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） -Based on the segmentation of the reverse maximum matching algorithm and the HMM-based POS tagging system, including unadvertised login word recognition, and add the database co