文献类型：会议论文

英文题名：A regeneratable dynamic differential evolution algorithm for neural networks with integer weights

作者：Bao, Jian[1];Chen, Yu[2];Yu, Jin-shou[1]

机构：[1]E China Univ Sci & Technol, Sch Informat Sci & Engn, Shanghai 200237, Peoples R China;[2]Hangzhou Dianzi Univ, Inst Software & Intelligent Technol, Hangzhou 310018, Peoples R China

会议论文集：21st Conference on China Process Control

会议日期：AUG 06-08, 2010

会议地点：Hangzhou, PEOPLES R CHINA

语种：英文

外文关键词：Differential evolution; Integer weights; Neural networks; Greedy; Embedded systems; Function approximation

摘要：Neural networks with integer weights are more suited for embedded systems and hardware implementations than those with real weights. However, many learning algorithms, which have been proposed for training neural networks with float weights, are inefficient and difficult to train for neural networks with integer weights. In this paper, a novel regeneratable dynamic differential evolution algorithm (RDDE) is presented. This algorithm is efficient for training networks with integer weights. In comparison with the conventional differential evolution algorithm (DE), RDDE has introduced three new strategies: (1) A regeneratable strategy is introduced to ensure further evolution, when all the individuals are the same after several iterations such that they cannot evolve further. In other words, there is an escape from the local minima. (2) A dynamic strategy is designed to speed up convergence and simplify the algorithm by updating its population dynamically. (3) A local greedy strategy is introduced to improve local searching ability when the population approaches the global optimal solution. In comparison with other gradient based algorithms, RDDE does not need the gradient information, which has been the main obstacle for training networks with integer weights. The experiment results show that RDDE can train integer-weight networks more efficiently.