Event extraction system and method oriented to open domain

An event extraction and event technology, applied in natural language data processing, special data processing applications, instruments, etc., can solve problems such as poor performance of event extraction and field incompatibility, and achieve good field adaptability, abstract learning ability, and characteristics. more effect

Inactive Publication Date: 2017-07-14
BEIHANG UNIV
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Problems solved by technology

When applying these methods to other fields, it often shows the phenomenon of domain inadap

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  • Event extraction system and method oriented to open domain
  • Event extraction system and method oriented to open domain
  • Event extraction system and method oriented to open domain

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Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0034] Such as figure 1 As shown, the present invention includes: a preprocessing module, a trigger word recognition module, an event parameter recognition module, an event graph analysis module, and an event extraction display module; a preprocessing module: preprocessing raw data information, including removing redundant tags, analyzing Sentence, word segmentation, index building, etc.; trigger word recognition module: the trigger word recognition part is based on the convolutional neural network for trigger word recognition. First, train through labeled data to obtain a specific extraction model, and then trigger new data based on the model Word recognition; event parameter recognition module: identify event parameters based on the graph model, the extraction of event parameters is transformed into a specific graph segmentation problem, and event p...

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Abstract

The invention relates to an event extraction system and method oriented to an open domain. The system comprises a preprocessing module, a trigger word identification module, an event parameter identification module, an event atlas analysis module and an event extraction display module, wherein the preprocessing module preprocesses original data information; the trigger word identification module carries out trigger word identification on the basis of a convolutional neural network; the event parameter identification module carries out event parameter identification on the basis of a graph model, the extraction work of an event parameter is converted into a specific graph segmentation problem, and the event parameter is obtained through segmentation; the event atlas analysis module analyzes trigger word identification results and event parameter identification results to obtain the same kind of events; and the event extraction display module carries out visual display on an analysis result so as to bring convenience for users to obtain information. By use of the system, the difficulty that news information can be quickly obtained under a big-data environment is solved, and the user can obtain a news event related to a keyword according to the keyword input on the own so as to provide great convenience for information acquisition.

Description

technical field [0001] The invention relates to an open domain-oriented event extraction system and method, belonging to the technical field of natural language processing. Background technique [0002] With the rapid development of the Internet, resources on the Internet have shown explosive growth. Among these resources, news information occupies an important part, and the ways for people to obtain news information have been greatly expanded. However, in the face of so much information, how to let people quickly obtain interesting content has become a The primary question that researchers need to face. Under the guidance of such requirements, researchers put a lot of energy into information extraction. [0003] Information Extraction refers to the automatic extraction of structured information from unstructured sources, such information can be entities, entity relationships, entity attributes, etc. Event Extraction (Event Extraction) is a more complex form of informatio...

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Application Information

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IPC IPC(8): G06F17/30G06F17/27
CPCG06F16/367G06F16/951G06F40/289
Inventor 张永强巢文涵李舟军
Owner BEIHANG UNIV
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