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作者： Huang, Hung-Hsuan Cerekovic, Aleksandra Pandzic, Igor S. Nakano, Yukiko Nishida, Toyoaki Graduate School of Informatics Kyoto University Kyoto Japan Faculty of Electrical Engineering and Computing University of Zagreb Zagreb Croatia Faculty of Science and Technology Seikei University Seikei Japan

Embodied conversational agents (ECAs) are computer-generated, human-like characters that interact with human users in face-to-face conversations. ECA is a powerful tool for representing cultural differences and is suitable for interactive training or edutainment systems. This article presents preliminary results from the development of a culture-adaptive virtual tour guide agent for serving Japanese, Croatian, and general Western users by displaying appropriate verbal and non-verbal behaviors. It is being implemented in Generic ECA Framework, a modular framework for developing ECAs. Dividing the ECA functions into reusable and loosely coupled modules minimizes the effort required to implement additional behavior and facilitates incremental scale up of the system. © Springer-Verlag London Limited 2009.

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BRQS Matching Algorithm for Searching Protein Sequence Databases

BRQS Matching Algorithm for Searching Protein Sequence Datab...

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International Conference on Future Computer and Communication, ICFCC

作者： Ahmad Fadel Klaib Hugh Osborne Informatics Department School of Computing and Engineering University of Huddersfield Huddersfield UK School of Computing and Engineering University of Huddersfield Huddersfield UK

String matching algorithms play a key role in many computer science problems, challenges and in the implementation of computer software. This problem has received a great deal of attention due to various applications in computational biology. In our study, we propose a new algorithm called BRQS. Experimental results show that it offers fewer numbers of comparisons and offers improved elapsed searching time when compared to other well-known algorithms for searching any length of alphabets and patterns. The proposed algorithm is applicable to search protein sequence databases as well as any other string searching applications.

关键词： Protein sequence Databases Pattern matching Software algorithms Biology computing Data engineering Amino acids informatics Computer science Application software

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Simulation of Needle Insertion and Tissue Deformation for Modeling Prostate Brachytherapy

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Brachytherapy 2010年 9卷 S72-S73页

作者： Chentanez, Nuttapong, M.S. Alterovitz, Ron, Ph.D. Ritchie, Daniel Cho, Lita, B.S. Hauser, Kris K., Ph.D. Goldberg, Ken, Ph.D. Shewchuk, Jonathan R., Ph.D. O'Brien, James F., Ph.D. Electrical Engineering and Computer Sciences University of California Berkeley Berkeley CA Computer Science University of North Carolina at Chapel Hill Chapel Hill NC School of Informatics and Computing Indiana University at Bloomington Bloomington IN Industrial Engineering and Operations Research University of California Berkeley Berkeley CA

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Video Volume Segmentation for Event Detection

Video Volume Segmentation for Event Detection

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International Conference on Computer Graphics, Imaging and Visualization, CGIV

作者： Jing Wang Zhijie Xu Qian Xu Department of Informatics School of Computing and Engineering University of Huddersfield Huddersfield UK

Video processing for surveillance and security applications has become a research hotspot in the last decade. This paper reports a research into volume-based segmentation techniques for video event detection. It starts with an introduction of the structure in 3D video volumes denoted by spatio-temporal features extracted from video footages. The focus of the work is on devising an effective and efficient 3D segmentation technique suitable to the volumetric nature of video events through deploying innovative 3D clustering methods. It is supported by the design and experiment on the 3D data compression techniques for accelerating the pre-processing of the original video data. An evaluation on the performance of the developed methods is presented at the end.

关键词： Event detection Shape Video compression Feature extraction Image segmentation Surveillance Data mining Humans Data structures Computer graphics

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BlogTrackers: A Tool for Sociologists to Track and Analyze Blogosphere 3

BlogTrackers: A Tool for Sociologists to Track and Analyze B...

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3rd International AAAI Conference on Weblogs and Social Media, ICWSM 2009

作者： Agarwal, Nitin Kumar, Shamanth Liu, Huan Woodward, Mark Computer Science & Engineering School of Computing & Informatics United States Department of Religious Studies College of Liberal Arts and Science Arizona State University TempeAZ85281 United States

ISBN: (纸本)9781577354215

We present a tool BlogTrackers, which assists sociologists to track and analyze blogs of particular interests by designing and integrating unique features. We present an overview of BlogTrackers, illustrate its functions of various components of BlogTrackers, and outline future work for expansion in meeting the growing needs of sociologists. Copyright © 2009, Association for the Advancement of Artificial Intelligence (***). All rights reserved.

关键词： Blogs

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Towards better integration of performing and managing the information systems development

Towards better integration of performing and managing the in...

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ICAT 2009 - 2009 22nd International Symposium on Information, Communication and Automation Technologies

作者： Šabić, Zlatan Zaimović, Tarik Department for Computing and Informatics Faculty of Electrical Engineering University of Sarajevo Sarajevo Bosnia and Herzegovina Department for Management Information Technologies School of Economics and Business University of Sarajevo Sarajevo Bosnia and Herzegovina

ISBN: (纸本)9781424442218

In this paper we discuss one relatively hidden but important issue related to information systems development - weak integration of performing and managing the information systems development. Among others, two causes for such weak integration are identified as important - weak integration of methodological support to the performing and managing the development, and difficulties in knowledge transfer. We show that in practice this may have some important adverse consequences for development process, such as communication problems between engineering and managerial parts of the development team, or insisting on application of inappropriate method. In this paper we argue that the methodological integration is, rather than methodological innovation, a potential solution to this problem - both processes have traditionally quite well developed methodological support but the essential interconnection of these methods is often missing. As another potential improvement primarily intended to facilitate knowledge transfer within development team, we also suggest stronger integration of knowledge that the development process managers should possess. ©2009 IEEE.

关键词： Integration

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Implementing a multi-user tour guide system with an embodied conversational agent 1

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5th International Conference on Active Media Technology, AMT 2009

作者： Čereković, Aleksandra Huang, Hsuan-Hung Furukawa, Takuya Yamaoka, Yuji Pandžić, Igor S. Nishida, Toyoaki Nakano, Yukiko Faculty of Electrical Engineering and Computing Zagreb Croatia Graduate School Informatics Kyoto University Japan Dept. of Computer and Information Science Faculty of Science and Technology Seikei University Tokyo Japan

ISBN: (数字)9783642048753

ISBN: (纸本)9783642048746

In recent years, computer-generated interactive virtual characters, called Embodied Conversational Agents (ECAs), are subjects of considerable ongoing research. Nevertheless, their conversational abilities are mediocre compared to real human behaviors. Among limitations, most of ECAs are incapable of participating in natural conversations in which the number of participants can change dynamically. In the ongoing work we investigate principles of integrating a multi-user support in an ECA system. We present experiments and implementation approach of a prototype system in which a tour guide ECA interacts with one or two users. The system combines different technologies to detect and address the system users and draw their attention. Experimental interaction with the system produces encouraging results. The system can address the user's appearance, departure, decreased level of interest and identify his conversational role. © 2009 Springer-Verlag.

关键词： Behavioral research

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Reports of the AAAI 2010 conference workshops

Reports of the AAAI 2010 conference workshops

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作者： Aha, David W. Boddy, Mark Bulitko, Vadim D'Avila Garcez, Artur S. Doshi, Prashant Edelkamp, Stefan Geib, Christopher Gmytrasiewicz, Piotr Goldman, Robert P. Halevy, Alon Hitzler, Pascal Isbell, Charles Josyula, Darsana Kaelbling, Leslie Pack Kersting, Kristian Kunda, Maithilee Lamb, Luis C. Marthi, Bhaskara McGreggor, Keith Mihalkova, Lilyana Nastase, Vivi Natarajan, Sriraam Provan, Gregory Raja, Anita Ram, Ashwin Riedl, Mark Russell, Stuart Sabharwal, Ashish Smaus, Jan-Georg Sukthankar, Gita Tuyls, Karl Van Der Meyden, Ron Adaptive Systems Section Naval Research Laboratory Washington DC United States Adventium Labs. Minneapolis MN United States Department of Computer Science University of Alberta Canada City University London United Kingdom University of Georgia United States University of Bremen Germany School of Informatics University of Edinburgh United Kingdom University of Illinois Chicago United States Smart Information Flow Technologies LLC Minneapolis MN United States Structured Data Group Google Research United States Department of Computer Science Wright State University Dayton OH United States School of Interactive Computing Georgia Institute of Technology Atlanta GA United States Department of Computer Science Bowie State University United States Department of Computer Science and Engineering Massachusetts Institute of Technology United States Statistical Relational Mining Group Fraunhofer IAIS Germany Department of Computer Science Federal University of Rio Grande Do sul Brazil Willow Garage Inc. CA United States Computer Science Department University of Maryland College Park United States Heidelberg Institute for Theoretical Studies Heidelberg Germany Department of Computer Science University of Wisconsin Madison United States University College Cork Ireland Cork Complex Systems Lab. Ireland Department of Software and Information Systems University of North Carolina Charlotte United States Department of Computer Science and Engineering University of California Berkeley United States Department of Computer Science Cornell University United States Institute for Computational Sustainability United States University of Freiburg Germany School of Electrical Engineering and Computer Science University of Central Florida United States Maastricht University Netherlands University of New South Wales NICTA Australia

The AAAI-10 workshop program was held on July 11-12, 2010, at the Westin Peachtree Plaza in Atlanta, Georgia. The workshop program included 13 workshops covering a wide range of topics in artificial intelligence. There were several presentations on particular formalisms for combining the levels of planning from the perspectives of classical planning, motion planning, POMDPs, search-based planning, and temporal logic-based constraints. Henry Lieberman from Massachusetts Institute of Technology Media Laboratory presented work developing a platform for knowledge acquisition and usage from expert users, built upon experience with eliciting information from nonexperts in a collaborative manner. The objective of the AAAI Workshop on Goal-Directed Autonomy (GDA) was to encourage discussion and novel contributions on intelligent agents that can self-select their goals. Jeremy Baxter from QinetiQ focused on user interaction, while Nick Hawes described a goal-directed reasoning framework for controlling a mobile robot.

关键词： Motion planning

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Efficient recovery of jointly sparse vectors 09

Efficient recovery of jointly sparse vectors

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Proceedings of the 23rd International Conference on Neural Information Processing Systems

作者： Liang Sun Jun Liu Jianhui Chen Jieping Ye School of Computing Informatics and Decision Systems Engineering Arizona State University Tempe AZ

ISBN: (纸本)9781615679119

We consider the reconstruction of sparse signals in the multiple measurement vector (MMV) model, in which the signal, represented as a matrix, consists of a set of jointly sparse vectors. MMV is an extension of the single measurement vector (SMV) model employed in standard compressive sensing (CS). Recent theoretical studies focus on the convex relaxation of the MMV problem based on the (2,1)-norm minimization, which is an extension of the well-known 1-norm minimization employed in SMV. However, the resulting convex optimization problem in MMV is significantly much more difficult to solve than the one in SMV. Existing algorithms reformulate it as a second-order cone programming (SOCP) or semidefinite programming (SDP) problem, which is computationally expensive to solve for problems of moderate size. In this paper, we propose a new (dual) reformulation of the convex optimization problem in MMV and develop an efficient algorithm based on the prox-method. Interestingly, our theoretical analysis reveals the close connection between the proposed reformulation and multiple kernel learning. Our simulation studies demonstrate the scalability of the proposed algorithm.

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A design methodology for game-based second language learning software on mobile phones

A design methodology for game-based second language learning...

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3rd International Conference on Internet Technologies and Applications, ITA 09

作者： Robison, Faranak Fotouhi-Ghazvini Ali Moeini David Earnshaw, Rae A. Excell, Peter S. Department of Software Engineering University of Qom Qom 37165 Iran University of Tehran Informatics Center 286 Keshavarz Blvd. Tehran Iran School of Computing Informatics and Media University of Bradford United Kingdom Centre for Applied Internet Research Glyndŵr University Wrexham United Kingdom

ISBN: (纸本)9780946881659

Work in progress on the development of mobile learning software, based on game paradigms, is reported. The software is primarily intended for use, and is being developed, in the context of a developing-world country (Iran) where there are particular cultural sensibilities, but there is immense potential to exploit the mobile phone system as the most convenient and lowest-cost mode of ownership of an information-technology device with connection to the Internet. These considerations apply to a large proportion of the current world, and hence the lessons learned from the work have wide applicability. Pedagogical and cultural aspects of the design of mobile games for learning a second language are explored and used to establish basic principles of the design of the game. Prototype games are reported, developed using the most portable software platform, Java 2 Micro Edition. These will be used as a development platform to implement the chosen pedagogical and cultural design decisions.

关键词： Cellular telephones

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