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International Symposium on Image and Signal processing and Analysis

作者： R.S. Stankovic M. Stankovic J. Astola K. Egiazarian Department of Computer Science Nis Serbia Int. Center for Signal Processing Tampere University of Technology Tampere Finland

ISBN: (纸本)9539676940

We extend various bit-level and word-level expressions for representation of switching functions, such as SOP, Reed-Muller expressions, arithmetic, and Walsh expressions, to functions used in Fibonacci interconnection topologies. The corresponding Fibonacci decision diagrams (FibDD) are used as graphic representations of these expressions. At the same time, FibDD are used as a data structure to efficiently calculate coefficients in the introduced expressions, and to perform design of related networks. In this way, we provide a base to extend the application of powerful CAD design tools for switching functions to functions in Fibonacci interconnection topologies.

关键词： Mathematics Signal processing Signal synthesis Network topology Data structures Power system interconnection Graphics Boolean functions Circuit topology computer science

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Bit-level and word-level polynomial expressions for functions in Fibonacci interconnection topologies

Bit-level and word-level polynomial expressions for function...

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International Symposium on Multiple-Valued Logic

作者： R.S. Stankovic M. Stankovic J. Astola K. Egiazarian Department of Computer Science Nis Yugoslavia Int. Center for Signal Processing Tampere University of Technology Tampere Finland

ISBN: (纸本)0769510833

In this paper, we extend various Boolean representations for switching functions, as SOPs, Reed-Muller expressions, Kronecker and Pseudo Kronecker ANDEXOR expressions, to functions used in Fibonacci interconnection topologies. Then, we extend the world-level expressions, as arithmetic expressions, and Walsh expressions, to these functions. We introduce the corresponding decision diagrams as graphic representations of these bit-level and word-level expressions. In this way, we provide a base to extend the application of powerful CAD design tools using polynomial expressions and DDs for switching functions to functions in Fibonacci interconnection topologies.

关键词： Polynomials Arithmetic Data structures Circuit topology Graphics Design automation Boolean functions Signal design computer science Signal processing

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Circuit realization of spectral transforms in Fibonacci interconnection topologies

Circuit realization of spectral transforms in Fibonacci inte...

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IEEE International Symposium on Circuits and Systems (ISCAS)

作者： M. Stankovic R.S. Stankovic J. Astola K. Egiazarian Department of Computer Science Nis Yugoslavia Int. Center for Signal Processing Tampere University of Technology Tampere University of Technology Tampere Finland

ISBN: (纸本)0780366859

We present a method for design of networks for realization of functions represented by Fibonacci decision diagrams (FibDDs) and for calculation of the generalized Fibonacci spectral transforms. For a given function f, the structure of the network which realizes f is derived from the FibDD for f. We extend this method to design circuits for calculation of the generalized Fibonacci spectra from FibDDs.

关键词： Integrated circuit interconnections Circuit topology Network topology Design methodology Circuit synthesis Signal processing Circuit testing Intelligent networks computer science Power system interconnection

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Commitment mechanism in agent organization

Commitment mechanism in agent organization

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International Conferences on Info-tech and Info-net (ICII)

作者： Zhang Wei Xu Jinhui Shi Chunyi Department of Computer Science and Technology Tsinghua University Beijing China Laboratory of Intelligent Information Processing Institute of Computing Technology Chinese Academy and Sciences Beijing China

As a novel system description and problem solving method, agent organization can potentially decrease the difficulty of problem solving and reduce the complexity of agent interactions. Current research about agent organization are mostly being undertaken in an agent organization model, organization structure, organization rules, organization formation and evolution, so it is necessary to extend the research to analyze mental states and their relations. In the paper, the mental states of commitments in agent organization are defined and analyzed including internal commitment, social commitment, group commitment and organization commitment. The semantics and properties of different commitments are given so advancing the works associated with agent organization.

关键词： Problem-solving Bridges computer science Laboratories Intelligent agent Information processing

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Fast SDP design of FIR compaction filters with combined constraints

Fast SDP design of FIR compaction filters with combined cons...

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International Symposium on Image and Signal processing and Analysis

作者： B. Dumitrescu C. Popeea Tampere International Center for Signal Processing Tampere University of Technology Tampere Finland Department of Automatic Control and Computer Science Politehnica University of Bucharest Bucharest Romania

ISBN: (纸本)9539676940

We propose efficient semidefinite programming methods for designing signal-adapted compaction filters with: (i) spectral mask, and (ii) regularity constraints. In both cases, the initial problem, formulated with the Kalman-Yakubovich-Popov lemma, is transformed by simplifying its dual and the result is an SDP problem with Toeplitz matrices and small number of variables. All resulting methods, which may be gathered in a single unifying formulation, always give the optimal filter. We present experimental evidence showing convenient execution times and good numerical accuracy.

关键词： Finite impulse response filter Compaction Signal design Signal processing Symmetric matrices computer science Electronic mail Automatic control Design methodology Pulse shaping methods

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CONTENT-BASED RETRIEVAL OF MULTIMEDIA INFORMATION

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International Journal of Image and Graphics 2001年第1期1卷 83-91页

作者： DAGAN (DAVID) FENG Biomedical and Multimedia Information Technology (BMIT) Group Basser Department of Computer Science The University of Sydney NSW 2006 Australia Center for Multimedia Signal Processing (CMSP) Department of Electronic & Information Engineering The Hong Kong Polytechnic University Hong Kong P. R. China

The recent information explosion has led to massively increased demand for multimedia data storage and retrieval techniques. Content-based retrieval is an important alternative and complement to the traditional keyword-based searching for multimedia data and can greatly enhance information management. For the last ten years, the Biomedical and Multimedia Information technology (BMIT) Group and recently the Center for Multimedia Signal processing (CMSP) have conducted systematic studies and research activities on this topic. Some of the works relating to content-based image/video retrieval and their applications are briefly presented in this paper.

关键词： Content-Based Retrieval Image/Video Data Management Multimedia Application

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A new approach for modeling OOV words 6

A new approach for modeling OOV words

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6th International Conference on Spoken Language processing, ICSLP 2000

作者： Ren, Weimin Wang, Chengfa Gao, Wen Xu, Jinpei Speech Processing Laboratory Department of Computer Science and Technology Harbin Institute of Technology Harbin China

ISBN: (纸本)7801501144

This paper addressed the problem of Out-Of-Vocabulary (OOV) utterance detection in small vocabulary telephone keyword spotting system. We propose a new approach for modeling OOV words in the scenario of a small vocabulary of telephone keyword spotting system. The paper adopt the semi-continuous Hidden Markov Model with multiple codebooks to modeling the keywords. We propose a two pass procedure to spot the real keyword occurrence. In the first pass, the normal viterbi search procedure is applied, with the appropriate defined and trained garbage models and silence models. The output of this stage produces the N-best word hypothesis The second pass, which can be seen as a verification procedure, take the first pass output as focuses. This approach is mainly constructing a "dynamic anti-model" based on the detected hypothesis keyword model and the current input acoustic information.

关键词： Telephone sets

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Extraction of male and female facial features using neural networks

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Systems and computers in Japan 2000年第3期31卷 68-76页

作者： Kanno, Tsuneo Nagahashi, Hiroshi Agui, Takeshi Department of Information and Computer Science Polytechnic University Sagamihara 229-1196 Japan Department of Information Processing Interdisciplinary Graduate School of Science and Engineering Tokyo Institute of Technology Yokohama 227-8503 Japan Faculty of Engineering TOIN University of Yokohama Yokohama 225-5802 Japan

Features of male/female facial images are examined by analyzing the distribution of connection weights of the hidden-layer unit and the input-layer unit of a neural network that responds to their distinction. Twenty-five gray-level (black-and-white) facial images were used for each of the male and female samples. Several different numbers of mosaic blocks were used for the whole face region and each facial component region. The training parameters of the neural network and the minimum number of hidden layers that can discriminate male/female were obtained by a genetic algorithm. The neural network consisting of these parameters has a stable convergence in any region so that this can discriminate male/female with 100% accuracy. In the feature extraction experiments, hidden layers were obtained, which significantly respond to male/female facial regions. The facial features of male/female can be extracted by analyzing the connection weights between the hidden-layer unit and the input-layer unit. The facial features extracted by using the proposed method were similar to those obtained by other psychological experiments and facial measurements.

关键词： Feature extraction

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Evaluating modeling efficiency of a specific software architecture

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Systems and computers in Japan 2000年第11期31卷 1-11页

作者： Kawakami, Masumi Yoshida, Atsushi Isoda, Sadahiro Knowledge-Based Info. Engineering Toyohashi University of Technology Toyohashi 441-8580 Japan Systems Development Laboratory Hitachi Ltd. Toyohashi University of Technology Wakayama University Nagoya University University of Tokyo Department of Computer Science University of Illinois Urbana IL United States Spec. Interest Grp. on Software Eng. Info. Processing Society of Japan

Software architectural styles that represent structural characteristics of software programs range from specific ones that can be applied to a particular domain to generic ones that can be applied to any domain. If a specific architectural style is available for the target system to be developed, it is appropriate to apply it together with its associated modeling method. However, no quantitative evaluation on the efficiency of specific architectural styles has as yet been reported. This paper presents a quantitative comparison of two architectural styles: specific and generic software architectural styles. The comparison shows that a specific architectural style combined with its associated modeling method allows us to reduce modeling cost as much as a few scores of percent compared with the generic one combined with its modeling method. The improvement results from the characteristics that (1) a specific software architectural style requires less rewriting of modeling diagrams due to its inherent basic structure and (2) there is less redundant information among modeling diagrams.

关键词： Client server computer systems

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Fibonacci decision diagrams and spectral Fibonacci decision diagrams

Fibonacci decision diagrams and spectral Fibonacci decision ...

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International Symposium on Multiple-Valued Logic

作者： R.S. Stankovic M. Stankovic J. Astola K. Egiazarian Department of Computer Science Nis Yugoslavia Int. Center for Signal Processing Tampere University of Technology Tampere Finland

The authors define the Fibonacci decision diagrams (FibDDs) permitting representation of functions defined in a number of points different from N=2/sup n/ by decision diagrams consisting of nodes with two outgoing edges. We show the relationships between the FibDDs and the contracted Fibonacci codes. Then, we define the Spectral Fibonacci DDs (FibSTDDs) in terms of the generalized Fibonacci transforms. This broad family of transforms provides a corresponding family of FibSTDDs. These DDs allow compact representations of functions with simple Fibonacci spectra. Such representations may be useful in various tasks of signal processing, including image processing and systems design, where the generalized Fibonacci transforms have been efficiently used.

关键词： Binary decision diagrams Costs Signal processing Fuzzy logic computer science Image processing Discrete transforms Data structures Decision trees Galois fields

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