EM(maximization algorithm)算法寻找蛋白质motif

这是一道课程作业：给出了2000条蛋白质序列，每条长度为50，要求使用EM算法寻找其中的motif（假设motif长度为7）. Expectation Maximization (EM) Algorithm EM is a two-stage iterative process. An initial guess is made as to the location and size of a s

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