Online public opinion analysis method and system considering topic discovery and sentiment analysis

A sentiment analysis and network public opinion technology, applied in semantic analysis, text database clustering/classification, special data processing applications, etc., can solve problems such as low accuracy of sentiment analysis and unclear detection of hot topics

Active Publication Date: 2021-03-02
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To sum up, the existing public opinion analysis methods have the following defects: hot topic detection is not clear; sentiment analysis accuracy is not high

Method used

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  • Online public opinion analysis method and system considering topic discovery and sentiment analysis
  • Online public opinion analysis method and system considering topic discovery and sentiment analysis
  • Online public opinion analysis method and system considering topic discovery and sentiment analysis

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Embodiment Construction

[0064] In order to make the purpose, technical effects and technical solutions of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments It is a part of the embodiment of the present invention. Based on the disclosed embodiments of the present invention, other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall all fall within the protection scope of the present invention.

[0065] see figure 1 , a kind of network public opinion analysis method based on emotion vector space model of the embodiment of the present invention, comprises the following steps:

[0066] Step 1, text preprocessing:

[0067] 1.1) First, use Fiddler+HttpClient+Jsoup comprehensive technology for HTTP communication to collect...

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Abstract

The invention discloses an online public opinion analysis method and system considering topic discovery and sentiment analysis, and the method comprises the following steps: 1, obtaining a topic of ato-be-analyzed online public opinion text based on a trained BiMPM topic discovery model or LLDA topic model based on an ELMo word vector; and 2, performing sentiment analysis on the topic obtained inthe step 1 based on a vector space model. Aiming at the characteristics of different public opinion carriers, LLDA and a BiMPM topic discovery model based on ELMo word vectors are adopted to discovertopics of long and short texts; large-scale manual annotation corpora and training modeling are introduced, a training model with excellent performance indexes such as accuracy and recall rate is generated, and efficient topic discovery is achieved.

Description

technical field [0001] The invention belongs to the technical field of data mining, relates to the field of topic models and clustering methods, and in particular relates to a network public opinion analysis method and system that takes both topic discovery and sentiment analysis into consideration. Background technique [0002] Internet public opinion is the sum of the public's attitudes and opinions on social hot issues on the Internet platform, which reveals strong emotional tendencies. It expands the space for freedom of speech, informationizes the content of speech, and triggers socially sensitive topics. Social emotions are difficult to dispel in a short period of time. The public opinion analysis system is a comprehensive use of search engine technology, text processing technology, knowledge management methods, natural language processing, and mobile phone short message platform, through the automatic acquisition, extraction, classification, clustering, topic monitori...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/35G06F40/289G06F40/247G06F40/216G06F40/30
CPCG06F16/355G06F40/289G06F40/247G06F40/216G06F40/30Y02D10/00
Inventor 曲宇航赵昕禹惠维
Owner XI AN JIAOTONG UNIV
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