基于逆向最大匹配算法的分词及基于HMM模型的词性标注系统，包括了未登录词的识别、数据库的添加等内容。（需要手动修改数据库的路径才可以运行）-Reverse Maximum Matching Algorithm Based on the sub-word HMM-based model and part of speech tagging system, including the unknown word identification, such as the contents of the d