Method and system for constructing emotional dictionary

Abstract

The invention discloses a method and a system for constructing an emotional dictionary and belongs to the field of natural language processing. According to the method and system for constructing the emotional dictionary, a large number of emotion words can be obtained by searching the synonym cilin and presetting a few seed words so as to obtain the expanded seed word set; the emotion tendency value SO of the words is calculated according to the PMI value of the words in the evaluating corpus and the seed words as well as the property of the words; and the emotion polarity and emotion tendency degree of the words are obtained according to the positive and negative of the SO value and the absolute value so as to select the words to construct the emotional dictionary according to the preset amount. By using the method and system provided by the invention, the emotion words are searched and determined automatically, thereby saving manpower and material resources. In addition, the emotional dictionary is constructed by selecting words with stronger emotion tendency degree and by calculating the PMI value and the SO value, thereby improving the precision for constructing the emotionaldictionary.

Description

technical field [0001] The invention relates to the field of natural language processing, in particular to a method and system for constructing an emotional dictionary. Background technique [0002] With the rapid popularization of informatization, the network has been widely used. Through network platforms such as forums, blogs, and microblogs, people can publish text information on various views and opinions on people, events, and products. In order to effectively process this information, text sentiment analysis is required. Among them, the text that needs sentiment analysis is called evaluation corpus. In the process of sentiment analysis, a very important point is to build a sentiment dictionary. [0003] Constructing an emotional dictionary is a basic task in the process of text sentiment analysis. When constructing an emotional dictionary, the emotional polarity of words is the basis of the sentiment classification method. According to the emotional polarity of words,...

AI Technical Summary

Problems solved by technology

[0006] In view of this, the purpose of the present invention is to provide a method for constructing an emotional dictionary to solve the problems of spending a lot of manpower, material resources, or low precision in the method for constructing an emotional dictionary in the prior art. The specific implementation is as follows :

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