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Method and system for extracting Chinese event

An event extraction, Chinese technology, applied in special data processing applications, instruments, electronic digital data processing and other directions, can solve the problem of Chinese event extraction and other problems can not be well solved

Inactive Publication Date: 2012-09-26
平江县鑫晟信息科技有限公司
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Problems solved by technology

[0004] In view of this, the present invention provides a Chinese event extraction method and system to solve the problem that the English event extraction method cannot well solve the problem of Chinese event extraction

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  • Method and system for extracting Chinese event
  • Method and system for extracting Chinese event

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Embodiment Construction

[0054] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0055] In English, a word or phrase is usually composed of multiple letters, and one letter in a word cannot express meaning. Different from English, the words that make up a Chinese phrase often have their own semantics, and in most cases, the semantics of the phrase can also be combined from the semantics of the words that make it up, which is the combined semantics. Based on this feature of Chinese, the unknown event trigger words in the test corpus can be ...

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Abstract

The invention provides a method and a system for extracting a Chinese event. The method comprises the following steps of: performing phrasing, word-splitting, entity identification and analysis for syntax and dependence relationship on a text with a to-be-extracted event in turn; marking the words meeting an extracting condition as candidate triggering words, according to internal structures of the words; filtering the triggering words meeting a filtering condition according to the probability, the word class and the internal structures of the words; extracting the triggering words by utilizing the maximum entropy identifying model and obtaining the reliability of each of the triggering words; dividing the triggering words into a consistency processing training set and a consistency processing testing set according to the reliability of each of the triggering words; utilizing a maximum entropy classifier to extract the triggering words from the consistency processing testing set; and utilizing a maximum entropy classifying model to classify the triggering words, thereby obtaining an event set. According to the method and the system provided by the invention, started from the characteristics of Chinese, the internal structures of Chinese words and the semantic consistency of the Chinese words in sections and chapters are comprehensively considered and analyzed, so that the property of extracting the Chinese event is increased.

Description

technical field [0001] The invention relates to the field of natural language processing, in particular to a method and system for extracting Chinese events. Background technique [0002] Event extraction is one of the main forms of information extraction. It extracts structured event information that people are interested in from a large amount of natural text, such as who, where, when, and what they did. [0003] At present, the extraction method of Chinese events is mainly achieved by borrowing some English event extraction methods and technologies. It is hoped that by transplanting these methods and technologies, the purpose of Chinese event extraction can be achieved. Although this method has achieved good results, Chinese Its own characteristics determine that completely copying the English event extraction method is not enough to solve the extraction of Chinese events well. Contents of the invention [0004] In view of this, the present invention provides a Chinese...

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Application Information

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IPC IPC(8): G06F17/27
Inventor 李培峰朱巧明周国栋朱晓旭
Owner 平江县鑫晟信息科技有限公司
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