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Event extraction method and system and computer readable storage medium

An event extraction and event technology, applied in computing, special data processing applications, instruments, etc., can solve the problem of low quality of event extraction results, and achieve the effect of avoiding low quality results, reducing workload, and improving accuracy

Active Publication Date: 2022-03-25
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

Method used

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  • Event extraction method and system and computer readable storage medium
  • Event extraction method and system and computer readable storage medium
  • Event extraction method and system and computer readable storage medium

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Embodiment Construction

[0055] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and implementation examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0056] see figure 1 , the first embodiment of the present invention provides an event extraction method, including the following steps:

[0057] S1: Input the original text and judge whether the original text contains preset event types;

[0058] 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;

[0059] S3: Process the event text to obtain the final structured event text.

[0060] It is understandable that in actual app...

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Abstract

The invention relates to the technical field of natural languages, in particular to an event extraction method and system and a computer readable storage medium, and the event extraction method comprises the following steps: inputting an original text and judging whether the original text contains a preset event type or not; if yes, obtaining an event type specific prefix and an event type template, and inputting the event type specific prefix, the event type template and the original text into an event extraction model to generate an event text; and processing the event text to obtain a final structured event text. According to the method, whether the input original text contains the preset event type or not is judged firstly, and if yes, event extraction is carried out to improve accuracy; different from a manual design task prompt method in a traditional generative event extraction method, the event type specific prefix parameterizes the design and can be automatically optimized through training, so that the problem of low quality of an event extraction result caused by manual design is avoided.

Description

technical field [0001] The present invention relates to the technical field of natural language processing, 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 the 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 subtasks, such as event trigger word extraction, entity extraction, event element extraction, etc.; then design a pipeline decoding framewor...

Claims

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Application Information

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Patent Type & Authority Applications(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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