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The Convergence of the Abstract Evolutionary Algorithm Based on a Special Selection Mechanism
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作者 BIYong-qing XUEMing-zhi 《Chinese Quarterly Journal of Mathematics》 CSCD 2003年第2期213-220,共8页
There has been a growing interest in mathematical models to character the evolutionary algorithms. The best-known one of such models is the axiomatic model colled the abstract evolutionary algorithm. In this paper, we... There has been a growing interest in mathematical models to character the evolutionary algorithms. The best-known one of such models is the axiomatic model colled the abstract evolutionary algorithm. In this paper, we first introduce the definitions of the abhstract selection and evolution operators, and that of the abstract evolutionary algorithm, which describes the evolution as an abstract stochastic process composed of these two fundamental abstract operators. In particular, a kind of abstract evolutionary algorithms based on a special selection mechansim is discussed. According to the sorting for the state space, the properties of the single step transition matrix for the algorithm are anaylzed. In the end, we prove that the limit probability distribution of the Markov chains exists. The present work provides a big step toward the establishment of a unified theory of evolutionary computation. 展开更多
关键词 abstract evolutionary algorithm a transition matrix CONVERGENCE
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浅谈中学数学试题的编制
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作者 徐小菊 周根清 《高中数学教与学》 2015年第10X期10-12,共3页
创新思维,一般是指学生在原有的知识基础上,结合自己的实践、探索进行再创造.这种思维结果通常并不是首次发现或前所未有的,但一定有自身的思考,不受现成的、常规的思路的约束.学生的创新思维是在学生对新知识的主动探索中产生,并在学... 创新思维,一般是指学生在原有的知识基础上,结合自己的实践、探索进行再创造.这种思维结果通常并不是首次发现或前所未有的,但一定有自身的思考,不受现成的、常规的思路的约束.学生的创新思维是在学生对新知识的主动探索中产生,并在学生主动探索中不断加以完善的.数学作为基础教育的重要学科,不仅要让学生掌握数学知识,更要培养学生独立获取知识的学习能力和勇于创新的思维能力,促进学生的主体性发展. 展开更多
关键词 中学数学 主体性发展 学习能力 思维结果 思维能力 直觉思维 思维过程 发散思维 巩固性原则 抽象概
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