一种基于动态词典和三支决策的情感分析方法

doi:10.6040/j.issn.1672-3961.1.2014.250

山东大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (1): 19-23.doi: 10.6040/j.issn.1672-3961.1.2014.250

一种基于动态词典和三支决策的情感分析方法

周哲^1,2, 商琳^1,2

1. 南京大学计算机科学与技术系, 江苏南京 210046;
2. 南京大学计算机软件新技术国家重点实验室, 江苏南京 210046

收稿日期:2014-05-23 修回日期:2014-10-15 发布日期:2014-05-23
通讯作者: 商琳(1973-),女,江苏南京人,博士,副教授,主要研究方向为数据挖掘,人工智能和粗糙集.E-mail:shanglin@nju.edu.cn E-mail:shanglin@nju.edu.cn
作者简介:周哲(1991-),男,江苏南京人,硕士研究生,主要研究方向为文本情感分析.E-mail:mahirunozuki1@gmail.com
基金资助:
国家自然科学基金面上项目(61170180)

A sentiment analysis method based on dynamic lexicon and three-way decision

ZHOU Zhe^1,2, SHANG Lin^1,2

1. Department of Computer Science and Technology, Nanjing University, Nanjing 210046, Jiangsu, China;
2. State Key Laboratory for Novel Software Technology, Nanjing University, Nanjing 210046, Jiangsu, China

Received:2014-05-23 Revised:2014-10-15 Published:2014-05-23

摘要/Abstract

摘要： 提出了一种新的特征提取方式,与三支决策思想相结合,运用在文本情感分析中,以提高分类器的效率。根据训练集合创建动态情感词典,然后根据情感词典提取文本的抽象特征,形成特征矩阵。在分类过程中,如果分类器对于目标文本的所属分类确信程度不够高,那么分类器会利用三支决策的思想,将文本置于边界域中,等待别的处理方法。实验结果表明,在英文影评数据集上,基于动态词典的特征提取方法可以取得更好的分类准确率,而且三支决策规则可将一些样例放入边界域,提高了分类准确率。

关键词: 情感分析, 三支决策, 文本数据挖掘, 特征抽取, 观点挖掘

Abstract: A new way of feature extraction and the concept of three-way decision was utilized in traditional text sentiment analysis methods in order to boost the classification accuracy. In the new method, a dynamic lexicon was introduced according to the training set and was utilized to extract abstract features for every piece of text to form the feature matrix. Besides, in the classification process, target texts with which the classifier had low confidence of sentiment labels were put into the boundary region for later decision. Experimental results showed that the method reached better results with the help of dynamic sentiment lexicon, and the three-way decision also raised the accuracy of classification.

Key words: text data mining, three-way decision, sentiment analysis, opinion mining, feature extraction

中图分类号:

TP391

周哲, 商琳. 一种基于动态词典和三支决策的情感分析方法[J]. 山东大学学报(工学版), 2015, 45(1): 19-23.

ZHOU Zhe, SHANG Lin. A sentiment analysis method based on dynamic lexicon and three-way decision[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2015, 45(1): 19-23.

参考文献

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一种基于动态词典和三支决策的情感分析方法

A sentiment analysis method based on dynamic lexicon and three-way decision

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