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114th Annual ASEE Conference and Exposition, 2007

作者： Li, Peng Lunsford, Philip Mohammed, Tijjani Toderick, Lee Li, Chengcheng East Carolina University United States Department of Technology Systems East Carolina University United States Information and Computer Technology Program Department of Technology Systems East Carolina University United States

Virtual machine (VM) technology was recently adopted in an undergraduate lab on Intrusion Detection Technologies. Each student was provided with a pre-built, but non-configured Fedora Core 5 Linux VM image that was used to complete hands-on labs using the virtual machine on her/his own computer. To prepare the lab environment, a virtual network was built with Windows, Linux, FreeBSD, and Solaris virtual machines to simulate network attacks. Network traces of attacks were generated inside the virtual network using Metasploit Framework and other penetration testing tools. Student exercises included installing and using host-based intrusion detection systems, network-based intrusion detection systems and network monitoring tools. Students used TCPdump, Ethereal, Snort, and Bro to analyze the trace files. Students also performed installation and detection of loadable-kernel-module rootkits inside the virtual machine. A "compromised" virtual machine could be deleted after the lab and a fresh virtual machine could be reopened from the pre-built image in no time. The virtual machine was easy to use and easier to maintain than a real computer. Using VM technology, it was possible to build a very "real" network environment at a minimal cost. Hands-on exercises of concepts could be set up in the virtual machine. Students were offered various opportunities to test other platforms such as Solaris without acquiring real physical machines. Additionally, the lab was available to students around the clock. The adoption of VM technology helped students understand basic concepts, increased their interests and improved their troubleshooting skills. In addition, VM technologies expanded the physical boundaries of the lab environment. Students were able to use their own personal computers at home to perform lab exercises that previously would have required multiple machines configured in a dedicated lab room. This flexibility allowed the students to work at their own pace, and extended

关键词： computer networks

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Generalized evidence pre-propagated importance sampling for hybrid bayesian networks

Generalized evidence pre-propagated importance sampling for ...

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AAAI-07/IAAI-07 Proceedings: 22nd AAAI Conference on Artificial Intelligence and the 19th Innovative Applications of Artificial Intelligence Conference

作者： Yuan, Changhe Druzdzel, Marek J. Department of Computer Science and Engineering Mississippi State University Mississippi State MS 39762 Intelligent Systems Program School of Information Sciences University of Pittsburgh Pittsburgh PA 15260

ISBN: (纸本)1577353234

In this paper, we first provide a new theoretical understanding of the Evidence Pre-propagated Importance Sampling algorithm (EPIS-BN) (Yuan & Druzdzel 2003;2006b) and show that its importance function minimizes the KL-divergence between the function itself and the exact posterior probability distribution in Polytrees. We then generalize the method to deal with inference in general hybrid Bayesian networks consisting of deterministic equations and arbitrary probability distributions. Using a novel technique called soft arc reversal, the new algorithm can also handle evidential reasoning with observed deterministic variables. Copyright © 2007, Association for the Advancement of Artificial Intelligence (***). All rights reserved.

关键词： Bayesian networks

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Importance sampling for general hybrid Bayesian networks

Importance sampling for general hybrid Bayesian networks

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11th International Conference on Artificial Intelligence and Statistics, AISTATS 2007

作者： Yuan, Changhe Druzdzel, Marek J. Department of Computer Science and Engineering Mississippi State University Mississippi State MS 39762 United States Decision Systems Laboratory School of Information Sciences and Intelligent Systems Program University of Pittsburgh Pittsburgh PA 15260 United States

Some real problems are more naturally modeled by hybrid Bayesian networks that consist of mixtures of continuous and discrete variables with their interactions described by equations and continuous probability distributions. However, inference in such general hybrid models is hard. Therefore, existing approaches either only deal with special instances, such as Conditional Linear Gaussians (CLGs), or approximate a general model with a restricted version and then perform inference on the simpler model. However, results thus obtained highly depend on the quality of the approximations. This paper describes an importance sampling-based algorithm that directly deals with hybrid Bayesian networks constructed in the most general settings and guarantees to converge to the correct answers given enough time.

关键词： Importance sampling

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Implementing and Improving a method for non-invasive elicitation of probabilities for bayesian networks 07

Implementing and Improving a method for non-invasive elicita...

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International Conference on computer systems and Technologies and Workshop for PhD Students in Computing, CompSysTech '07

作者： De Jongh, Martinus Druzdzel, Marek Rothkrantz, Leon Faculty of Electrical Engineering Mathematics and Computer Science Man-Machine Interaction Group Delft University of Technology Delft Netherlands Decision Systems Laboratory School of Information Sciences and Intelligent Systems Program University of Pittsburgh Pittsburgh PA United States

ISBN: (纸本)9789549641509

Knowledge elicitation is difficult for expert systems that are based on probability theory. The elicitation of probabilities for a probabilistic model requires a lot of time and interaction between the knowledge engineer and the expert. Druzdzel and van der Gaag [5] have proposed a theoretical framework that would allow the use of multiple types of probabilistic information for elicitation of Bayesian networks. This framework has been used as a starting point for the implementation of a non-invasive elication method. © 2007 ACM.

关键词： Linear programming

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Real-time recognition of traffic signs using opponent color filters

Real-time recognition of traffic signs using opponent color ...

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14th World Congress on Intelligent Transport systems, ITS 2007

作者： Baba, Kyoko Hirai, Yuzo Master's Program in Graduate School of Systems and Information Engineering University of Tsukuba 1-1-1 Ten-nodai Tsukuba Ibaraki 305-8573 Japan Department of Computer Science Graduate School of Systems and Information Engineering University of Tsukuba 1-1-1 Ten-nodai Tsukuba Ibaraki 305-8573 Japan

ISBN: (纸本)9781617387777

In order to assist driver's vision, a real-time recognition system for traffic signs is proposed. After detecting sign candidates, biologically inspired opponent-color filters are used to extract symbol parts of signs. After normalizing the size of symbol, structural features are calculated to identify the sign. 5572 segmented images are used to design the algorithm. In a real-time system, the same sign in a sequence of frames is tracked, and a majority vote is used to integrate the recognition results. For test data, 93.8% recall rate and 99.3% precision rate could be attained. In-vehicle experiment also showed high recall and precision rates.

关键词： Traffic signs

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Converting engineering faculty to educators of entrepreneurs

Converting engineering faculty to educators of entrepreneurs

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114th Annual ASEE Conference and Exposition, 2007

作者： Gassert, John D. Blessing, Jeffrey Schmedeman, Larry Fennigkoh, Larry Milwaukee School of Engineering United States AIMBE United States IEEE ABET EAC Program Management Information Systems Program Milwaukee School of Engineering United States United States Association for Computing Machinery Computer Society Rader School of Business Milwaukee School of Engineering United States MSOE's Biomedical Engineering Program

Including concepts of entrepreneurship in an engineering education is nothing new. It would be difficult to find a university that does not offer several courses or specific programs in entrepreneurship. However, finding large numbers of engineering programs that have fully incorporated entrepreneurship into their undergraduate engineering curricula is a far greater challenge. With the growth of outsourcing and global competition, it is imperative that engineering faculty be more than just educators of technically competent engineers. It is important that they be educators of entrepreneurs. This paper will describe a workshop that took initial steps to convince engineering faculty of the importance of educating engineering entrepreneurs and integrating entrepreneurship into an engineering curriculum. It will describe the workshop agenda, the assessment process used to measure if there was a change in faculty attitude, and the preliminary assessment results. © American Society for Engineering Education, 2007.

关键词： Engineering education

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Integrating entrepreneurship into an already ambitious curricula through a collaboration of business and engineering programs

Integrating entrepreneurship into an already ambitious curri...

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114th Annual ASEE Conference and Exposition, 2007

作者： Blessing, Jeffrey Gassert, John D. Schmedeman, Lawrence J. Fennigkoh, Larry Milwaukee School of Engineering United States Management Information Systems Program Milwaukee School of Engineering United States United States Association for Computing Machinery IEEE Computer Society AIMBE United States IEEE ABET EAC Program Rader School of Business Milwaukee School of Engineering United States International Business Bacheloriate Program MSOE's Biomedical Engineering Program MSOE United States

Since October 2005, the business and engineering faculties of the Milwaukee School of Engineering (MSOE) have been working on a novel effort to integrate entrepreneurship into the engineering curricula. Our methods bring together business and engineering students, two groups that normally do not interact in their course of study, to work together on a team design project. The challenge is to introduce entrepreneurship education without significantly increasing the workload on faculty and students. With the help of a grant from the Kern Entrepreneurship Education Network (KEEN) and the National Collegiate Inventors and Innovators Alliance (NCIIA), MSOE will offer entrepreneurship education to engineering students by formally integrating business topics into already ambitious business and engineering programs. In this paper, we present the joint findings and progress of the engineering college and the business school to develop an entrepreneurial spirit on our campus. © American Society for Engineering Education, 2007.

关键词： Curricula

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ASSIST: Adaptive social support for information space traversal 07

ASSIST: Adaptive social support for information space traver...

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Hypertext 2007: 18th ACM Conference on Hypertext and Hypermedia, HT'07

作者： Farzan, Rosta Coyle, Maurice Freyne, Jill Brusilovsky, Peter Smyth, Barry University of Pittsburgh Intelligent Systems Program Pittsburgh PA 15260 United States University College Dublin School of Computer Science and Informatics Belfield Dublin 4 Ireland University of Pittsburgh School of Information Science Pittsburgh PA 15260 United States

ISBN: (纸本)1595938206

Finding relevant information in a hyperspace has been a much studied problem for many years. With the emergence of so called Web 2.0 technologies we have seen the use of social systems for retrieval tasks increasing dramatically. Each system collects and exploits its own pool of community wisdom for the benefit of its users. In this paper we suggest a form of retrieval which exploits the pools of wisdom of multiple social technologies, specifically social search and social navigation. The paper details the added user benefits of merging several sources of social wisdom. We present details of the ASSIST engine developed to integrate social support mechanisms for the users of information repositories. The goal of this paper is to present the main features of the integrated community-based personalization engine that we have developed in order to improve retrieval in the hyperspace of information resources. It also reports the results of an empirical study of this technology. Copyright 2007 ACM.

关键词： World Wide Web

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Multimedia tutorials for minority non-english speaking students and software engineering methods for the same

Multimedia tutorials for minority non-english speaking stude...

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114th Annual ASEE Conference and Exposition, 2007

作者： Baggs, Rhoda Kasza, Tamas Fraites, Patrice Pravata, Ian Witmer, Kohl Shaykhian, Gholam Ali Florida Institute of Technology United States MS in Computer Information Systems Florida Institute of Technology's University College United States International Association of Computer Information Systems Association of Computing Machinery and Several ACM SIGs MS CIS Program F.I.T. Harris Corp. United States NASA United States Engineering Directorate United States Bethune Cookman College Daytona Beach FL United States Operations Research Florida Institute of Technology United States United States Minorities in Engineering Division of ASEE

Multimedia tutorials available online are becoming popular as a means of providing canned explanations for difficult material for brick and mortar classes and online courses. The availability of free multimedia products like Flashplayer by Macromedia ©and the increasing proliferation of high speed access also provides the perfect set of circumstances to produce and make obtainable tutorials for K-12 children who may be especially challenged in some way. For instance, these tutorials would be appropriate and helpful for non-English speaking children to help them learn English and acclimate to their new American environment. This is the perfect time with the increasing Hispanic population within the borders of the United States. Students in the computer Sciences and computer information systems programs at Florida Institute of Technology have been working on such tutorials that have video, animation, audio, text, and images to help get across new ideas and topics to school age children. At the same time, software engineering methods for designing such tools are being developed and explored. The scope of this research is being extended to include audio in multiple languages for non-English speaking students. © American Society for Engineering Education, 2007.

关键词： Multimedia services

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The constraints of the valuation distribution for solving a class of games by using a best response algorithm

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International Journal of Manufacturing Technology and Management 2007年第4期12卷 327-341页

作者： Gangshu, Cai Jie, Zhong Wurman, Peter R. Management Information Systems and Decision Sciences Texas A and M International University Laredo TX 78041 United States Management Information Systems and Decision Sciences Department Texas A and M International University United States Operations Research and Computer Science North Carolina State University Raleigh NC 27695-7535 United States SAS Institute Cary United States Operations Research and Computer Science Graduate Program North Carolina State University United States Computer Science Department North Carolina State University United States

Infinite games with incomplete information are common in practice. First-price, sealed-bid auctions are a prototypical example. To solve this kind of infinite game, a heuristic approach is to discretise the strategy spaces and enumerate to approximate the equilibrium strategies. However, an approximate algorithm might not be guaranteed to converge. This paper discusses the utilisation of a best response algorithm in solving infinite games with incomplete information. We show the constraints of the valuation distributions define the necessary conditions of the convergence of the best response algorithm for several classes of infinite games, including auctions. A salient feature of the necessary convergence conditions lies in that they can be employed to compute the exact Nash equilibria without discretising the strategy space if the best response algorithm converges. Copyright © 2007 Inderscience Enterprises Ltd.

关键词： Game theory

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