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Spatial Tools for Managing Personal Information Collections

Spatial Tools for Managing Personal Information Collections

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Annual Hawaii International Conference on System sciences (HICSS)

作者： D. Bauer P. Fastrez J. Hollan Distributed Cognition and Human Computer Interaction Lab Department of Cognitive Science University of California San Diego USA

Dynapad is a development environment designed to support research prototyping of multiscale workspaces. In this paper we describe applications designed to facilitate visual access to and spatial organization of digital photo collections and personal libraries of PDF documents. The research objective is to explore a generalization of the notion of a "pile" as a foundation for a versatile suite of tools to provide unobtrusive assistance for organizing collections and other sensemaking activities. We detail the architecture underlying the applications, explain how it supports diverse functionality and interaction styles, and abstract a set of principles for designing spatial tools.

关键词： Information management Lenses Organizing Cognition human computer interaction Cognitive science Prototypes Application software Software libraries Electronic mail

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Flexible timeline user interface using constraints

Flexible timeline user interface using constraints

引用

Conference on human Factors in Computing Systems, CHI EA 2005

作者： Kurihara, Kazutaka Vronay, David Igarashi, Takeo Department of Computer Science University of Tokyo 7-3-1 Hongo Bunkyoku Tokyo 1130033 Japan Center for Interaction Design Microsoft Research Asia 3F Beijing Sigma Center No.49 Zhichun Road Haidian District Beijing 100080 China Department of Computer Science University of Tokyo / JST PRESTO 7-3-1 Hongo Bunkyoku Tokyo 1130033 Japan

ISBN: (纸本)1595930027

Authoring tools routinely include a timeline representation to allow the author to specify the sequence of animations and interactions. However, traditional static timelines are best suited for static, linear sequences (such MIDI sequencers) and do not lend themselves to interactive content. This forces authors to supplement their timelines with scripted actions which are not represented. Timelines also force frameaccuracy on the author, which interferes with rapid exploration of different designs. We present a redesign of the timeline in which users can specify the relative ordering and causality of events without specifying exact times or durations. This effectively enables users to "work rough" in time. We then implement a prototype and perform a user study to investigate its efficiency.

关键词： User interfaces

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Evaluating the feasibility of learning student models from data

Evaluating the feasibility of learning student models from d...

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AAAI-05 Workshop

作者： Jonsson, Anders Johns, Jeff Mehranian, Hasmik Arroyo, Ivon Woolf, Beverly Barto, Andrew Fisher, Donald Mahadevan, Sridhar Autonomous Learning Laboratory Department of Computer Science University of Massachusetts Amherst MA 01003 United States Center for Knowledge Communication Department of Computer Science University of Massachusetts Amherst MA 01003 United States Human Performance Laboratory Department of Mechanical and Industrial Engineering University of Massachusetts Amherst MA 01003 United States

ISBN: (纸本)1577352386

Recent work on intelligent tutoring systems has used Bayesian networks to model students' acquisition of skills. In many cases, researchers have hand-coded the parameters of the networks, arguing that the conditional probabilities of models containing hidden variables are too difficult to learn from data. We present a machine learning approach that uses Expectation-Maximization to learn the parameters of a dynamic Bayesian network with hidden variables. We test our methodology on data that was simulated using a state-based model of skill acquisition. Results indicate that it is possible to learn the parameters of hidden variables given enough sequential data of training sessions on similar problems. Copyright © 2005, American Association for Artificial Intelligence (***). All rights reserved.

关键词： Learning systems

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Participating in civil society: The case of networked communities

Participating in civil society: The case of networked commun...

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作者： Kavanaugh, Andrea Carroll, John M. Rosson, Mary Beth Reese, Debbie D. Zin, Than T. Department of Computer Science Virginia Tech 660 McBryde Hall Blacksburg V. United States Ctr. for Human-Computer Interaction Sch. of Info. Sci. and Technology Pennsylvania State Univ. Univ. P. United States Center for Educational Technologies Wheeling Jesuit University 316 Washington Ave. Wheeling W. United States

A community computer network facilitates civic participation by providing pervasive local resources online and by connecting people to local communication and discussion channels, public and non-profit organization leaders and members, and many other civic resources. We present findings from longitudinal data (two rounds between 2001 and 2002) of a stratified random survey of 100 households in a mature community network, the Blacksburg Electronic Village (BEV). We offer exploratory and confirmatory analyses, including a 'civic effects' model, that show demographic characteristics (education, age) and psychological factors (extroversion) explain staying informed, collective efficacy, group membership, activism, and using the Internet for civic and political purposes. The model further explains differences in respondents' involvement in local issues once they go online. Informed activists with multiple group memberships become more involved in local issues once going online, whereas informed non-activists become less involved once online. Our study suggests that in order to play a constructive role in creating a more civil society, community networks should explicitly pursue strategies that encourage community activism. One way to do this, given the strong role of association membership in activism, is for ISPs to offer bundled standard Internet applications at low cost to non-profit community groups (e.g. email for leadership, online discussion for members, web space). Community networks should also promote and support the use by local groups of innovative tools for non-experts, such as easy collaborative web-based tools for information production and collaboration. © 2004 Elsevier B.V. All rights reserved.

关键词： Social aspects

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Training of feature extractor via new cluster validity application to adaptive facial expression recognition

Training of feature extractor via new cluster validity appli...

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9th International Conference on Knowledge-Based Intelligent Information and Engineering Systems, KES 2005

作者： Lee, Sang Wan Kim, Dae-Jin Kim, Yong Soo Bien, Zeungnam Department of Electrical Engineering and Computer Science KAIST Daejeon 305-701 Korea Republic of Human-friendly Welfare Robot System Engineering Research Center KAIST Daejeon 305-701 Korea Republic of Division of Computer Engineering Daejeon University Daejeon 300-716 Korea Republic of

ISBN: (纸本)354028897X

A lot of researches on classifiers, which can perform well with a given set of feature vectors, have been done. However, researches on feature vectors, which extract better feature vectors automatically, have not been done very much. We face two problems when we consider feature extraction process. One is how we can make a good feature extractor, and the other is what more separable features are. In this paper, we solved these two problems by proposing feature extractor-training methodology that uses new cluster validity as an objective function. By combining feature extractor to Fuzzy Neural Network Model, we achieve on-line adaptation capability as well as optimized feature extraction. The result shows recognition rate of 97% when on-line adaptation is being done. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Face recognition

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Robust and accurate cancer classification with gene expression profiling

Robust and accurate cancer classification with gene expressi...

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Proceedings of the IEEE Computational Systems Bioinformatics Conference, CSB

作者： Haifeng Li Keshu Zhang Tao Jiang Department of Computer Science University of California Riverside CA USA Human Interaction Research Laboratory Motorola Inc. Tempe AZ USA

ISBN: (纸本)0769523447

Robust and accurate cancer classification is critical in cancer treatment. Gene expression profiling is expected to enable us to diagnose tumors precisely and systematically. However, the classification task in this context is very challenging because of the curse of dimensionality and the small sample size problem. In this paper, we propose a novel method to solve these two problems. Our method is able to map gene expression data into a very low dimensional space and thus meets the recommended samples to features per class ratio. As a result, it can be used to classify new samples robustly with low and trustable (estimated) error rates. The method is based on linear discriminant analysis (LDA). However, the conventional LDA requires that the within-class scatter matrix S/sub w/ be nonsingular. Unfortunately, S/sub w/ is always singular in the case of cancer classification due to the small sample size problem. To overcome this problem, we develop a generalized linear discriminant analysis (GLDA) that is a general, direct, and complete solution to optimize Fisher's criterion. GLDA is mathematically well-founded and coincides with the conventional LDA when S/sub w/ is nonsingular. Different from the conventional LDA, GLDA does not assume the nonsingularity of S/sub w/, and thus naturally solves the small sample size problem. To accommodate the high dimensionality of scatter matrices, a fast algorithm of GLDA is also developed. Our extensive experiments on seven public cancer datasets show that the method performs well. Especially on some difficult instances that have very small samples to genes per class ratios, our method achieves much higher accuracies than widely used classification methods such as support vector machines, random forests, etc.

关键词： Robustness Cancer Gene expression Linear discriminant analysis Neoplasms computer science humans Scattering Support vector machines Support vector machine classification

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Generation of 3D face model using free-form deformation

Generation of 3D face model using free-form deformation

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16th IASTED International Conference on Modelling and Simulation

作者： Yahara, Hiroki Fukui, Yukio Nishihara, Seiichi Mochimaru, Masaaki Kouchi, Makiko Department of Computer Science University of Tsukuba 1-1-1 Tennodai Tsukuba-shi Ibaraki Japan Digital Human Research Center National Institute of Advanced Industrial Science and Technology 2-41-6 Aomi Koto-ku Tokyo Japan

Designing properly fitting industrial products for human wear requires full use of anatomical landmarks and the human form. To automatically extract information from point cloud data on the body surface obtained by a 3D scanner, we propose deforming the standard shape model with landmarks into a measured shape of unknown landmark positions using free-form deformation. A check of the accuracy of this method confirmed it to be close to practical use.

关键词： computer simulation

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Choosing friends carefully: Allies for critical computing 05

Choosing friends carefully: Allies for critical computing

引用

4th Decennial Aarhus Conference on Critical Computing - Between Sense and Sensibility

作者： Dearden, Andy Walker, Steve Watts, Leon Communication and Computing Research Centre Sheffield Hallam University Sheffield S1 1WB United Kingdom School of Information Management Leeds Metropolitan University Headingley Leeds LS6 3QS United Kingdom Human-Computer Interaction Group Department of Computer Science University of Bath Bath BA2 7AY United Kingdom

ISBN: (纸本)1595932038

In this paper, we argue firstly that researchers in critical computing should address the specific information and communication technology (ICT) needs and activities of those agencies concerned with emancipatory issues. Secondly, we argue that a critical perspective, explicitly foregrounding empowerment and emancipatory concerns, forms a basis for emphasising the practice of individuals, groups and organisations, rather than purely focusing on organisational form in social *** discuss this context of social action, identifying some relevant ICT-related challenges. We identify three themes that highlight factors that differentiate ICT support for social action groups from the setting of conventional business and service organisations: Free / Libre Open-Source Software, techniques and technologies for engagement through storytelling, and learning and evaluation in social action. © 2005 ACM.

关键词： Open systems

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Context awareness via a single device-attached accelerometer during mobile computing 05

Context awareness via a single device-attached accelerometer...

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7th International Conference on human computer interaction with Mobile Devices and Services, MobileHCI 05

作者： Yi, Ji Soo Choi, Young Sang Jacko, Julie A. Sears, Andrew Laboratory of Human Computer Interaction and Health Care Informatics School of Industrial and Systems Engineering Georgia Institute of Technology 765 Ferst Drive NW Atlanta GA 30332 United States Interactive Systems Research Center Information Systems Department UMBC 1000 Hilltop Circle Baltimore MD 21250 United States

ISBN: (纸本)1595930892

Interest in context-aware computing has expanded the use of sensing technologies. The accelerometer is one of the most widely used sensors for capturing context because it is small, inexpensive, lightweight, and self-operable. In efforts to obtain behavioral patterns, many studies have reported the use of multiple accelerometers attached to the human body. However, this is difficult to implement in real-life situations and may not fully address the context of user interaction. In contrast, the present study employed a single tri-axial accelerometer attached to a handheld computing device instead of to a user. The objective was to determine what contextual information could be obtained from this more feasible, albeit limited, source of acceleration data. Data analyses confirmed that changes in both mobility and lighting conditions induced statistically significant differences in the output of the accelerometer. Copyright 2005 ACM.

关键词： Accelerometers

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Design and implement the stimuli capsule at in-vitro experiment

Design and implement the stimuli capsule at in-vitro experim...

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TENCON 2005 - 2005 IEEE Region 10 Conference

作者： Woo, S.H. Yoon, K.W. Lee, J.H. Moon, Y.K. Won, C.H. Kim, T.W. Choi, H.C. Cho, J.H. School of Electronic Engineering and Computer Science Kyungpook National University Korea Republic of Department of Computer Control and Electrical Engineering Kyungil University Korea Republic of College of Veterinary Medicine Dept. of Physiology Kynugpook National University Advanced Research Center for Recovery of Human Sensibility Kyungpook National University Korea Republic of

ISBN: (纸本)0780393112

Recently, the capsule endoscope has been developed to observe image from the inside intestine. Such a capsule endoscope does not have locomotion or hold by it self. To get proper diagnosis and meditation, it is necessary to control capsule from outside to enable to guide locomotion. The designed and implemented capsule has feasibility to contracts the small intestine by electrical stimulus from stimulus pad. When the small intestine is contracted by electrical stimulus, the capsule can move to opposite direction which can boost moving speed of the capsule or change moving direction. The implemented stimuli capsule always monitors excessive energy transmit and automatically shut down electrical stimuli to make more secure. Also the stimuli capsule goes to stand by mode to save battery, and reset by comparator circuit which is connected to two stimulus pad. To verify the design and implement stimuli capsule, in-vitro experiments are performed with pig's small intestine.

关键词： Medical imaging

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