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第一届自然语言处理联合学术会议

作者： Grace NGAI Marine CARPUAT Hong Kong Polytechnic University Department of Computing Kowloon Hong Kong Human Language Technology Center HKUST Department of Computer Science University of Science and Technology Clear Water Bay Hong Kong

We describe a broadly-applicable conservative error correcting model, N-fold Templated Piped Correction (NTPC), that consistently improves the accuracy of existing high-accuracy base models. Under circumstances where most obvious approaches actually reduce accuracy more than they improve it, NTPC nevertheless comes with little risk of accidentally degrading performance. NTPC is particularly well suited for natural language applications involving high-dimensional feature spaces, such as bracketing and disambiguation tasks, since its easily customizable templatedriven learner allows efficient search over the kind of complex feature combinations that have typically eluded the base models. We show empirically that NTPC yields small but consistent accuracy gains on top of even high-performing models like boosting. We also give evidence that the various extreme design parameters in NTPC are indeed necessary for the intended operating range, even though they diverge from usual practice.

关键词： N-fold Templated Piped Correction

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Discovery of the tri-edge inequality with binary vector dissimilarity measures

Discovery of the tri-edge inequality with binary vector diss...

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International Conference on Pattern Recognition

作者： Bin Zhang S. Srihari Department of Human Genetics David Geffen School of Medicine Department of Biostatistics School of Public Health University of California Los Angeles USA Center of Excellence for Document Analysis and Recognition Department of Computer Science and Engineering State University of New York University at Buffalo USA

In certain spaces using some distance measures, the sum of any two distances is always bigger than the third one. Such a special property is called the tri-edge inequality (TEI). In this paper, the tri-edge inequality characterizing several binary distance measures is mathematically proven and experimentally verified, and the implications of TEI are discussed as well.

关键词： Pattern recognition

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Tactile gloves for autonomous grasping with the NASA/DARPA Robonaut

Tactile gloves for autonomous grasping with the NASA/DARPA R...

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IEEE International Conference on Robotics and Automation (ICRA)

作者： T.B. Martin R.O. Ambrose M.A. Diftler R. Platt M.J. Butzer Automation Robotics and Simulation Division NASA-Johnson Space Center Houston TX USA Department of Computer Science University of Massachusetts Amherst MA USA Human Space Flight Programs Oceaneering Space Systems Houston TX USA

Tactile data from rugged gloves are providing the foundation for developing autonomous grasping skills for the NASA/DARPA Robonaut, a dexterous humanoid robot. These custom gloves compliment the human like dexterity available in the Robonaut hands. Multiple versions of the gloves are discussed, showing a progression in using advanced materials and construction techniques to enhance sensitivity and overall sensor coverage. The force data provided by the gloves can be used to improve dexterous, tool and power grasping primitives. Experiments with the latest gloves focus on the use of tools, specifically a power drill used to approximate an astronaut's torque tool.

关键词： NASA humans Grasping Robotics and automation humanoid robots Robot sensing systems Force sensors Sensor phenomena and characterization Control systems Orbital robotics

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Constraint-based contact analysis between deformable objects

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4th International Conference on Computational science, ICCS 2004

作者： Hong, Min Choi, Min-Hyung Lee, Chris Bioinformatics University of Colorado Health Sciences Center 4200 E. 9th Avenue Campus Box C-245 DenverCO80262 United States Department of Computer Science and Engineering University of Colorado at Denver Campus Box 109 PO Box 173364 DenverCO80217 United States Center for Human Simulation University of Colorado Health Sciences Center P.O. Box 6508 Mail Stop F-435 AuroraCO80045 United States

ISBN: (纸本)3540221158

The key to the successful simulation of deformable objects is to model the realistic behavior of deformation when they are influenced by intricate contact conditions and geometric constraints. This paper describes constraint- based contact modeling between deformable objects using a nonlinear finite element method. In contrast to the penalty force based approaches, constraint- based enforcement of contact provide accuracy and freedom from finding proper penalty coefficients. This paper is focused on determining contact regions and calculating reaction forces at appropriate nodes and elements within the contact regions. The displacement and deformation of all nodes are dynamically updated based on the contact reaction forces. Our constraint based contact force computation method guarantees tight error bound at the contact regions and maintains hard constraints without overshoot or oscillation at the boundaries. In addition, the proposed method doesn't require us to choose proper penalty coefficients, thus greater numerical stability can be achieved and generally large integration steps can be utilized for the ODE solver. Contact conditions are formulated as nonlinear equality and inequality constraints and the force computation is cast into a nonlinear optimization problem. Our rigidto- deformable and deformable-to-deformable contact simulation demonstrates that the non-penetration constraints are well maintained. © Springer-Verlag Berlin Heidelberg 2004.

关键词： Deformation

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Implementation of miniaturized microphone unit for implantable hearing aid and its characteristics

Implementation of miniaturized microphone unit for implantab...

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Annual Conference of Industrial Electronics Society

作者： Min-Kyu Kim Ji-Hun Han Young-Ho Yoon Byung-Seop Song Jin-Ho Cho Department of Biological & Medical Engineering School of Medicine Kyungpook National University Daegu South Korea School of Electrical Engineering & Computer Science Kyungpook National University Daegu South Korea Advanced Research Center for Recovery of Human Sensibility Kyungpook National University Daegu South Korea

ISBN: (纸本)0780387309

In this paper the miniaturized microphone unit that can be utilized to the implantable middle car and inner ear is designed and implemented. The implantable microphone unit that planed to set up in the center of the pinna has been designed to ensure the necessary dynamic range and to improve the sensitivity of microphone unit. In addition to, the microphone unit is miniaturized and its biocompatibility of human body is considered. The microphone unit is composed of a minimized electric microphone, a titanium case which has 5.3 mm diameter and 3.7 mm height, a SUS316L vibrating membrane of 10 /spl mu/m thickness which is touched with a hypodermic tissue and adopted for the less attenuation of microphone sensitivity. Through the experiments of the fabricated microphone unit, it is verified that the implemented microphone unit operates up to the bandwidth of 5 kHz without declining of sensitivity in the 6 mm hypodermic tissue.

关键词： Microphones Auditory system Ear Hearing aids Deafness humans Signal processing Bones Dynamic range Organizing

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Design of implantable wireless biomedical signals telemetry system

Design of implantable wireless biomedical signals telemetry ...

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Annual Conference of Industrial Electronics Society

作者： Young-Ho Yoon Eui-Sung Jung Ho-Kyung Kang Min-Kyu Kim Byung-Seop Song Jin-Ho Cho Advanced Research Center for Recovery of Human Sensibility Kyungpook National University Daegu South Korea School of Electrical Engineering & Computer Science Kyungpook National University Daegu South Korea Department of Biological & Medical Engineering School of Medicine Kyungpook National University Daegu South Korea

ISBN: (纸本)0780387309

For the measurement of biomedical signals in the under body, a miniaturized implantable wireless telemetry system is implemented. This overall system consists of a charging system, an IR receiver, a multi-channel signal processor and a FM transmitter. All the parts are packed in the titanium case of which size is 50(L)/spl times/27(W)/spl times/7(H) mm. To control the implanted device at the external body and utilize the advantages of the simplification of circuit structure and the reduction of power consumption, an infrared wireless communication method has been adopted. The implements system uses a unique data protocol to prevent the interferences from other infrared remote control of the household appliances. The surface of the implanted device has been coated by biocompatible material to be implanted in the body. This system can be applied to measurements system of various kinds of bio-signals such as bio-electrical, bio-chemical and bio-mechanical signals, including EMG, ECG, insulin level, blood pressure signal etc.

关键词： Signal design Telemetry Biomedical measurements Communication system control Optical receivers Signal processing Transmitters Titanium Circuits Energy consumption

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Design and Implementation of a Multinational computerized Patient Survey: The European Paediatric Orthopaedic Society Down Syndrome Survey

TheScientificWorldJournal

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TheScientificWorldJournal 2004年第1期4卷 256-263页

作者： David M Steinberg Moshe Kaplan Joav Merrick Shlomo Wientroub Department of Statistics and Operations Research Tel Aviv University Israel. School of Computer Science Tel Aviv University Israel. National Institute of Child Health and Human Development Office of the Medical Director Division for Mental Retardation Ministry of Social Affairs Jerusalem and Zusman Child Development Center and Divisions of Pediatrics and Community Health Ben Gurion University Beer-Sheva Israel. Department of Pediatric Orthopaedics Dana Children's Hospital Sourasky Medical Center Sackler School of Medicine Tel Aviv University Israel.

In 1997, the European Paediatric Orthopaedic Society (EPOS) initiated an international survey of musculoskeletal problems in individuals with Down syndrome. The goals of the study were far-reaching and ambitious in order to obtain a clear picture of the variety of orthopedic problems associated with Down syndrome, to relate their occurrence to other medical conditions, and to record and compare methods of treatment. The survey was to be international in scope, including orthopedic surgeons and departments across Europe and outside Europe. The study was coordinated from the Tel Aviv University in Israel as a multicenter study using electronic technology. This paper describes the organization and implementation of the EPOS Down Syndrome Survey, with special emphasis on the sophisticated electronic data entry instrument that was developed especially for the survey. It is concluded that computerized data entry forms like the one that we developed for the EPOS Down Syndrome Survey are valuable tools for medical surveys. They are especially important for multicenter and multinational studies.

关键词： Down syndrome Israel human development multinational computerized patient survey musculoskeletal problems pediatric orthopedics public health

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Information-rich virtual environments: Theory, tools, and research agenda 03

Information-rich virtual environments: Theory, tools, and re...

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2003 ACM Symposium on Virtual Reality Software and Technology, VRST 2003

作者： Bowman, Doug A. North, Chris Chen, Jian Polys, Nicholas F. Pyla, Pardha S. Yilmaz, Umur Department of Computer Science Center for Human-Computer Interaction Virginia Tech BlacksburgVA United States

ISBN: (纸本)1581135696

Virtual environments (VEs) allow users to experience and interact with a rich sensory environment, but most virtual worlds contain only sensory information similar to that which we experience in the physical world. Information-rich virtual environments (IRVEs) combine the power of VEs and information visualization, augmenting VEs with additional abstract information such as text, numbers, or graphs. IRVEs can be useful in many contexts, such as education, medicine, or construction. In our work, we are developing a theoretical foundation for the study of IRVEs and tools for their development and evaluation. We present a working definition of IRVEs, a discussion of information display and interaction in IRVEs. We also describe a software framework for IRVE development and a testbed enabling evaluation of text display techniques for IRVEs. Finally, we present a research agenda for this area. Copyright © 2003 ACM.

关键词： Virtual reality

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Classroom BRIDGE: Using collaborative public and desktop timelines to support activity awareness

Classroom BRIDGE: Using collaborative public and desktop tim...

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UIST'03: Proceedings of the 16th Annual ACM Symposium on User Interface Software and Technology

作者： Ganoe, Craig H. Somervell, Jacob P. Neale, Dennis C. Isenhour, Philip L. Carroll, John M. Rosson, Mary Beth McCrickard, D. Scott Center for Human Computer Interaction Computer Science Department Virginia Polytechnic Institute and State University Blacksburg VA 24061

Classroom BRIDGE supports activity awareness by facilitating planning and goal revision in collaborative, project-based middle school science. It integrates large-screen and desktop views of project times to support incidental creation of awareness information through routine document transactions, integrated presentation of awareness information as part of workspace views, and public access to subgroup activity. It demonstrates and develops an object replication approach to integrating synchronous and asynchronous distributed work for a platform incorporating both desktop and large-screen devices. This paper describes an implementation of these concepts with preliminary evaluation data, using timeline-based user interfaces. © 2003 ACM.

关键词： computer supported cooperative work

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Frameworks for sharing knowledge toward a professional language for teaching practices 36

Frameworks for sharing knowledge toward a professional langu...

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36th Annual Hawaii International Conference on System sciences, HICSS 2003

作者： Carroll, J.M. Rosson, M.B. Dunlap, D. Isenhour, P. Center for Human-Computer Interaction Department of Computer Science Virginia Tech. BlacksburgVA24061-0106 United States

ISBN: (纸本)0769518745

In many organizations, collaborating with peers, sharing resources, and codifying know-how are not typical facets of work activity. For such organizations, knowledge management support must help people identify and orient to opportunities for collaboration and sharing, articulate values and best practices, and assimilate sharing knowledge as an everyday experience. We discuss a participatory design project in which we are exploring these issues in the design of knowledge management support for public school teachers, leveraging a community networking infrastructure and everyday representational frameworks for knowledge. © 2003 IEEE.

关键词： Knowledge management

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