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Geographic Routing(GR)algorithms require nodes to periodically transmit HELLO messages to allow neigh- bors to know their positions(beaconin… …   相似文献

Juan A. Sánchez  Rafael Marín-Pérez  Pedro M. Ruiz 《计算机科学技术学报》2008,23(3):438-450

Effect of Noisy Fitness in Real-Time Strategy Games Player Behaviour Optimisation Using Evolutionary Algorithms

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Antonio M. Mora  Antonio Fernndez-Ares  Juan J. Merelo  Pablo García-Snchez  Carlos M. Fern  es 《计算机科学技术学报》2012,27(5):1007-1023

Parallel LDPC Decoding on GPUs Using a Stream-Based Computing Approach

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Low-Density Parity-Check (LDPC) codes are powerful error correcting codes adopted by recent communication standards. LDPC decoders are based on belief propagation algorithms, which make use of a Tanner graph and very intensive message-passing computation, and usually require hardware-based dedicated solutions. With the exponential increase of the computational power of commodity graphics processing units (GPUs), new opportunities have arisen to develop general purpose processing on GPUs. This paper proposes the use of GPUs for implementing flexible and programmable LDPC decoders. A new stream-based approach is proposed, based on compact data structures to represent the Tanner graph. It is shown that such a challenging application for stream-based computing, because of irregular memory access patterns, memory bandwidth and recursive flow control constraints, can be efficiently implemented on GPUs. The proposal was experimentally evaluated by programming LDPC decoders on GPUs using the Caravela platform, a generic interface tool for managing the kernels' execution regardless of the GPU manufacturer and operating system. Moreover, to relatively assess the obtained results, we have also implemented LDPC decoders on general purpose processors with Streaming Single Instruction Multiple Data (SIMD) Extensions. Experimental results show that the solution proposed here efficiently decodes several codewords simultaneously, reducing the processing time by one order of magnitude.… …   相似文献

Gabriel Falc  atilde  o  Student Member  IEEE  Shinichi Yamagiwa  Member  IEEE  Vitor Silva    Leonel Sousa  Member  ACM  Senior Member  IEEE 《计算机科学技术学报》2009,24(5):913-924

Parameter Control of Genetic Algorithms by Learning and Simulation of Bayesian Networks — A Case Study for the Optimal Ordering of Tables

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Parameter setting for evolutionary algorithms is still an important issue in evolutionary computation. There are two main approaches to para… …   相似文献

Concha Bielza  Juan A. Fernndez del Pozo  Pedro Larranaga 《计算机科学技术学报》2013,28(4):720-731

Design and Implementation of an Extended Collectives Library for Unified Parallel C

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Unified Parallel C(UPC) is a parallel extension of ANSI C based on the Partitioned Global Address Space(PGAS) programming model,which provid… …   相似文献

Carlos Teijeiro  Guillermo L.Taboada  Juan Tourio  Ramón Doallo  Jos C.Mourio  Damivn A.Mallón  Brian Wibecan 《计算机科学技术学报》2013,28(1):72-89

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Identification of abnormal cervical cells is a significant problem in computer-aided diagnosis of cervical cancer.In this study,we develop a… …   相似文献

Hua Chen  Juan Liu  Qing-Man Wen  Zhi-Qun Zuo  Jia-Sheng Liu  Jing Feng  Bao-Chuan Pang  Di Xiao 《计算机科学技术学报》2021,36(2):347-360

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MicroRNAs (miRNAs) exert an enormous influence on cell differentiation,biological development and the onset of diseases.Because predicting p… …   相似文献

Ling-Yun Dai  Jin-Xing Liu  Rong Zhu  Juan Wang  Sha-Sha Yuan 《计算机科学技术学报》2021,36(2):276-287

SSME 在欧洲的教学：Porto和Masaryk大学的一个联合硕士培养计划

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Service Science, Engineering and Management (SSME) is emerging as a new discipline and several universities have been evolving or creating c… …   相似文献

Jo?o Falc?oe Cunh  Petra Hocová  Lia Patrício  Zdenko Staní?ek 《计算机系统应用》2009,18(6):175-181