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MRML: A communication protocol for content-based image retrieval 4th

引用

4th International Conference on Visual Information Systems, VISUAL 2000

作者： Müller, Wolfgang Müller, Henning Marchand-Maillet, Stéphane Pun, Thierry Squire, David McG. Pečenović, Zoran Giess, Christoph De Vries, Arjen P. Computer Vision Group Computer Science Department University of Geneva Geneva Switzerland Computer Science and Software Engineering Monash University Melbourne Australia LCAV and Ergonomics Group Ecole Polytechnique Fédérale de Lausanne Switzerland Medical and Biological Informatics Deutsches Krebsforschungszentrum Heidelberg Germany CWI Amsterdam Netherlands

ISBN: (纸本)3540411771

In this paper we introduce and describe the Multimedia Retrieval Markup Language (MRML). This XML-based markup language is the basis for an open communication protocol for content-based image retrieval systems (CBIRSs). MRML was initially designed as a means of separating CBIR engines from their user interfaces. It is, however, also extensible as the basis for standardised performance evaluation procedures. Such a tool is essential for the formulation and implementation of common benchmarks for CBIR. A common protocol can also bring new dynamics to the CBIR field - it makes the development of new systems faster and more efficient, and opens the door of the CBIR research field to other disciplines such as Human-computer Interaction. The MRML specifications, as well as the first MRML-compliant applications, are freely available and are introduced in this paper. © Springer-Verlag Berlin Heidelberg 2000.

关键词： Search engines

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The potential of distributed generation to provide ancillary services

The potential of distributed generation to provide ancillary...

引用

IEEE Summer Meeting Power engineering Society

作者： G. Joos B.T. Ooi D. McGillis F.D. Galiana R. Marceau Department of Electrical and Computer Engineering Concordia University Montreal QUE Canada McGill University Canada Ecole Polytechnique de Montreal Canada

The growing concerns regarding electric power quality and availability have led to the installation of more and more distributed generation. In parallel and in the context of an accelerating trend towards deregulation of the electric industry, the unbundling of services, many grouped under ancillary services, should create a market for some of these services. This paper discusses the potential of distributed generation (DG) to provide some of these services. In particular, DG can serve locally as the equivalent of a spinning reserve and voltage support of the AC bus. The main types of distributed generation with emphasis on the power electronic interface and the configurations appropriate to provide ancillary services are reviewed. The flexibility and features provided by the power electronic interface are illustrated. In addition to control of the real power, other functions can be incorporated into the design of the interface to provide services, such as reactive power, and resources associated with power quality. These include voltage sag compensation and harmonic filtering. The implications on the design of the power converter interface are discussed.

关键词： Distributed control Power electronics Voltage fluctuations Power harmonic filters Context-aware services Acceleration Spinning Reactive power control Power quality Filtering

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Miniaturized Multi-Pole Broadband Microstrip Bandpass Filter: Concept and Verification

Miniaturized Multi-Pole Broadband Microstrip Bandpass Filter...

引用

European Conference on Microwave

作者： Lei Zhu Huizheng Bu Ke Wu Mook Seng Leong Department of Electrical and Computer Engineering Ecole Polytechnique Poly Grames Research Center Montreal QUE Canada Department of Electrical Engineering National University of Singapore Singapore

A new class of miniaturized multi-pole broadband microstrip bandpass filters is proposed and developed by using the parallel-coupled line with frequency-distributed coupling and a line resonator loaded with open-end stubs. Operating mechanism of such a filter is explained, and its frequency response is optimized to show attractive features of the new scheme, namely, broad bandwidth of about 60% and single-resonator four-pole filtering behavior with S11

关键词： Microstrip filters Band pass filters Frequency Microstrip resonators Resonator filters Circuit topology Equivalent circuits Coupling circuits Network topology Calibration

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MIAMAP: a virtual market-place for intelligent agents

MIAMAP: a virtual market-place for intelligent agents

引用

Annual Hawaii International Conference on System Sciences (HICSS)

作者： L. Esmahi J.-C. Bernard P. Dini Department of electrical and computer Engineering Ecole Polytechnique de Montreal Canada Centre de Recherche informatique de Montreal Inc. Canada

ISBN: (纸本)0769504930

The aim of the work is to verify the hypothesis which states that, "the use of dependency relations in the negotiation process will improve the balance between the need of the individual agents and the needs of the overall system". The application is an open virtual market place (L. Esmahi et al., 1999), where agents process their marketing transactions. We therefore present a generalized mediation model that provides support for a variety of transactions types, from simple buying and selling to complex multiagent contract negotiations. We also present a negotiation strategy (L. Esmahi et al., 1999), that takes advantage of the services of the market to construct beneficial contracts. Our market architecture is organized around three basic components: the market place and its manager, the customers (buyers/sellers), and the transaction sessions. We have shown in the experimental results, that the introduction of an explicit mediator can help resolve conflicts and add value to multiagent contracting, by allowing different types of contracts based on dependencies (L. Esmahi; J.C. Bernard et al., 1998).

关键词： Intelligent agent Contracts Protocols Mediation Electrical capacitance tomography Read only memory Electronic commerce Information management Technology management

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Distributed algorithms for fair bandwidth allocation to elastic services in broadband networks

Distributed algorithms for fair bandwidth allocation to elas...

引用

IEEE Annual Joint Conference: INFOCOM, IEEE computer and Communications Societies

作者： H. Yaiche R.R. Mazumdar C. Rosenberg Department of Electrical and Computer Engineering Ecole Polytechnique de Montreal Montreal QUE Canada School of ECE Purdue University West Lafayette IN USA

The Nash arbitration scheme from cooperative game theory provides a natural framework to address the allocation of available bandwidth in network links which is network (Pareto) optimal and satisfies precise notions of fairness. In this paper we propose two distributed bandwidth allocation schemes that allocate available bandwidths to elastic sources according to the Nash arbitration scheme. We prove convergence to the desired allocations for both algorithms. Finally we show how such a scheme can be implemented in a real network.

关键词： Distributed algorithms Channel allocation Intelligent networks Broadband communication Bandwidth Game theory Convergence Communication system control Context-aware services Bit rate

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Variable resolution CMOS current mode active pixel sensor

Variable resolution CMOS current mode active pixel sensor

引用

IEEE International Symposium on Circuits and Systems (ISCAS)

作者： J. Coulombe M. Sawan C. Wang Electr. & Comput. Eng. Dept. Ecole Polytech. de Montreal Que. Canada Electrical and Computer Engineering Department Ecole Polytechnique de Montreal Montreal Canada Electrical and Computer Engineering Department Concordia University Montreal Canada

We present in this paper a current mediated active pixel sensor (APS) with variable image size and resolution for power saving, electronic zooming, and data reduction at the sensor level. The circuit can perform averaging of output signals in blocks of adjacent pixels (kernels) of size 1/spl times/1, 2/spl times/2 and 4/spl times/4, allowing data reduction without aliasing effects. To achieve this, a current approach is used, thus enabling high speed operation and low power supply capacity. A novel fixed pattern noise (FPN) reduction scheme using a compact circuitry is presented. The circuit compensates for pixel transconductance mismatch in addition to offset error via analog to digital conversion reference current scaling. Hspice simulations using parameters of a 0.35 /spl mu/m CMOS process illustrate the advantage of the new technique over usual correlated double sampling (CDS) in current mode sensors. Parallel integrated analog to digital converters (ADC), a data line-buffer and digital control complete the circuit making data transmission easy and simplifying hardware needed for using the image sensor.

关键词： Circuits Image sensors Signal resolution Analog-digital conversion CMOS image sensors Pixel Image resolution Kernel Power supplies Noise reduction

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Unified CAD model of microstrip line with backside aperture for multilayer integrated circuit

Unified CAD model of microstrip line with backside aperture ...

引用

Microwave, MTT-S International Symposium

作者： Lei Zhu Huizheng Bu Ke Wu M. Stubbs Department of Electrical & Computer Engineering Ecole Polytechnique University of Montreal QUE Canada Communications Rcscarch Centre Ottawa ONT Canada

Microstrip line structure with backside aperture is developed for designing low-loss and high-impedance transmission line based multilayer integrated circuits. Applying a so-called "short-open calibration" (SOC) technique that is self-contained in our full-wave method of moments (MoM), we can formulate a unified equivalent CAD circuit model that is able to exhibit electrical properties of the proposed structure. We developed CAD model and structure are effectively used to design a multistage microstrip low-pass filter. Predicted filtering characteristics are well confirmed by our measurements.

关键词： Integrated circuit modeling Apertures Nonhomogeneous media Low pass filters Message-oriented middleware Microstrip filters Design automation Calibration Equivalent circuits Circuit topology

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Analysis of quantization effects in a digital hardware implementation of a fuzzy ART neural network algorithm

Analysis of quantization effects in a digital hardware imple...

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IEEE International Symposium on Circuits and Systems (ISCAS)

作者： M.-A. Cantin Y. Blaguiere Y. Sarvaria P. Lavoie E. Granger Electrical and Computer Engineering Department École Polytechnique de Montréal Montreal QUE Canada Department of National Defence Defence Research Establishment Canada

A reformulated Adaptive Resonance Theory (ART) neural network algorithm has recently been implemented in digital hardware. Naturally, the fixed point, fixed word length data format used causes some output differences with respect to floating point computer simulation. These differences are observed when using realistic input data. The effects of input quantization and the accumulation of round off errors in the arithmetic operations making up the algorithm are analyzed. Even a small quantization or round off error can trigger a change in the clustering produced. This does not mean that the clustering is not valid. Indeed, the validity of the clustering can be comparable to that obtained by floating point computer simulation, provided the word length is sufficient. This is verified on realistic input data consisting of radar pulses received from a number of emitters.

关键词： Quantization computer simulation computer errors Resonance Subspace constraints Neural networks Neural network hardware Arithmetic Clustering algorithms Algorithm design and analysis

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Tracing object-oriented code into functional requirements

Tracing object-oriented code into functional requirements

引用

IEEE Workshop on Program Comprehension

作者： G. Antoniol G. Canfora G. Casazza A. De Lucia E. Merlo Faculty of Engineering Piazza Roma University of Sannio Benevento Italy University of Naples Federico II Naples Italy Department Electrical and Computer Engineering Ecole Polytechnique Montreal QUE Canada

software system documentation is almost always expressed informally, in natural language and free text. Examples include requirement specifications, design documents, manual pages, system development journals, error logs and related maintenance reports. We propose an approach to establish and maintain traceability links between source code and free text documents. A premise of our work is that programmers use meaningful names for program items, such as functions, variables, types, classes, and methods. We believe that the application-domain knowledge that programmers process when writing the code is often captured by the mnemonics for identifiers; therefore, the analysis of these mnemonics can help to associate high level concepts with program concepts, and vice-versa. The approach is applied to software written in an object oriented language, namely Java, to trace classes to functional requirements.

关键词： Programming profession Documentation Writing Libraries Natural languages computer errors Java software systems Cognition Object oriented modeling

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Path tracking control of tracked vehicles

Path tracking control of tracked vehicles

引用

IEEE International Conference on Robotics and Automation (ICRA)

作者： M. Ahmad V. Polotski R. Hurteau Dept. of Electr. & Comput. Eng. Ecole Polytech. Montreal Que. Canada Department of Electrical and Computer Engineering Ecole Polytechnique Montreal Canada

A path tracking control algorithm for tracked surface drilling machines is presented. The general dynamic model of such vehicle is simulated including track-soil interactions. The controller is based on feedback linearization of the equations with feedforward friction compensation. It linearizes the complex force-slip relationship to relate the states of the system to the inputs. The controller based on simplified models is applied to the detailed simulated model of the vehicle. The result is an accurate control of the lateral offset and forward velocity error along a path.

关键词： Vehicle dynamics Force control Drilling machines Friction Velocity control Automatic control Remotely operated vehicles Equations Error correction Mobile robots

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