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A recommendation method considering users' time series contexts 09

A recommendation method considering users' time series conte...

引用

3rd International Conference on Ubiquitous Information Management and Communication, ICUIMC'09

作者： Oku, Kenta Nakajima, Shinsuke Miyazaki, Jun Uemura, Shunsuke Kato, Hirokazu Graduate School of Information Science Nara Institute of Science and Technology Ikoma City Nara 630-0101 Japan Faculty of Computer Science and Engineering Kyoto Sangyo University Motoyama Kamigamo Kita-Ku Kyoto-City 603-8555 Japan Department of Informatics Faculty of Informatics Nara Sangyo University 12-1 Tatsuno-kita 3-chome Sango-cho Ikoma-gun Nara 636-8503 Japan

ISBN: (纸本)9781605584058

This paper proposes a recommendation method considering users' time series contexts which are situations that have occurred/will occur in the past/future. There are some recommendation methods that provide information suitable for users' action patterns as the recommendation methods considering them. These methods provide information referring to the other users that have a similar action pattern to that of an active user. However, since a user's action pattern changes depending on the user's contexts, the methods need to refer to the other users' action patterns related to the current user's contexts. In this paper, we propose a recommendation method considering the user's time series contexts considering that the user's action pattern changes depending on the user's contexts. Copyright 2009 ACM.

关键词： Time series

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Concept and design of the intellwheels platform for developing intelligent wheelchairs

Concept and design of the intellwheels platform for developi...

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5th International Conference on informatics in Control Automation and Robotics, ICINCO 2008

作者： Braga, Rodrigo A. M. Petry, Marcelo Moreira, Antonio Paulo Reis, Luis Paulo LIACC - Artificial Intelligence Computer Science Lab University of Porto Rua Dr. Roberto Frias s/n Porto 4200-465 Portugal Informatics Engineering Department FEUP-DEI - Faculty of Engineering University of Porto Rua Dr. Roberto Frias s/n Porto 4200-465 Portugal

ISBN: (纸本)9783642002700

Many people with severe disabilities find it difficult or even impossible to use traditional powered wheelchairs independently by manually controlling these electrical devices. Intelligent wheelchairs are a very good solution to assist severely handicapped people who are unable to operate classical electrical wheelchair by themselves in their daily activities. This paper describes a development platform for intelligent wheelchairs called IntellWheels. The intelligent system developed may be added to commercial powered wheelchairs with minimal modifications in a very straightforward manner. The paper describes the concept and design of the platform, including the hardware and software, multimodal input interface and the intelligent wheelchair prototype developed to validate the approach. Preliminary results concerning automatic movement of the IntellWheels prototype are also described showing the autonomous movement capabilities of the prototype. © 2009 Springer-Verlag Berlin Heidelberg.

关键词： Wheelchairs

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A feature based technique for face recognition using Mexican hat wavelets

A feature based technique for face recognition using Mexican...

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IEEE Pacific Rim Conference on Communications, computers and Signal Processing

作者： Steven Gillan Pan Agathoklis Mohamed Seddeik Yasein Department of Electrical and Computer Engineering University of Victoria Victoria BC Canada Faculty of Computers and Informatics Suez-Canal University Ismailia Egypt

ISBN: (纸本)9781424445608

A new features based algorithm for face recognition is proposed. The algorithm is based on locating features on faces and finding the correspondence of these features between faces using an algorithm which is adopted from the works of Yasein and Agathoklis. The algorithm is using feature extraction through filtering with Mexican-hat wavelets and detection of correspondence of the feature points through comparison of Zernike moments. The transformation of the feature points between images is obtained using an iterative weighted least-squares algorithm which allows to eliminate outliers. The face recognition is based on the residual error between the feature points after transformation. The performance of the proposed method is evaluated using experiments with a face database and compared against existing techniques for face recognition. The results of experiments with varying pose and illumination conditions show that the proposed method performs well compared to existing feature based face recognition techniques.

关键词： Face recognition Lighting Feature extraction Iterative algorithms Filtering Face detection Robustness Principal component analysis Image registration informatics

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Security architecture based on multilayer distributed intrusion detection system

Security architecture based on multilayer distributed intrus...

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International Symposium on Applied Computational Intelligence and informatics ( SACI)

作者： Martin Chovanec Liberios Vokorkos Jan Perhac Institute of Computer Technology Technical University of Kosice Kosice Slovakia Faculty of Electrical engineering and informatics Technical University of Kosice Kosice Slovakia

The architecture of designed intrusion detection system is based on two layer hybrid model for event detection. System function is based on analysis parts of network flow in a real communication and offers processing of this data in a real time. The core of the first layer are detection sensors, which offer base processing based on statistical methods with direct interconnection to countermeasure module. Performance and accuracy of designed system is secured with central distributed processing, in which is used detection based on particular event description, which foregoing intrusion. The architecture presented in this article is a result of teamwork of Department of computer and informatics and Institute of computer technologies of Technical University of Kosice. Its partial results are processed in author's master thesis and research within the APPV-0073-07 project.

关键词： Nonhomogeneous media Intrusion detection Event detection Communication system security Data security Real time systems Statistical analysis Distributed processing computer architecture Teamwork

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On the way towards model for background of decisions on engineering objects in PLM

On the way towards model for background of decisions on engi...

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International Conference on Computational Cybernetics (ICCC)

作者： László Horváth Imre J. Rudas Gerhard Hancke John von Neumann faculty of Informatics Budapest Tech Hungary Department of Electrical Electronic and Computer Engineering University of Pretoria South Africa

This paper introduces a method for better communication between collaborating engineers and between engineer and entity generation processes at the definition of products in modeling systems. The authors recognized the importance of correct human-computer- human communication by using of product model as a special medium for engineers. In order to establish a product model that is appropriate for this purpose, they integrated all influencing effects on a product in an influencing space. In order to record content of influencing by engineers and other influencing persons, authorities, etc., the currently prevailing information based product model is completed by representation of information content. This paper emphasizes some relevant issues of information content. Definition of this contents starts from modeling of human intent. Intent model is consists of information about the owner of an intent, characteristics of that intent, and representation of content of intent in some form of knowledge. Information content is organized in the interconnected intent, behavior, and decision spaces. In a hierarchical system, intent space is at the highest and decision space is at the lowest level hierarchy assuring human intent based automation of decision making on engineering object in an improved product model.

关键词： Humans Decision making Recycling Context modeling Cybernetics informatics International collaboration Hierarchical systems Automation Content management

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Resource Retrieval Service to Enhance U-Learning Environment

Resource Retrieval Service to Enhance U-Learning Environment

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International Conference on Ubiquitous Information Technologies and Applications (ICUT)

作者： Neil Y. Yen Louis R. Chao Qun Jin Jianhua Ma Timothy K. Shih Department of Computer Science & Information Engineering Tamkang University Taipei Taiwan Faculty of Computer and Information Sciences Hosei University Japan Department of Human Informatics & Cognitive Sciences Waseda University Tokorozawa Japan Department of Computer Science and Information Engineering Asia University Taichung Taiwan

E-Learning makes it possible for learners to study at any time. With the improvement of ubiquitous technologies and corresponding devices, learners can conduct their learning activities without any limitations from the environment. Instructors can utilize various kinds of resources to create more plentiful learning materials for learners. In this situation, instructors or learners have to spend more time on collecting relevant resources for a specific purpose. In our previous works, we utilized the geographical information and RFID (Radio Frequency Identification) to develop an outdoor adventure game to support learning procedures. In this paper, we go further to propose and develop a resource retrieval mechanism to assist learners in collecting relevant learning resources. This mechanism can be regarded as a search procedure. We aim at providing search results in the order of relevant degree based on learners' current geographical information. It can make resource retrieval more efficient in ubiquitous learning environments.

关键词： Information filtering Electronic learning Information retrieval Radiofrequency identification Information filters Collaboration computer science Pervasive computing Conducting materials Global Positioning System

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Evaluating resistance of MCML technology to power analysis attacks using a simulation-based methodology

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作者： Regazzoni, Francesco Eisenbarth, Thomas Poschmann, Axel Großschädl, Johann Gurkaynak, Frank Macchetti, Marco Toprak, Zeynep Pozzi, Laura Paar, Christof Leblebici, Yusuf Ienne, Paolo ALaRI University of Lugano Lugano Switzerland Horst Görtz Institute for IT Security Bochum Germany University of Bristol Department of Computer Science Bristol United Kingdom Swiss Federal Institute of Technology ETH Zurich Switzerland Nagracard SA Cheseaux-sur-Lausanne Switzerland School of Engineering EPFL Lausanne Switzerland Faculty of Informatics University of Lugano Lugano Switzerland School of Computer and Communication Sciences EPFL Lausanne Switzerland

ISBN: (纸本)3642010032

This paper explores the resistance of MOS Current MoDe Logic (MCML) against attacks based on the observation of the power consumption. Circuits implemented in MCML, in fact, have unique characteristics both in terms of power consumption and the dependency of the power profile from the input signal pattern. Therefore, MCML is suitable to protect cryptographic hardware from Differential Power Analysis and similar side-channel attacks. In order to demonstrate the effectiveness of different logic styles against power analysis attacks, two full cores implementing the AES algorithm were realized and implemented with CMOS and MCML technology, and a set of different types of attack was performed using power traces derived from SPICE-level simulations. Although all keys were discovered for CMOS, MCML traces did not presents characteristic that can lead to a successful attack. ©Springer-Verlag Berlin Heidelberg 2009.

关键词： Side channel attack

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Semantic analytical reports: A framework for post-processing data mining results

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18th International Symposium on Methodologies for Intelligent Systems, ISMIS 2009

作者： Kliegr, Tomáš Ralbovský, Martin Svátek, Vojtech Šimunek, Milan Jirkovský, Vojtech Nemrava, Jan Zemánek, Jan University of Economics Prague Faculty of Informatics and Statistics Nám. Winstona Churchilla 4 130 67 Praha 3 Czech Republic Czech Technical University Dept. of Computer Science and Engineering Karlovo nam. 13 121 35 Praha 2 Czech Republic

ISBN: (纸本)3642041248

Intelligent post-processing of data mining results can provide valuable knowledge. In this paper we present the first systematic solution to post-processing that is based on semantic web technologies. The framework input is constituted by PMML and description of background knowledge. Using the Topic Maps formalism, a generic Data Mining ontology and Association Rule Mining ontology were designed. Through combination of a content management system and a semantic knowledge base, the analyst can enter new pieces of information or interlink existing ones. The information is accessible either via semi-automatically authored textual analytical reports or via semantic querying. A prototype implementation of the framework for generalized association rules is demonstrated on the PKDD'99 Financial Data Set. © 2009 Springer Berlin Heidelberg.

关键词： Data mining

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Image complexity matrix for pattern and target recognition, based on Fourier spectrum analysis

Image complexity matrix for pattern and target recognition, ...

引用

Optical Pattern Recognition XX

作者： Perju, Veacheslav Casasent, David Mardare, Igor Technical University of Moldova Department of Informatization Stefan Mare Av. 168 Chisinau MD-2012 Moldova Carnegie Mellon University Department of Electrical and Computer Engineering Pittsburgh PA 15213 United States Free International University of Moldova Faculty of Informatics and Engineering Vlaicu Pircalab Str. 52 Chisinau MD-2004 Moldova

ISBN: (纸本)9780819476067

It is proposed an image complexity matrix (IC), based on the analysis of the Fourier spectrum of the input image. It is described the method of IC calculation. It was carried out the determination of the necessary number of the image's pixels dependent on the image complexity. It is presented the optical - electronic processor for IC determination. It is analyzed the structure of the optical electronic computer system for pattern and target recognition. © 2009 SPIE.

关键词： Spectrum analysis

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Signal and system representations on hyperbolic groups: Beyond rational orthogonal bases

Signal and system representations on hyperbolic groups: Beyo...

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IEEE 7th International Conference on Computational Cybernetics, ICCC 2009

作者： Soumelidis, Alexandros Bokor, József Schipp, Ferenc Computer and Automation Research Institute Hungarian Academy of Sciences Kende 13-17 Budapest H-1111 Hungary Computer and Automation Research Institute Control Engineering Research Group Hungarian Academy of Sciences Kende 13-17 Budapest H-1111 Hungary Department of Numerical Analysis Faculty of Informatics Eötvös Loránd University Pazmany Peter Setany 1/C Budapest H-1117 Hungary

ISBN: (纸本)9781424453115

This paper investigates signal and system representations in special rational orthogonal bases of the Hardy space H2. These bases are derived from the Blaschke-group associated to the hyperbolic group SH(n) of matrices. Using the concept of the unitary group representations over H 2, and the voice-transform, specific hyperbolic wavelet constructions - Blaschke-wavelets and the associated Blaschke-Fourier transform are constructed. State space representations of systems over hyperbolic groups are discussed, too, with the purpose to explore the perspectives of elaborating a unified system theory upon this conceptual base. ©2009IEEE.

关键词： State space methods

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