Nested entity identification method and apparatus, electronic device and storage medium

Abstract

Embodiments of the invention provide a nested entity identification method and apparatus, an electronic device and a storage medium. The method comprises the steps: determining a to-be-identified text; inputting the to-be-identified text into a nested entity recognition model to obtain a simple entity recognition result and a nested entity recognition result output by the nested entity recognitionmodel that is obtained by training based on a sample text, a sample simple entity recognition result corresponding to the sample text and a sample nested entity recognition result; and using the nested entity recognition model for determining a simple entity recognition result based on the to-be-identified text and determining a nested entity recognition result based on the to-be-identified textand the simple entity recognition result. According to the nested entity identification method and apparatus, the electronic equipment and the storage medium provided by the embodiment of the invention, identification of the nested entity and the internal simple entity thereof can be realized by only one model, and the nested relationship between the nested entity and the internal simple entity thereof is displayed.

Description

technical field [0001] The present invention relates to the technical field of natural language processing, in particular to a nested entity recognition method, device, electronic equipment and storage medium. Background technique [0002] As an important step in natural language processing, entity recognition is widely used in tasks such as information extraction, information retrieval, and information recommendation. Due to the diversity of natural language, there are nested entities in a large number of texts. Here, a nested entity refers to a situation in which one entity is formed as a whole, and several simple entities are contained inside it. Therefore, in order to correctly identify nested entities, it is necessary to recognize the nested relationship between the nested entities in the text and the simple entities inside them. [0003] However, the existing technologies usually use sequence tagging models for entity recognition, and the existing sequence tagging mo...

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a nested entity recognition method, device, electronic device and storage medium to solve the problem that existing sequence labeling methods cannot recognize both nested entities and simple entities within them

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