Effective Tag Set Selection in Chinese Word Segmentation via Conditional Random Field Modeling

摘要

This paper is concerned with Chinese word segmentation, which is regarded as a character based tagging problem under conditional random field framework. It is different in our method that we consider both feature template selection and tag set selection, instead of feature template focused only method in existing work. Thus, there comes an empirical comparison study of performance among different tag sets in this paper. We show that there is a significant performance difference as different tag sets are selected. Based on the proposed method, our system gives the state-of-the-art performance.