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The Origin and Evolution of Chinese Goat and Cattle Based on mtDNA Genetic Diversity

中国山羊、黄牛线粒体DNA遗传多样性与起源进化

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2、

Training networks combining genetic algorithm ( GA) based on global optimization with backpropagation ( BP) based on gradient descent in the paper make the linking weights of networks self-adaptive evolution in constantly iterative process.

本文采用全局寻优的遗传算法(GA)和基于梯度下降的局部寻优反传算法(BP)相结合来训练网络,使网络的连接权在不断迭代过程中自适应演化。

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Compared with the genetic algorithm, the hybrid optimization strategy GATS increased the diversity of the individuals, and the evolution process as well as sinking into the local minimal solution.

与遗传算法相比,混合优化策略GATS增加了种群多样性,加速了进化过程,避免陷入局部极小解。

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Researchers at the Foundation for Applied Molecular Evolution in Florida have created an alternative genetic code with synthetic DNA that has six chemical letters instead of the four letters of natural DNA.

在佛罗里达的应用分子进化基金会(Foundation for Applied Molecular Evolution),研究者们借助合成DNA,创造出一种另类基因代码。合成DNA有6个化学字母而不是自然DNA的4个字母。

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the mixed encoding schema of binary and real value code not only retains the advantages of traditional genetic method but also gains the advantages of evolutionary programming and evolution strategies.

这种新方法的创新在于:二值码串和实值码串的混合编码方法即保留了传统遗传算法的优点,又具有遗传编程和遗传策略的优点;

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Conclusion As an important and stable genetic marker, DYS 287 can provide reliable evidence in evolution study.

结论DYS287位点可以作为一种重要、稳定的遗传标记对遗传多样性研究提供可靠的证据.

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Evolutionary algorithm mainly include Genetic Algorithms ( GAs ) , Evolution Strategies and Evolutionary Programming ( EP ).

进化算法主要包括 遗传 算法 、 进化策略和进化规划.

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Random genetic drift has certainly played a big role in human evolution.

随机遗传漂变在人类进化过程中无疑起到了很大的作用.

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Moreover, " genetic drift 、 the neutral theory and molecular evolution " also are brought into the system of curriculum content.

另外, 把 “ 遗传漂变、中性学说和分子进化 ” 也纳入课程内容体系中.

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The genetic algorithm is a global optimizing method which imitates biological evolution.

遗传算法是一种模拟生物进化规律的全局优化算法.

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So an improved Differential Evolution Acceleration Genetic Algorithm ( DE-AGA ) was proposed.

为此,结合差分进化算法,提出了一种改进的差分加速遗传算法 ( DE-AGA ) .

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The optical genetic and thermal evolution characteristics of vitrinite-like macerals are different from solid bitumen;

镜状体的光性特征、成因特征和热演化特征均不同于固体沥青;

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Finally, a review is made on the genetic relationships between mineralization and magma evolution and the associated characteristic of ore systems.

文中还介绍了层状岩体中典型矿床的成矿作用与岩浆演化过程的成因联系。

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Diversity Enhancing Genetic Algorithm ( DEGA) is presented to prevent premature convergence of GA, which introduced the ideas of affinity from immune system and cataclysm from biologic evolution process.

引入免疫系统亲和度的概念和生物进化过程中的灾变概念,提出一种强多样性的遗传算法来克服早熟收敛。

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Some of them show clear cutting relationship and genetic linkage. The Dongshan Complex, with a long history of geological evolution, provides a typical example for the study of the Anshan early Archaean crustal evolution.

部分类型岩石之间存在清楚的切割关系,在组成上具有成因联系,表明了该杂岩长期的地质演化历史,为鞍山地区太古宙早期地壳演化提供了一个典型实例。

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The ratio of biomass up-ground and BSW were no significant changes at different growth stages, this result showed that root and up-ground parts were coordinated evolution in genetic improvement of soybean cultivars.

地上部分生物量与根系伤流液重量的比值在各时期均无明显变化,表明大豆品种的遗传改良过程中地下根系与地上部分器官是协同演进的。

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Genetic algorithm ( GA ) is a random search method based on the biological evolution.

遗传 算法是一种根据生物进化思想而产生的随机搜索算法.

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genetic algorithms is a novel stochastic optimization technique which simulates the natural evolution process.

遗传算法是一种模仿自然进化进程的新颖的启发式优化方法.

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The ancient DNA ( aDNA), the most important genetic information of ancient human, has been widely used in the studies of human origin, evolution, racial character, migration and diseases, and herefrom the molecular archaeology has developed rapidly.

古DNA是古代人类最重要的遗传信息载体,已用于人类起源、进化、族群特征、迁移、古代人类疾病等方面的研究,由此导致了分子考古学的兴起。

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