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多峰的的英文

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"多峰的"怎么读用"多峰的"造句

英文翻译手机手机版

  • multimodal
  • peaky

例句与用法

  • Then , analyzed from calculation methods , this model is a type of knapsack problem with restrictions between lower - limit and upper - limit , which is a discontinuous and multi - maximum complicated problem
    然后从计算方法上,将该贷款组合优化问题归结为一类有上下限的非连续、多峰的特殊背包问题。
  • But in fact , in the design of the deep excavations , which deals with many factors , the variables are discrete and the aim function has more than one peak value . so the traditional optimal methods often run into the local optimal value
    实际上,在深基坑工程设计中,涉及因素很多,变量是离散的,目标函数也是多峰的,利用传统的优化方法,往往使算法陷入局部最优解。
  • But , pso convergence ' s speed become slow in latter iterative phase , and pso is easy to fall into local optimization . at present , some scholars improve base pso mostly using 3 methods : disperse algorithm , increase convergence speed , enhance particle ' kinds . in the paper , i put forward 2 methods aiming at local best resutl but not whole best result . i modify base pso using the last method . some scholars put forward times initializations , so i select best result after circulating some times to be a parameter of formula . first , put particle into some small region , and ensure every region having one paticle at least . second , every region ' s particle has probability transfer other regions . although increase running time , enhance particle ' kinds , decrese the probability of convergence far from whole best result . nerms ( network educational resource management system ) is one of the research projects in the science and technology development planning of jilin province . the aim of nerms is to organize and manage various twelve kinds of network educational resources effectively so that people can share and gain them easily and efficiently , so as to quicken the development of network education
    但粒子群算法仍存在如下不足:首先在多峰的情况下,粒子群有可能错过全局最优解,远离最优解的空间,最终得到局部最优解;其次在算法收敛的情况下,由于所有的粒子都向最优解的方向群游,所有的粒子趋向同一,失去了粒子间解的多样性,使得后期的收敛速度明显变慢,同时算法收敛到一定精度时,算法无法继续优化,本文对原始粒子群算法提出了二点改进方案: 1 .算法迭代到一定代数后,把此时找到的全局最优解当作速度更新公式的另一参数(本文称之为阶段最优解)再进行迭代; 2 .每次迭代过程中除最优解以外的每个粒子都有一定概率“变异”到一个步长以外的区域,其中“变异”的粒子在每一维上都随机生成一个步长。
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