Named entity identification method and device

A named entity recognition and named entity technology, applied in the information field, can solve problems such as many abbreviations, short sentences, and low accuracy of named entity recognition

Active Publication Date: 2019-06-11
BOE TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Compared with the named entity recognition in the general field, the named entity recognition of Chinese electronic medical records is not accurate due to the short sentences and many abbreviations in the electronic medical records.

Method used

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  • Named entity identification method and device
  • Named entity identification method and device

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Embodiment Construction

[0042] In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0043] Embodiments of the present invention aim at the problem of low accuracy of named entity recognition in Chinese electronic medical records in the prior art, and provide a method and device for named entity recognition, which can improve the accuracy of named entity recognition.

[0044] Embodiments of the present invention provide a named entity recognition method, such as figure 1 shown, including:

[0045] Step 101: Obtain training data, the training data includes training text, marked named entities in the training text and corresponding entity types;

[0046] The named entities in the training text can be manually marked in advance, and the entity types corresponding to the named entities can be marked at the same time. For...

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Abstract

The invention provides a named entity identification method and device, and belongs to the technical field of information. The named entity recognition method comprises the steps that training data are acquired, and the training data comprise a training text, named entities in the marked training text and corresponding entity types; the method comprises the following steps of converting words andcharacters in the training text into word vectors and character vectors respectively, training a preset long-short-term memory model by using the word vectors and the character vectors, and outputtingfeature vectors; optimizing a preset conditional random field model by utilizing the feature vector, the marked named entity and the corresponding entity type; And performing named entity identification on to-be-processed data by using the long short-term memory model and the conditional random field model. According to the technical scheme, the named entity identification precision can be improved.

Description

technical field [0001] The present invention relates to the field of information technology, in particular to a named entity recognition method and device. Background technique [0002] Named entity recognition refers to the identification of entities with specific meaning in text, mainly including names of people, places, institutions, proper nouns, etc. In the medical field, automatic identification of named entities from electronic medical records plays an important role in the construction of medical knowledge bases and clinical decision support. Compared with the named entity recognition in the general field, the named entity recognition of Chinese electronic medical records is not accurate because of the short sentences and many abbreviations in the electronic medical records. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a named entity recognition method and device, which can improve the accuracy of nam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/27
CPCG06F40/295G06F40/205G06N5/022G06N5/01G06N7/01G06N3/044G06F18/24G06N3/08G06F18/214
Inventor 张露
Owner BOE TECH GRP CO LTD
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