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检索条件"主题词=Algorithm Design And Analysis"

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Experimental Ripple Suppression Performance of a Virtual Infinite Capacitor 22

Experimental Ripple Suppression Performance of a Virtual Inf...

引用

International Conference on Applied Electronics (AE)

作者： Lin, Shuyue Qi, Pengyuan Lin, Jun Zhao, Xiaowei Weiss, George Ran, Li Univ Warwick Sch Engn Coventry W Midlands England Tel Aviv Univ Sch Elect Engn IL-69978 Ramat Aviv Israel

ISBN: (纸本)9788026106425

We experimentally show the performance of a Virtual Infinite Capacitor (VIC) in suppressing the voltage ripple. VIC mainly uses a bi-directional DC-DC converter with only two small capacitors inside to mimic the filtering process of a large capacitor by applying suitable control algorithms. It was firstly proposed in [1], [2] and then improved in [3] in both control algorithms and circuit designs. Based on VIC's control algorithm in [3], we injected the DC voltage together with a 50Hz, 85V (peak-to-peak) sinusoidal ripple to the VIC, and we achieved outstanding filtering performance in both the simulation and experiment. The 85V voltage ripple is eliminated and the DC voltage is extracted with no visible 50Hz ripples.

关键词： Capacitors Integrated circuit modeling Resistors Power electronics algorithm design and analysis Voltage control Switches

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analysis of Petri nets by means of concurrent simulation

Analysis of Petri nets by means of concurrent simulation

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International Conference on Parallel Computing in Electrical Engineering (PAR ELEC 2002)

作者： Karatkevich, A Zakrevskij, A Inst Engn Cybernet Minsk 220012 BELARUS

ISBN: (纸本)0769517307;0769517315

In the paper the task of concurrent analysis of a Petri net is considered. A Petri net is given, and several processes able to simulate transition firings. The methods of analysis described in this paper are based on the original approach to net decomposition and oriented for the so-called operational nets and a class of cyclic Petri nets. The methods analyze the nets by reduced state space constructing;both their sequential and parallel versions are described. Also the algorithm of decomposition oriented to concurrent analysis is described. The suggested methods of analysis can be implemented as a multithread application.

关键词： algorithm design and analysis Analytical models Communication system operations and management Cybernetics Parallel algorithms Performance analysis Petri nets Protocols Reachability analysis State-space methods

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On the Efficient design of a Prototype-Based Classifier Using Differential Evolution

On the Efficient Design of a Prototype-Based Classifier Usin...

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2014 IEEE Symposium on Differential Evolution (SDE)

作者： Soares Filho, Luiz A. Barreto, Guilherme A. Univ Fed Ceara Dept Teleinformat Engn Ctr Technol Av Mister Hull S-NCampus PiciBldg 725 BR-60455970 Fortaleza Ceara Brazil

ISBN: (纸本)9781479944613

In this paper we introduce an evolutionary approach for the efficient design of prototype-based classifiers using differential evolution (DE). For this purpose we amalgamate ideas from the Learning Vector Quantization (LVQ) framework for supervised classification by Kohonen [1], [2], with the DE-based automatic clustering approach by Das et al. [3] in order to evolve supervised classifiers. The proposed approach is able to determine both the optimal number of prototypes per class and the corresponding positions of these prototypes in the data space. By means of comprehensive computer simulations on benchmarking datasets, we show that the resulting classifier, named LVQ-DE, consistently outperforms state-of-the-art prototype-based classifiers.

关键词： evolutionary computation learning (artificial intelligence) pattern classification vectors LVQ-DE differential evolution evolutionary approach learning vector quantization prototype-based classifier supervised classification algorithm design and analysis Biological cells Buildings Neurons Prototypes Training Vectors learning vector quantization algorithm design and analysis PROTOTYPE cytology Classifiers evolutionary algorithm Pattern recognition Buildings Cloning Vectors Training Functional training Neurons Computer Simulation

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Generation of emulation platforms for NoC exploration on FPGA

Generation of emulation platforms for NoC exploration on FPG...

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22nd IEEE International Symposium on Rapid System Prototyping (RSP)

作者： Tan, Junyan Fresse, Virginie Rousseau, Frederic Univ Lyon Univ St Etienne Hubert Curien Lab UMR 5516CNRS F-42000 St Etienne France

ISBN: (纸本)9781457706608

NoC (Network on Chip) architecture exploration is an up to date problem with today's multimedia applications and platforms. The presented methodology gives a solution to easily evaluate timing and resource performances tuning several architectural parameters, in order to find the appropriate NoC architecture with a unique emulation platform. In this paper, a design flow that generates NoC-based emulation platforms on FPGA is presented. From specified traffic scenarios, our tool automatically inserts appropriate IP blocks (emulation blocks and routing algorithm) and generates an RTL NoC model with specific and tunable components that is synthesized on FPGA.

关键词： algorithm design and analysis Emulation FPGA Field programmable gate arrays Generators IP blocks IP networks NoC exploration RTL NoC model Routing Signal processing algorithms design flow emulation platform generation field programmable gate arrays integr

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A Cooperative Co-evolutionary Multi-Agent System for Multi-objective Layout Optimization of Satellite Module

A Cooperative Co-evolutionary Multi-Agent System for Multi-o...

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IEEE International Conference on Systems, Man, and Cybernetics (SMC)

作者： Zhang, Zihui Sun, Xueyan Hou, Luyang Chen, Wang Shi, Yanjun Cao, Xuyang Dalian Univ Technol Dalian Peoples R China Concordia Univ Montreal PQ Canada

ISBN: (纸本)9781538616451

we herein propose a new collaborative framework, called cooperative co-evolutionary multi-agent system(CCEMAS), for solving multi-objective layout optimization problems. Every agent in CCEMAS is encoded as a multi-objective cooperative co-evolutionary strategy, including an algorithm and its setting. In the iterative procedure, the strategies will evolve along with the evolution of the agent team, and use different algorithms and settings during different stages of problem solving. A multi-objective optimization of satellite module is solved to validate the method and obtain the Pareto optimal solutions. Finally, the evolution process of multi-objective cooperative co-evolutionary strategies in agents is analyzed for constructing new multi-objective cooperative co-evolutionary algorithms for this problem in the future.

关键词： Satellites Collaboration Layout Pareto optimization Multi-agent systems algorithm design and analysis

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On Evaluation of Evolutionary Networks Using New Temporal Centralities algorithm 7

On Evaluation of Evolutionary Networks Using New Temporal Ce...

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International Conference on Intelligent Networking and Collaborative Systems (INCoS)

作者： Zelinka, Ivan Tomaszek, Lukas Snasel, Vacav VSB Tech Univ Ostrava FEI Dept Comp Sci Tr 17 Listopadu 15 Ostrava Czech Republic

ISBN: (纸本)9781467376952

In this paper, we are continuing to show mutual intersection of two different areas of research: complex networks and evolutionary computation. We demonstrate that dynamics of evolutionary algorithms, that are based on Darwin theory of evolution and Mendel theory of genetic heritage, can be also visualized as complex networks. Such network can be then analyzed by means of classical tools of complex networks science. Results presented in our previous papers were currently numerical demonstration rather than theoretical mathematical proofs. We opened question whether evolutionary algorithms really create complex network structures and whether this knowledge can be successfully used like feedback for control of evolutionary dynamics and its improvement in order to increase the performance of evolutionary algorithms. This research paper is focused on the dynamics of complex networks from windows time point of view with proposition of a new windows time algorithm to evaluated evolution dynamics. There are described by temporal centralities and change centrality. These centralities are implemented as Gephi plugin and an own tool. At the end are examples of analysis of some networks using implemented algorithms.

关键词： complex networks evolutionary computation Darwin theory of evolution Gephi plugin Mendel theory of genetic heritage evolutionary algorithms evolutionary dynamics evolutionary networks mutual intersection temporal centralities algorithm algorithm design and analysis Complex networks Evolutionary computation Genetic algorithms Heuristic algorithms Power system dynamics Visualization

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Scale and Object Aware Image Retargeting for Thumbnail Browsing

Scale and Object Aware Image Retargeting for Thumbnail Brows...

引用

IEEE International Conference on Computer Vision (ICCV)

作者： Sun, Jin Ling, Haibin Temple Univ Dept Comp & Informat Sci Ctr Data Analyt & Biomed Informat Philadelphia PA 19122 USA

ISBN: (纸本)9781457711022

Many image retargeting algorithms, despite aesthetically carving images smaller, pay limited attention to image browsing tasks where tiny thumbnails are presented. When applying traditional retargeting methods for generating thumbnails, several important issues frequently arise, including thumbnail scales, object completeness and local structure smoothness. To address these issues, we propose a novel image retargeting algorithm, Scale and Object Aware Retargeting (SOAR), which has four components: (1) a scale dependent saliency map to integrate size information of thumbnails, (2) objectness (Alexe et al. 2010) for preserving object completeness, (3) a cyclic seam carving algorithm to guide continuous retarget warping, and (4) a thin-plate-spline (TPS) retarget warping algorithm that champions local structure smoothness. The effectiveness of the proposed algorithm is evaluated both quantitatively and qualitatively. The quantitative evaluation is conducted through an image browsing user study to measure the effectiveness of different thumbnail generating algorithms, followed by the ANOVA analysis. The qualitative study is performed on the RetargetMe benchmark dataset. In both studies, SOAR generates very promising performance, in comparison with state-of-the-art retargeting algorithms.

关键词： Accuracy algorithm design and analysis Deformable models Humans Image segmentation Pollution measurement Visualization

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A Breadth-First Search algorithm for Mining Generalized Frequent Itemsets Based on Set Enumeration Tree

A Breadth-First Search Algorithm for Mining Generalized Freq...

引用

International Symposium on Computer Science and Its Applications

作者： Mao, Yu Xing Shi, Bai Le Fudan Univ Dept Comp & Informat Technol Shanghai 200433 Peoples R China

ISBN: (纸本)9780769534282

Mining generalized association rules is one of important research circa in data mining. If e rise the traditional methods, it frin meet two basic problems. the first is low efficiency in generating, generalized frequent itemsets With the items and levels of taxonomy, increasing and the second is that too much redundant itemsets support are counted. This paper proposes an improved Breadth-First Search method to mine generalized association rules. The experiments oil the real-life data shoe. that our method outperforms the well-known and recent algorithms greatly.

关键词： Itemsets Taxonomy Pediatrics Optimization Transaction databases algorithm design and analysis Association rules

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Power Flow analysis algorithm for Islanded LV Microgrids Including Distributed Generator Units with Droop Control and Virtual Impedance Loop

Power Flow Analysis Algorithm for Islanded LV Microgrids Inc...

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29th Annual IEEE Applied Power Electronics Conference and Exposition (APEC)

作者： Li, Chendan Chaudhary, Sanjay K. Vasquez, Juan C. Guerrero, Josep M. Aalborg Univ Dept Energy Technol Aalborg Denmark

ISBN: (纸本)9781479923250

In this paper, an improved power flow analysis algorithm for distributed generation (DG) units controlled with P/Q droop functions and virtual impedances in a low voltage (LV) microgrid is proposed. The proposed analysis provides in contrast to conventional power flow calculation techniques: (i) consideration of virtual impedance parameters and (ii) higher accuracy in reactive power flow calculation. The improved power flow analysis algorithm proposed in this paper is validated by comparing the calculation results with detailed time domain simulation results. Case studies have been carried out by analyzing the effects of control parameter variation in the power flow results obtained by the proposed algorithm.

关键词： distributed power generation electric impedance load flow power generation control reactive power DG units P/Q droop functions distributed generator units droop control islanded LV microgrids islanded low voltage microgrids power flow analysis algorithm reactive power flow calculation virtual impedance loop algorithm design and analysis Impedance Load flow analysis Microgrids Reactive power Voltage control

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Maximal Clique Enumeration with Data-Parallel Primitives 7

Maximal Clique Enumeration with Data-Parallel Primitives

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IEEE 7th Symposium on Large Data analysis and Visualization (LDAV)

作者： Lessley, Brenton Perciano, Talita Mathai, Manish Childs, Hank Bethel, E. Wes Univ Oregon Eugene OR 97403 USA Lawrence Berkeley Natl Lab Berkeley CA USA

ISBN: (纸本)9781538606179

The enumeration of all maximal cliques in an undirected graph is a fundamental problem arising in several research areas. We consider maximal clique enumeration on shared-memory, multi-core architectures and introduce an approach consisting entirely of data-parallel operations, in an effort to achieve efficient and portable performance across different architectures. We study the performance of the algorithm via experiments varying over benchmark graphs and architectures. Overall, we observe that our algorithm achieves up to a 33-time speedup and 9-time speedup over state-of-the-art distributed and serial algorithms, respectively, for graphs with higher ratios of maximal cliques to total cliques. Further, we attain additional speedups on a GPU architecture, demonstrating the portable performance of our data-parallel design.

关键词： Arrays algorithm design and analysis Vegetation Data visualization Graphics processing units

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