EM 算法一个例子 EM in R 参考以下网页并翻译,其中变量稍作修改。 http://rstudio-pubs-static.s3.amazonaws.com/1001_3177e85f5e4840be840c84452780db52.html 假设: 有一枚硬币,以25%的概率面朝上(heads), 75%的概率面朝下(tails). 如果面朝上,服从均值为1,标准方差为1 的正态分布, ...
Contact Number: The contact number of an amino acid residue in a protein structure is defined by the number of C(beta) atoms around the C(beta) atom of the given residue, a quantity similar to, but different from, solvent accessible surface area. from: http://www.ncbi.nlm.nih.gov ...
subprocess 模块, 可以用来调用其他程序,如shell 等。 这个模块将来会替代之前老模块如os.system d等。 The subprocess module allows you to spawn new processes, connect to theirinput/output/error pipes, and obtain their return codes. This module intends toreplace several older modul ...