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Sparse KPCA for feature extraction in speech recognition

Sparse KPCA for feature extraction in speech recognition

引用

2005 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP '05

作者： Lima, A. Zen, H. Nankaku, Y. Tokuda, K. Kitamura, T. Resende, F.G. Nagoya Institute of Technology Department of Computer Science and Engineering Nagoya 466-8555 Japan Federal University of Rio de Janeiro Dept. of Electronics and Computer Engineering/EPoli Program of Electrical Engineering/COPPE Rio de Janeiro 21945-970 Brazil

ISBN: (纸本)0780388747

This paper presents an analysis of the applicability of Sparse Kernel Principal Component Analysis (SKPCA) for feature extraction in speech recognition, as well as, a proposed approach to make the SKPCA technique realizable for a large amount of training data, which is an usual context in speech recognition systems. Although the KPCA (Kernel Principal Component Analysis) has proved to be an efficient technique for being applied to speech recognition, it has the disadvantage of requiring training data reduction, when its amount is excessively large. The standard approach to perform this data reduction is to randomly choose frames from the original data set, which does not necessarily provide a good statistical representation of the original data set. In order to solve this problem a likelihood related re-estimation procedure was applied to the KPCA framework, thus creating the SKPCA. The experimental results show the efficiency of SKPCA technique with the proposed approach over the KPCA with the standard sparse solution using randomly chosen frames and the standard feature extraction techniques. © 2005 IEEE.

关键词： Speech recognition

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A hybrid HMM/DPA adaptive gesture recognition method

引用

First International Symposium on Advances in Visual Computing, ISVC 2005

作者： Rajko, Stjepan Qian, Gang Dept. of Computer Science and Engineering Arizona State University Tempe AZ 85287 United States Dept. of Electrical Engineering Arizona State University Tempe AZ 85287 United States Arts Media and Engineering Program Arizona State University Tempe AZ 85287 United States

ISBN: (纸本)3540307508

We present a hybrid classification method applicable to gesture recognition. The method combines elements of Hidden Markov Models (HMM) and various Dynamic programming Alignment (DPA) methods, such as edit distance, sequence alignment, and dynamic time warping. As opposed to existing approaches which treat HMM and DPA as either competing or complementing methods, we provide a common framework which allows us to combine ideas from both HMM and DPA research. The combined approach takes on the robustness and effectiveness of HMMs and the simplicity of DPA approaches. We have implemented and successfully tested the proposed algorithm on various gesture data. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Gesture recognition

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3D vision sensing for grasp planning: A new, robust and affordable structured light approach

3D vision sensing for grasp planning: A new, robust and affo...

引用

2005 IEEE International Conference on Robotics and Automation

作者： Gockel, Tilo Ahlmann, Johannes Dillmann, Rüdiger Azad, Pedram D-76131 Karlsruhe Germany HRCN CNS ATR Computational Neuroscience Laboratories Kyoto 619-0288 Japan Dept. of Computer Science University of Karlsruhe c/o Technologiefabrik Haid-und-Neu-Strasse 12 D-76131 Karlsruhe Germany

ISBN: (纸本)078038914X

In this paper we present a new approach to 3D shape acquisition. This implementation enables a robot arm to move the scan unit over the object without the scan unit being tracked. The chosen structured light approach uses an initially unknown white noise pattern that can easily be projected with any fixed pattern projection system. Object points are acquired on the basis of finding correspondences in the pattern in the camera image of the current scene. This is achieved by using a fast SSD correlation algorithm. In the current test setup we are using a standard video beamer and a standard digital camera, but we have also set up a scan head for fixation on a robots' wrist. The special requirements of this miniaturized system will be explained as well as our implementation. Our approach reduces hardware complexity to a minimum using only one calibrated camera and one calibrated fixed pattern projector. In this paper we present the whole system also including the calibration procedure. The focus will be on the hardware setup, but we also give an introduction to the software methods used. ©2005 IEEE.

关键词： computer vision

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Elementary science classroom learning with wireless response devices - Implementing active and experiential learning

Elementary science classroom learning with wireless response...

引用

IEEE International Workshop on Wireless and Mobile Technologies in Education, WMTE 2005

作者： Chen, Yu-Fen Liu, Chen-Chung Yu, Ming-Hung Chang, Sung-Bin Lu, Yun-Chen Chan, Tak-Wai Dept. of Computer Science Information Engineering National Central University Taiwan Graduate Institute of Network Learning Technology National Central University Taiwan Degree Program of E-Learning College of Science National Chiao Tung University Taiwan Chu-Wei Elementary School Taiwan

ISBN: (纸本)0769523854

Active learning enables learners to actively engage in learning. Learning not only transfers material to students for learning, but also encourages greater mental engagement and more extensive student-student and student-instructor interaction than does a typical lecture class. Peer Instruction (PI) engages students in active learning by achieving continuous instructor-student interaction in a physics lecture. However, the methodologies and the effectiveness of implementing PI for elementary school students have seldom been clarified. This study explores the possibility of adopting PI in an elementary science classroom. The research considerations of the study are as follows: (1) how wireless technology can enhance PI in elementary science classroom;(2) how a teacher can engage students in pre-class reading, and (3) whether elementary school students have sufficient social skills to perform a PI discussion? These questions are examined by observing how the PI pedagogical model worked with a wireless response system in elementary science classroom. Based on the observation, this study also proposes a way of improving the PI learning experience of elementary school students by adding experiments and observations during peer discussion to explain concepts and phenomena in physics. © 2005 IEEE.

关键词： Learning systems

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The Semantic Web approach in location based services

The Semantic Web approach in location based services

引用

International Conference on Computational science and Its Applications - ICCSA 2005

作者： Kim, Jong-Woo Kim, Ju-Yeon Hwang, Hyun-Suk Park, Sung-Seok Kim, Chang-Soo Park, Sung-Gi Pukyong National University Interdisciplinary Program of Information Security Korea Republic of Pukyong National University Institute of Engineering Research Korea Republic of Pukyong National University Dept. of Computer Science Korea Republic of JC System Inc. Korea Republic of

In recent years, there has been growing interest in Location Based Service (LBS). However, the existing LBS has some limitations in the management of dynamic location-dependent contents and interoperability between the different platforms and various domains. We have focused on how LBS applications obtain integrated, dynamic, and sensitive contents on the different domains. We approach the Semantic Web technologies to resolve these issues. In this paper, we design the architecture to combine the Semantic Web technologies with the LBS and implement the prototype to describe the Semantic LBS. © Springer-Verlag Berlin Heidelberg 2005.

关键词： World Wide Web

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A layered scripting language technique for avatar behavior representation and control

A layered scripting language technique for avatar behavior r...

引用

13th International Conference on AIS 2004

作者： Kim, Jae-Kyung Sohn, Won-Sung Cho, Beom-Joon Lim, Soon-Bum Choy, Yoon-Chul Dept. of Computer Science Yonsei University Shinchon-dong Seodaemun-gu 120-749 Seoul Korea Republic of Computational Design Program School of Architecture Carnegie Mellon University Pittsburgh PA 15213 United States Department of Computer Engineering Chosun University Kwangju Korea Republic of Department of Multimedia Science Sookmyung Women's University Chungpa-dong Yongsan-gu 140-742 Seoul Korea Republic of

The paper proposes a layered scripting language technique for representation and control of avatar behavior for simpler avatar control in various domain environments. We suggest three layered architecture which is consisted of task-level behavior, high-level motion, and primitive motion script language. These layers brides gap between application domain and implementation environments, so that end user can control the avatar through easy and simple task-level scripting language without concerning low-level animation and the script can be applied various implementations regardless of application domain types. Our goal is to support flexible and extensible representation and control of avatar behavior by layered approach separating application domains and implementation tools. © Springer-Verlag Berlin Heidelberg 2005.

关键词： computer programming languages

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A guideline for parameter design of body surface laplacian electrodes and its application in EGG detection

A guideline for parameter design of body surface laplacian e...

引用

2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005

作者： He, Feng Li, Gang Lin, Ling Besio, Walter G. Lu, Stephen C.-Y. Inspiring Technical Laboratory College of Precision Instruments and Opto-Electronics Engineering Tianjin University Tianjin 300072 China Biomedical Engineering Program Center for Biomedical Engineering and Rehabilitation Science Louisiana Tech University LO United States Dept. of Aerospace and Mechanical Engineering Computer Science and Industrial and Systems Engineering University of Southern California CA 90089-1453

ISBN: (纸本)0780387406

The influence of dimension parameters on the performance of Body-surface Laplacian electrodes is studied in this paper. Some rules about the parameter optimization design are presented. The investigation suggests that the effective radius b should be equal to the inner radius of the ring electrode in order to reduce the relative error. Besides, in the presence of weak bioelectrical signals, reasonably increasing b would be helpful to improve SNR. Furthermore, an evaluation method based on these principles is prompted, as an instance of which, feasibility of introducing Surface Laplacian technique into EGG exploration is discussed. © 2005 IEEE.

关键词： Product design

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A dialogue-based information retrieval assistant using shallow NLP techniques in online sales domains

A dialogue-based information retrieval assistant using shall...

引用

作者： Kim, Harksoo Seon, Choong-Nyoung Seo, Jungyun Diquest Inc. Sindo B/D 1604-22 Seocho-dong Seocho-gu Seoul 137-070 Korea Republic of Dept. of Computer Science Program of Integrated Biotechnology Sogang University Sinsu-dong 1 Mapo-gu Seoul 121-742 Korea Republic of University of Massachusetts Amherst United States

Most of commercial websites provide customers with menu-driven navigation and keyword search. However, these inconvenient interfaces increase the number of mouse clicks and decrease customers' interest in surfing the websites. To resolve the problem, we propose an information retrieval assistant using a natural language interface in online sales domains. The information retrieval assistant has a client-server structure;a system connector and a NLP (natural language processing) server. The NLP server performs a linguistic analysis of users' queries with the help of coordinated NLP agents that are based on shallow NLP techniques. After receiving the results of the linguistic analysis from the NLP server, the system connector interacts with outer information provision systems such as conventional information retrieval systems and relational database management systems according to the analysis results. Owing to the client-server structure, we can easily add other information provision systems to the information retrieval assistant with trivial modifications of the NLP server. In addition, the information retrieval assistant guarantees fast responses because it uses shallow NLP techniques. In the preliminary experiment, as compared to the menu-driven system, we found that the information retrieval assistant could reduce the bothersome tasks such as menu selecting and mouse clicking because it provides a convenient natural language interface. Copyright © 2005 The Institute of Electronics, Information and Communication Engineers.

关键词： Natural language processing systems

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Benchmark development for comparing digital instrumentation and control system reliability modeling approaches

Benchmark development for comparing digital instrumentation ...

引用

American Nuclear Society International Topical Meeting on Probabilistic Safety Analysis, PSA 05

作者： Kirschenbaum, Jason Bucci, Paolo Stovsky, Michael Aldemir, Tune Arndt, Steven A. Ohio State University Dept. of Computer Science and Engineering 395 Dreese Labs. 2015 Neu Ave. Columbus OH 43210 Ohio State University Nuclear Engineering Program Bldg. 1 650 Ackerman Road Columbus OH 43202 U.S. Nuclear Regulatory Commission Office of Nuclear Regulatory Research Washington DC 20555

ISBN: (纸本)089448690X

In nuclear power plants, there is an accelerating trend to upgrade and replace analog instrumentation and control systems with digital systems. This transition from analog to digital I&C systems is due to their added capabilities and their potential to improve reliability and safety of the corresponding plants. As this replacement process continues, one or more methodologies to address digital I&C system reliability are needed to quantify the risk introduced into the plants by such systems. In reviewing the proposed methodologies, it has become apparent that there is no benchmark system available to be used as the basis for methodology comparison. A set of preliminary requirements for a benchmark system is presented to evaluate objectively methodologies available for the reliability modeling of digital I&C systems in nuclear power plants. These requirements will provide a basis for the future development of a benchmark system.

关键词： Benchmarking

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Reduced-order model-based feedback controller design for subsonic cavity flows

Reduced-order model-based feedback controller design for sub...

引用

43rd AIAA Aerospace sciences Meeting and Exhibit

作者： Yuan, X. Caraballo, E. Yan, P. Özbay, H. Serrani, A. DeBonis, J. Myatt, J.H. Samimy, M. Collaborative Center of Control Science Ohio State University United States Department of Electrical and Computer Engineering Department of Mechanical Engineering United States Bilkent Univ. Dept. of Electrical and Electronics Eng. Ankara Turkey NASA Glenn's Quiet Aircraft Technology Program United States Air Force Research Laboratory Air Vehicles Directorate WPAFB United States

This paper explores feedback controller design for cavity flows based on reduced-order models derived using Proper Orthogonal Decomposition (POD) along with Galerkin projection method. Our preliminary analysis shows that the equilibrium of the POD model is unstable and a static output feedback controller cannot stabilize it. We develop Linear Quadratic (LQ) optimal state feedback controllers and LQ optimal observers for the linearized models. The linear controllers and observers are applied to the nonlinear system using simulations. The controller robustness is numerically tested with respect to different POD models generated at different forcing frequencies. An estimation for the region of attraction of the linear controllers is also provided.

关键词： Subsonic flow

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