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Problem Figure 2. The Hamming distance between these two strings is 7. Mismatched symbols are colored red. Figure 2. The Hamming distance between thes 阅读全文
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Problem The GC-content of a DNA string is given by the percentage of symbols in the string that are 'C' or 'G'. For example, the GC-content of "AGCTAT 阅读全文
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Problem A sequence is an ordered collection of objects (usually numbers), which are allowed to repeat. Sequences can be finite or infinite. Two exampl 阅读全文
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Problem In DNA strings, symbols 'A' and 'T' are complements of each other, as are 'C' and 'G'. The reverse complement of a DNA string ss is the string 阅读全文
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Problem An RNA string is a string formed from the alphabet containing 'A', 'C', 'G', and 'U'. Given a DNA string tt corresponding to a coding strand, 阅读全文
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Problem A string is simply an ordered collection of symbols selected from some alphabet and formed into a word; the length of a string is the number o 阅读全文
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001 'GATCCAGATCCCCATAC', 计算这串数列中两个出现最高的频率。 002 Reverse Complement Problem: Find the reverse complement of a DNA string. Input: A DNA string Pattern. O 阅读全文
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PCA的数学原理(转) 1 年前 PCA(Principal Component Analysis)是一种常用的数据分析方法。PCA通过线性变换将原始数据变换为一组各维度线性无关的表示,可用于提取数据的主要特征分量,常用于高维数据的降维。网上关于PCA的文章有很多,但是大多数只描述了PCA的分析过程 阅读全文
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有什么特征可以帮助我们来区分导致功能和表型变化的变异和其他变异,然后我们如何综合特征来做出一个预测模型?表型或功能的改变(phenotypical/functional effect)a,个体表型上的体现(导致疾病的或不导致疾病的)b,演化上的概念(它是不是会影响这个人的适应性,deleteriou 阅读全文
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名称 bwa – Burrows-Wheeler Alignment Tool 内容摘要描述命令行与选项SAM 比对格式短序列比对注意事项 比对精确性 估计插入大小分布 内存需求 速度Bwa-0.6中的改变其他作者引用与授权历史 摘要 b w a i n d e x r e f . f ab w a 阅读全文