A bracket(括号) sequence is a string containing only characters "(" and ")".A regular bracket sequence is a bracket sequence that can be transformed into a correct arithmetic expression by inserting characters "1" and "+&q
1)知识简介--------------------------------------------------------1.1)测序质量值 首先在了解fastq,fasta之前,了解一下什么是质量值.phred软件在对reads进行base calling的时候会给出每一个碱基的质量值,这个质量值的计算与测序预期错误率相关(estimated probability of error): Phred Quality Score Probability of incorrect bas