Chinese word segmentation method for traditional Chinese medicine symptom sentence

The invention discloses a Chinese word segmentation method for traditional Chinese medicine symptom sentences. According to the word segmentation method, pre-screening is carried out through a segmentation word library and a frequent word library; further analysis is carried out through utilization of a forward conditional probability and a backward conditional probability; and for the condition which cannot be determined still, a final result is provided through synthesis of relative positions. According to the word segmentation method provided by the invention, for the particularity of the field of traditional Chinese medicine symptoms, the defect that a traditional Chinese word segmentation method is inapplicable to the field of the traditional Chinese medicine is effectively overcome, and the word segmentation accuracy and recall rate are relatively greatly improved. 本发明公开了种针对中医药症状句子的中文分词方法，该分词方法首先通过分割词库、频繁词库做预筛选，然后利用正向条件概率和逆向条件概率做进步分析，对于依旧不能确定的情况，再综合相对位置给出最后的结果。本发明分词方法有效地针对了中医药症状领域的特殊性，克服了传统中文分词方法不适用于中医药