Fine-grained sentiment analysis method based on position enhancement

A sentiment analysis, fine-grained technology, applied in the field of information processing, can solve problems such as low accuracy, achieve the effect of improving efficiency, enhancing text semantic representation ability and information interaction, and improving accuracy

Pending Publication Date: 2021-11-26
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of low accuracy caused by fine-grained sentiment analysis of text in the p

Method used

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  • Fine-grained sentiment analysis method based on position enhancement
  • Fine-grained sentiment analysis method based on position enhancement
  • Fine-grained sentiment analysis method based on position enhancement

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Embodiment Construction

[0059] Specific embodiments of the present invention are described in further detail, and the following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0060] The present invention uses the public data sets of the computer notebook field and the restaurant field and the multi-faceted emotion data set MAMS included in the semantic evaluation competition SemEval-2014 Task4 as the training corpus of the model to verify the validity of the model. Its specific implementation steps are as follows:

[0061] Step 1 text preprocessing

[0062] First, text preprocessing is performed on the training corpus, and the processing steps are as follows:

[0063] (1) Case conversion: Convert all existing uppercase letters to lowercase letters.

[0064] (2) Word Segmentation: Use the general language word segmentation module to segment the text data set.

[0065] (3) Remove stop words: remove some meaningless words in ...

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Abstract

The invention provides a fine-grained sentiment analysis method based on position enhancement, which is used for solving the problem of low precision caused by performing fine-grained sentiment analysis on a text in the prior art. Firstly, a text is preprocessed, and then sentiment analysis is carried out through a fine-grained sentiment analysis model. The model comprises an embedding layer, a semantic representation layer, an information interaction layer and an output layer. The embedding layer is used for mapping sentences into context word embedding and aspect word embedding, the semantic representation layer is used for enhancing the text semantic representation capability of a model through a position intensified attention mechanism, and the information interaction layer is used for enhancing the interactivity between aspect words and contexts of the aspect words by using a memory network; and the aspect-based context semantic enhancement representation is used as an external memory unit interacting with the aspect, so that the external memory unit can learn semantic information in a complex text, and finally an output layer performs emotion prediction. According to the method, the context range for performing emotion expression on the aspect is reasonably defined, so that the fine-grained emotion analysis accuracy is improved.

Description

technical field [0001] The invention belongs to the technical field of information processing, and is a fine-grained emotion analysis method based on location enhancement. Background technique [0002] The rapid development of social networks and e-commerce shopping platforms makes it easier for people to express their views and opinions on the network platform, thus generating a large amount of text data containing user emotional information, which contains huge practical value. And products have multi-dimensional attributes, and consumers will comment on products and services from different angles, such as quality, price and service. The traditional text sentiment analysis technology usually gives an emotional judgment as a whole, which cannot meet the needs of different aspects of the emotional orientation judgment in the comment text, so the granularity of text sentiment analysis needs to be more refined. For example, in the sentence "The food in this restaurant is deli...

Claims

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Application Information

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IPC IPC(8): G06F40/211G06F40/289G06F40/30G06K9/62G06N3/04G06F16/33
CPCG06F40/289G06F40/30G06F40/211G06F16/3344G06N3/044G06F18/214
Inventor 刘磊侯良文焦一狄李静
Owner BEIJING UNIV OF TECH
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