文本挖掘中交叉熵算法实现,通过词汇左右出现的概率来计算交叉熵-Text mining cross entropy algorithm,The task of part2of2speech iden t if icat ion is to au tomat ically assign a part2of2speech tag to an unknow n wo rd w ith emp ty part2of2speech info r2 mat ion. A part2of2speech