Parsing the Penn Chinese Treebank with semantic knowledge

被引：0
|
作者：
Xiong, DY
Li, SL
Liu, Q
Lin, SX
Qian, YL
机构：
[1] Chinese Acad Sci, Comp Technol Inst, Beijing 100080, Peoples R China
[2] Univ Sci & Technol Beijing, Beijing 100083, Peoples R China
[3] Chinese Acad Sci, Grad Sch, Beijing, Peoples R China
来源：
NATURAL LANGUAGE PROCESSING - IJCNLP 2005, PROCEEDINGS | 2005年 / 3651卷
关键词：
D O I：
暂无
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
We build a class-based selection preference sub-model to incorporate external semantic knowledge from two Chinese electronic semantic dictionaries. This sub-model is combined with modifier-head generation sub-model. After being optimized on the held out data by the EM algorithm, our improved parser achieves 79.4% (F1 measure), as well as a 4.4% relative decrease in error rate on the Penn Chinese Treebank (CTB). Further analysis of performance improvement indicates that semantic knowledge is helpful for nominal compounds, coordination, and NoV tagging disambiguation, as well as alleviating the sparseness of information available in treebank.
引用
收藏
页码：70 / 81
页数：12
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