遗传地

The heuristic method emploies a genetic algorithm in reducing the redundant attributes of all attributes. Besides taking fitness function as its heuristic function for its selection operation, the genetic algorithm uses the attribute\'s information entropy to construct the heuristic function for its mutate operation, and in this way it markedly elevate the convergence speed of attribute reduction.

启发式方法采用遗传算法进行属性约简，除了存在于选择操作的适应度启发函数外，还在变异操作中以信息熵为基础构造了启发函数；穷举方法基于循环队列自底向上约简，通过剪枝有效地提高了属性约简集的穷举速度。

Sperm spend waiting in the testicles.The Newcastle study, by Dr Corry Gellatly, is strong evidence that there is a genetic component.

由柯瑞。杰拉特医生主持的钮卡斯尓大学的研究有力地表明生育的性别与遗传因素有关。

Moreover, by introducing memory function and vaccine inoculation mechanism of immune system, at the same time, DECA can converge to the optimal solution rapidly and stably.

通过改进的遗传策略来优化染色体长度，实现对聚类个数进行全局寻优，利用FCM算法加快聚类中心参数的收敛；并引入免疫系统的记忆功能和疫苗接种机理，使算法能快速稳定地收敛到最优解。

The clustering dendrograph drawn by a of method of neighbor-joining can clearly reflect the geography distribution, the feature of genetics differentiation,and genetic relationships among eight cattle populations.

由邻结法绘制的系统聚类图能清晰、客观地反映8个肉牛群体的地理分布、遗传分化特点，以及亲缘关系远近程度。

A eugenic evolution strategy genetic algorithm,which integrates random evolution operation and deterministic optimization operation,is adopted in this paper to realize global optimization in high efficiency.

采用优进遗传算法，将确定性与随机性寻优操作相融合，实现了高效全局搜优，它所基于的优进策略包括设计Powell寻优算子、改进交叉算子、自适应地调整交叉率和变异率等。

In this paper, the principles and method of genetic algorithm were successfully applied in power market generation dispatching.

本文成功地将遗传算法的基本原理和方法应用于电力市场有功调度运行中。

In order to solve non-identical parallel machine earliness/tardiness scheduling problem with different due windows,a hybrid genetic algorithm based on sectional coding is suggested.

为有效地解决不同交货期窗口下的非等同并行多机提前/拖后调度问题，设计了一种分段编码的混合遗传算法。

The algorithm has the effective suppression of delayed convergence, so the satisfiability of formula can be assigned rapidly.

这种遗传算法有效地抑制了算法的延迟收敛，从而保证了为可满足性公式能够快速找到一个可满足性指派。

Some improved strategies are adopted for genetic operators to ensure convergence and the effective search of the model space.

该文在保证算法收敛和最大限度地搜索模型空间的基础上，对遗传算子采取相应策略进行改进，并通过界约束增加解的稳定性。

Research advances on the biological and ecological characteristics of P.japonica are summarized in this paper, which includes the variation in elytra color polymorphism, life history, fecundity, appetite, predation, over-wintering habits, artificial rearing technique, and population dynamics under natur...

本文从龟纹瓢虫的生物学和生态学特性，包括色斑变型、生活史、繁殖、食性、越冬、人工饲养、田间动态以及在生物防治上的应用等方面概述了龟纹瓢虫的研究进展，提出进一步深入开展龟纹瓢虫的人工饲养技术、贮藏技术和色斑变型遗传机制等的研究，不仅可以更好地为农业生产服务，而且可以充实昆虫生态位理论的研究内容。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。