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International Conference on Information Fusion

作者： M. Mirmomeni B. Moshiri C. Lucas Control and Intelligent Processing Center of Excellence Electrical and Computer Engineering Department University of Tehran Tehran Iran

ISBN: (纸本)9780662478300;0662478304

Nowadays, there are considerable attentions to combined classifier. Recently, the focus has been shifting from practical heuristic solutions of combination methods to give a methodological way of design. In this study a co-evolutionary algorithm is presented for this purpose. The algorithm synthesizes an explicit classifier directly from bserved data produced by intelligently generated tests. The algorithm is composed of two co-evolving populations; one population evolves candidate classifiers. The second population evolves informative tests that either extract new information from the pattern or elicit desirable behavior from it The fitness of candidate classifiers is their ability to classify in response to all tests carried out so far; the fitness of candidate tests is their ability to make the classifiers disagree in their classifications. The generality of this modeling-evaluation algorithm is demonstrated by applying the chosen classifier of this algorithm to identify modulation methods and results depict the power of this algorithm.

关键词： Testing Process control Intelligent control Pattern recognition Inference algorithms Evolutionary computation Focusing Design methodology Data mining Power generation

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License Plate Detection in Complex Scenes based on Improved Gradient and Match Filtering

License Plate Detection in Complex Scenes based on Improved ...

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IEEE International Conference on Signal Processing and Communications, ICSPC

作者： Mahdy Nabaee G. Ali Hossein-Zadeh Control and Intelligent Processing Center of Excellence School of Electrical and Computer Engineering University of Tehran Tehran Iran

Locating the license plate in the image is a key initial step in automatic License Plate Recognition via machine vision. This step becomes more complicated when the image scene is arbitrary (complex) and the view-angle of camera and luminance conditions are not calibrated and constant. In this paper, a new License Plate Detection method in complex scenes is proposed. After removing regions that have a low probability of being a part of plate we apply a series of match filters on the image. These filters correspond to various (unknown) possible sizes of license. Novel improved Gradient operator improves the performance of the filtering stage. Finally a decision is made based on the faithfulness of candidate regions. This step extracts the plate template. This method was applied on 80 gray scale images of complex scene. The positive detection rate of this method was 71% and there was 29% false positive detection.

关键词： Licenses Layout Matched filters Image edge detection Filtering Intelligent control Cameras Signal processing Automatic control Process control

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Frequency Response Analysis of Active Disturbance Rejection Based control System

Frequency Response Analysis of Active Disturbance Rejection ...

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IEEE Conference on control Technology and Applications (CCTA)

作者： Gang Tian Zhiqiang Gao Center for Advanced Control Technologies Department of Electrical and Computer Engineering Cleveland State University Cleveland OH USA

Active Disturbance Rejection is a relatively new, and quite different, design concept that shows much promise in obtaining consistent response in an industrial control system full of uncertainties. But most of the development and analysis has previously been shown in the time-domain. In this paper, frequency-domain analysis of such a control system is performed to quantify its performance and stability characteristics. The transfer function description of the controller is derived and, together with a highly uncertain linear time-invariant plant, the loop gain frequency response is analyzed. The result shows that the active disturbance rejection based control system possesses a high level of robustness. The bandwidth and stability margins, in particular, are nearly unchanged as the plant parameters vary significantly; so is the sensitivity to input disturbance. Such characteristics makes this control system an appealing solution in dealing with real world control problems where uncertainties abound.

关键词： Frequency response control systems Uncertainty Industrial control Time domain analysis Frequency domain analysis Stability analysis Transfer functions Robust control Bandwidth

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User Modeling for the Result Re-Ranking in the Meta-Search Engines via Reinforcement Learning

User Modeling for the Result Re-Ranking in the Meta-Search E...

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International Conference on Intelligent Systems Design and Applications (ISDA)

作者： Amir Hosein Keyhanipour Behzad Moshiri Caro Lucas Control and Intelligent Processing Center of Excellence School of Electrical and Computer Engineering Department University of Tehran Tehran Iran

Today there are thousands of search engines available, so it is difficult for users to know where they are, how to use them and what topics they best address. Meta-search engines reduce the users' burden by dispatching queries to multiple search engines in parallel and combining the returned results. But there are some problems yet. One of them is that, none of them includes the user model in the answer. In this paper, we propose a mechanism to create a mapping between different categories of users and the underlying search engines using the reinforcement learning approach. By this way, the meta-search engine learns to identify which search engines are most appropriate for particular queries from different user models.

关键词： Metasearch Learning Databases Search engines Information retrieval Intelligent systems Application software Process control Intelligent control Design engineering

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Architecture design of an intelligent information fusion agent for information retrieval from dynamic environments

Architecture design of an intelligent information fusion age...

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International Conference on Information Fusion

作者： Kaveh Kavousi Behzad Moshiri Control and Intelligent Processing Center of Excellence (CIPCE) School of Electrical and Computer Engineering University of Tehran Tehran Iran

ISBN: (纸本)9780662478300;0662478304

Nowadays, the need for intelligent software systems as personal meta search engines which are capable of supplying user by needed information from massive information resources is sensible. Moreover, the current tools have many deficiencies. In a meta search engine, proper queries based upon user's interests are sent to different search engines (or in general, information servers). Then, the returned results are refined and made available for the user based on their priorities. On the same direction in this study we try to design, implement and examine a complete architecture for a customized software intelligent agent which is able to retrieve information from multiple sources based on user interests. The designed architecture is able to use information fusion methods to achieve this goal. Here, the OWA, which is a member of the fuzzy integral operators family, has been used. This agent performs fusion in data, feature, and decision levels. Also the agent is able to extract the behavioral model of each information server against various subjective clusters to increase the intelligence of searching methods and obtain higher quality results in searching process.

关键词： Intelligent agent Information retrieval computer architecture Search engines Metasearch Intelligent systems Software systems Information resources Open wireless architecture Data mining

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One-way continuous-variable quantum key distribution over 5km of standard telecom fiber

One-way continuous-variable quantum key distribution over 5k...

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Quantum Electronics and Laser Science Conference (QELS)

作者： Lei-Lei Huang Bing Qi Li Qian Hoi-Kwong Lo Department of Electrical and Computer Engineering and Department of Physics Center for Quantum Information and Quantum Control Toronto ONT Canada

We report the first experimental demonstration of one-way Gaussian-modulated coherent state quantum key distribution system over kilometers of standard telecom fiber. Under realistic assumptions, the achievable secret... 详细信息

ISBN: (纸本)9781424436484

关键词： Telecommunication standards Quantum computing Detectors Pulse modulation Protocols Phase measurement Phase detection control systems Gaussian processes Security

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Experimental quantum key distribution with active phase randomization

Experimental quantum key distribution with active phase rand...

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Quantum Electronics and Laser Science Conference (QELS)

作者： Yi Zhao Bing Qi Hoi-Kwong Lo Department of Physics and Department of Electrical and Computer Engineering Center for Quantum Information and Quantum Control Toronto ONT Canada

Phase-randomization is an important assumption in many security proofs of practical quantum key distribution (QKD) systems. Here, we present the first experimental QKD with reliable active phase-randomization. A polar... 详细信息

ISBN: (纸本)9781424436484

关键词： Pulse modulation Phase modulation Optical fiber polarization Quantum computing Optical pulse generation Security Mirrors Optical modulation Optical fiber cables Random number generation

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TRACKING control IN THE PRESENCE OF NONLINEAR DYNAMIC FRICTIONAL EFFECTS: ROBOT EXTENSION

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Asian Journal of control 2008年第3期1卷

作者： M. Feemster D.M. Dawson A. Behal W. Dixon Matthew Feemster received the B.S degree in Electrical Engineering from Clemson University Clemson South Carolina in December 1994. Upon graduation he remained at Clemson University and received the M.S. degree in Electrical Engineering in 1997. During this time he also served as a research/teaching assistant. His research work focused on the design and implementation of various nonlinear control algorithms with emphasis on the induction motor and mechanical systems with friction present. He is currently working toward his Ph.D. degree in Electrical Engineering at Clemson University. Darren M. Dawson was born in 1962 in Macon Georgia. He received an Associate Degree in Mathematics from Macon Junior College in 1982 and a B.S. Degree in Electrical Engineering from the Georgia Institute of Technology in 1984. He then worked for Westinghouse as a control engineer from 1985 to 1987. In 1987 he returned to the Georgia Institute of Technology where he received the Ph.D. Degree in Electrical Engineering in March 1990. During this time he also served as a research/teaching assistant. In July 1990 he joined the Electrical and Computer Engineering Department and the Center for Advanced Manufacturing (CAM) at Clemson University where he currently holds the position of Professor. Under the CAM director's supervision he currently leads the Robotics and Manufacturing Automation Laboratory which is jointly operated by the Electrical and Mechanical Engineering departments. His main research interests are in the fields of nonlinear based robust adaptive and learning control with application to electro-mechanical systems including robot manipulators motor drives magnetic bearings flexible cables flexible beams and high-speed transport systems. Aman Behal was born in India in 1973. He received his Masters Degree in Electrical Engineering from Indian Institute of Technology Bombay in 1996. He is currently working towards a Ph.D in Controls and Robotics at Clemson University. His research focuses on the control of no

In this paper, we extend the observer/control strategies previously published in [25] to an n -link, serially connected, direct drive, rigid link, revolute robot operating in the presence of nonlinear friction effects modeled by the Lu-Gre model. In addition, we also present a new adaptive control technique for compensating for the nonlinear parameterizable Stribeck effects. Specifically, an adaptive observer/controller scheme is developed which contains a feedforward approximation of the Stribeck effects. This feedforward approximation is used in a composite controller/observer strategy which forces the average square integral of the position tracking error to an arbitrarily small value. Experimental results are included to illustrate the performance of the proposed controllers.

关键词： Friction compensation nonlinear control

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Hybrid Dynamical Systems: Robust Stability and control

Hybrid Dynamical Systems: Robust Stability and Control

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第二十六届中国控制会议

作者： Goebel Rafal Sanfelice Ricardo G. Teel Andrew R. 3518 NE 42 St. SeattleWA 98105USA Center for Control Dynamical Systemsand ComputationDepartment of Electrical and Computer Engineering University of CaliforniaSanta BarbaraCA 93106-9560USA

Modeling issues for hybrid dynamical systems are discussed and fundamental stability analysis tools are *** tools are useful for the development of hybrid control algorithms.

关键词： Hybrid systems stability control

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Quantum key distribution with entangled photon sources

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Physical Review A 2007年第1期76卷 012307-012307页

作者： Xiongfeng Ma Chi-Hang Fred Fung Hoi-Kwong Lo Center for Quantum Information and Quantum Control Department of Electrical and Computer Engineering University of Toronto Toronto Ont. M5S 1A7 Canada

A parametric down-conversion (PDC) source can be used as either a triggered single-photon source or an entangled-photon source in quantum key distribution (QKD). The triggering PDC QKD has already been studied in the literature. On the other hand, a model and a post-processing protocol for the entanglement PDC QKD are still missing. We fill in this important gap by proposing such a model and a post-processing protocol for the entanglement PDC QKD. Although the PDC model is proposed to study the entanglement-based QKD, we emphasize that our generic model may also be useful for other non-QKD experiments involving a PDC source. Since an entangled PDC source is a basis-independent source, we apply Koashi and Preskill’s security analysis to the entanglement PDC QKD. We also investigate the entanglement PDC QKD with two-way classical communications. We find that the recurrence scheme increases the key rate and the Gottesman-Lo protocol helps tolerate higher channel losses. By simulating a recent 144−km open-air PDC experiment, we compare three implementations: entanglement PDC QKD, triggering PDC QKD, and coherent-state QKD. The simulation result suggests that the entanglement PDC QKD can tolerate higher channel losses than the coherent-state QKD. The coherent-state QKD with decoy states is able to achieve highest key rate in the low- and medium-loss regions. By applying the Gottesman-Lo two-way post-processing protocol, the entanglement PDC QKD can tolerate up to 70dB combined channel losses (35dB for each channel) provided that the PDC source is placed in between Alice and Bob. After considering statistical fluctuations, the PDC setup can tolerate up to 53dB channel losses.

关键词： Quantum theory

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