| 数值信息抽取研究进展综述 |
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| 引用本文： | 吴超,郑彦宁,化柏林.数值信息抽取研究进展综述[J].中国图书馆学报,2014,40(2):107-119. |
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| 作者姓名： | 吴超 郑彦宁 化柏林 |
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| 作者单位： | 中国科学技术信息研究所,北京 北京 100038;中国科学技术信息研究所,北京 北京 100038;北京大学信息管理系,北京 北京 100871 |
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| 摘 要： | 通过对数值信息抽取文献的调研,先从文献类型、学科领域、高频
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| 关 键 词： | 数值信息 数值知识元 数值信息抽取 命名实体识别 |
| 收稿时间： | 2013/5/28 0:00:00 |
| 修稿时间： | 2013/9/21 0:00:00 |
Numerical Information Extraction:A Review of Research |
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| Wu Chao,Zheng Yanning and Hua Bolin.Numerical Information Extraction:A Review of Research[J].Journal of Library Science In China,2014,40(2):107-119. |
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| Authors: | Wu Chao Zheng Yanning and Hua Bolin |
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| Abstract: | This paper first makes a quantitative analysis on the documents of numerical information extraction from three aspects:document type, subject area and high frequency keywords. Then the research context is summarized from four aspects:data source type, object for extraction, extraction method and technique, result evaluation and corresponding application. Our findings are as follows:news corpus and web pages are the main data sources; cardinal numbers and quantitative phrases are the main objects for extraction; extraction method and technique are mainly rule-based and the result evaluation indicators are relatively simple but have a wide scope for application. 4figs. 3tabs. 56refs. |
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| Keywords: | Numerical information Numeric knowledge element Numerical information extraction Named entity recognition |
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