Method for extracting event argument in text and electronic equipment

Abstract

The invention relates to a method for extracting an event argument in a text and electronic equipment, and the method comprises the steps: detecting an event type contained in a to-be-processed text, and obtaining a target event type; constructing and obtaining an argument extraction problem according to the target event type and the prior association information of the corresponding target argument role; splicing the to-be-processed text and the argument extraction problem to obtain a target text; the representation vector of the target text is input into a machine reading understanding model, the model comprises two layers of classifiers which are arranged in sequence, the first layer of classifier synchronously identifies and predicts whether an answer exists in the target text or not and identifies and predicts the starting position and the ending position of the answer, and a position prediction result carrying an answer indication label is obtained; the second-layer classifier predicts whether the prediction entity is an event argument or not after the start position and the end position are paired and combined, and an answer prediction result is obtained; and outputting the event argument according to the answer prediction result and the corresponding label.

Description

technical field [0001] The disclosure relates to the field of text data processing and artificial intelligence technology, and in particular to a method and electronic equipment for extracting event arguments in text. Background technique [0002] In the face of massive information, how to mine useful information from massive text data has become an important issue. A lot of information generally exists in the form of events, and event extraction is to extract specific types of event trigger words and corresponding event arguments from a large amount of unstructured text and present them in a structured form. an important task. [0003] In the process of realizing the concept of the present disclosure, it is found that there are at least the following technical problems in related technologies: when extracting event arguments, there is a scene where one argument role corresponds to multiple argument entities and arguments are nested entities. The current method cannot Accu...

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Problems solved by technology

[0003] In the process of realizing the concept of the present disclosure, it is found that there are at least the following technical problems in related technologies: when extracting event arguments, there is a scene where one argument role corresponds to multiple argument entities and arguments are nested entities. The current method cannot Accurate extraction of arguments for the above two scenarios; cascaded extraction first extracts candidate arguments, and then classifies candidate arguments, there is a problem of error transmission

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