Feature assembly method for extracting relations in Chinese
Feature assembly method for extracting relations in Chinese
复制标题
中文关系抽取的特征组装方法
DOI:
10.1016/j.artint.2015.07.003
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发表时间:
2015-11
影响因子:
14.4
通讯作者:
Chen, Ping
中科院分区:
文献类型:
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作者:
Chen, Yanping;Zheng, Qinghua;Chen, Ping
The goal of relation extraction is to detect relations between two entities in free text. In a sentence, a relation instance usually comprises a small number of words, which yields a sparse feature representation. To make better use of limited information in a relation instance, parsing trees and combined features are employed widely to capture the local dependencies of relation instances. However, the performance of parsing tree-based systems is often degraded by chunking or parsing errors. Combined features are used widely, but few studies have addressed how features can be combined to achieve optimal performance. Thus, in this study, we propose a feature assembly method for relation extraction. Six types of candidate features (head noun, POS tag, n-gram, omni-word, etc.) are employed as atomic features and six constraint conditions (singleton, position, syntax, etc.) are used to combine these features in different settings. Depending on the utilization of candidate features, different constraint conditions can be explored to achieve the optimal extraction performance. Our method is effective for capturing local dependencies and it reduces the errors caused by inaccurate parsing. We tested the proposed method using the ACE 2005 Chinese and English corpora, and it achieved state-of-the-art performance, where it was significantly superior to existing methods.
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DOI:
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发表时间:
2010-07
期刊:
--
影响因子:
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作者:
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通讯作者:
Zornitsa Kozareva;E. Hovy
影响因子:
9.1
作者:
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DOI:
10.3115/1219840.1219892
发表时间:
2005-06
期刊:
--
影响因子:
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通讯作者:
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DOI:
10.3115/1220835.1220872
发表时间:
2006-06
期刊:
--
影响因子:
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作者:
Min Zhang;Jie Zhang;Jian Su
通讯作者:
Min Zhang;Jie Zhang;Jian Su
DOI:
--
发表时间:
2004
期刊:
--
影响因子:
--
作者:
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Zhang Le