulas, Dimitra Pappa
Venue: Proceedings of the Sixth IEEE International Conference on Advanced Learning Technologies (2006)

The paper presents future visions of technologyenhanced professional learning as expressed in a pan- European roadmapping activity. The paper introduces a new approach to developing a roadmap for technology-enhanced professional learning. Interesting findings from the first phase, which identified the future visions are presented.
Roux-type constructions for covering arrays of strengths three and four
Authors: Charles J. Colbourn, Sosina S. Martirosyan, Tran Trung, Robert A. Walker,  II
Venue: Designs, Codes and Cryptography (2006)

A covering array CA(N;t,k,v) is an N × k array such that every N × t sub-array contains all t-tuples from v symbols at least once, where t is the strength of the array. Covering arrays are used to generate software test suites to cover all t-sets of component interactions. Recursive constructions for covering arrays of strengths 3 and 4 are developed, generalizing many "Roux-type" constructions. A numerical comparison with current construction techniques is given through existence tables for covering arrays.