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An event extraction method, system and computer-readable storage medium

An event extraction and event technology, applied in computing, unstructured text data retrieval, instruments, etc., can solve the problem of low quality of event extraction results, and achieve the effects of avoiding low quality results, improving accuracy, and reducing workload

Active Publication Date: 2022-06-21
北京澜舟科技有限公司
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Problems solved by technology

[0004] In order to solve the problem of low quality of event extraction results, the present invention provides an event extraction method, system and computer-readable storage medium

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  • An event extraction method, system and computer-readable storage medium
  • An event extraction method, system and computer-readable storage medium
  • An event extraction method, system and computer-readable storage medium

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Embodiment Construction

[0060] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and implementation examples. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0061] see figure 1 , the first embodiment of the present invention provides an event extraction method, including the following steps:

[0062] S1: Input the original text and determine whether the original text contains the preset event type;

[0063] S2: If yes, obtain the event type-specific prefix and event type template, and input the event type-specific prefix, event type template and original text into the event extraction model to generate event text;

[0064] S3: Process the event text to obtain the final structured event text.

[0065] Understandably, in practical...

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Abstract

The present invention relates to the field of natural language technology, in particular to an event extraction method, system and computer-readable storage medium, an event extraction method, including the following steps: input original text and determine whether the original text contains a preset event type; if , obtain the event type-specific prefix and event type template, input the event type-specific prefix, event type template and original text into the event extraction model to generate event text; process the event text to obtain the final structured event text. The present invention first judges whether the input original text contains a preset event type, and if so, then performs event extraction to improve accuracy; different from the method of artificially designing task prompts in the traditional generative event extraction method, the unique prefix of the event type will The design is parameterized and can be automatically optimized through training, thus avoiding the problem of low quality of event extraction results caused by artificial design.

Description

technical field [0001] The present invention relates to the technical field of natural language processing, and in particular, to an event extraction method, system and computer-readable storage medium. Background technique [0002] Event recognition and extraction studies how to identify and extract event information from text describing event information and present it in a structured form, including its occurrence time, place, participating roles, and related actions or state changes. An event contains multiple elements such as event trigger words and event participation elements. Existing event extraction methods are mainly divided into two categories: extractive event extraction methods and generative event extraction methods. The extraction method regards event extraction as an extraction problem, and divides event extraction into many different sub-tasks, such as event trigger word extraction, entity extraction, event element extraction, etc.; then design a pipeline ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F40/186G06F16/35G06F40/216
CPCG06F40/186G06F16/35G06F40/216
Inventor 马永亮石戈周明
Owner 北京澜舟科技有限公司
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