應用類神經網路方法於新聞文件之意見持有者自動擷取

Automatic Extraction of Opinion Holders in News with Neural Network Methods

楊長嘉(Yang Chang-Jia)

指導教授 ： 侯文娟

國立臺灣師範大學/理學院/資訊工程學系/碩士(2019年)

https://doi.org/10.6345/NTNU201900475

摘要

網際網路的迅速發展帶給人們方便。但每天都有大量的文本資訊需要閱讀，此時可使用意見探勘，從大量文本中擷取人們感興趣之部分和重要的意見觀點，幫助我們快速地掌握並理解文章中持有者所要陳述的意見觀點及其主張。一般意見句可分為四個部分，包括意見主題、意見持有者、意見主張及意見情感，本研究目標是在於辨識意見持有者，本研究提出類神經網路方法，首先找出文章的意見句，再辨識意見句中的文章作者意見以及意見持有者。
利用自然語言處理之方法辨識文章作者以及意見持有者，其中前處理方法包括斷詞(Tokenize)、蒐集意見詞、還原字根(Stemming)、尋找意見句、詞性標記(POS)、具名實體辨識(NER)和文章作者以及意見持有者之特徵值擷取，本論文利用詞彙相關資訊、詞性相關資訊、標點符號相關資訊、具名實體相關資訊、句法相關資訊、意見詞資訊以及文句組成相關資訊等特徵辨識文章中意見句之文章作者意見以及意見持有者。
實驗成果顯示在英語新聞文章中，文章作者意見辨識可以達到F-1值99.44%的效能；意見持有者辨識可以達到F-1值81.71%的效能。

關鍵字

意見探勘 ； 意見句擷取 ； 意見持有者辨識 ； 機器學習 ； 類神經網路

並列摘要

The rapid development of the Internet has brought convenience to people. However, there is a lot of text information that we need to read every day . At this time, we can use opinion exploration techniques to extract people's interests and important opinions from a large number of texts, helping us quickly grasp and understand the opinion viewpoints and claims of holders of the articles. In general, an opinion sentence can be divided into four parts, including opinion topic, opinion holder, opinion claim and opinion sentiment. The purpose of this study is to identify the opinion holder. This study proposes a neural network method. First we find the opinion sentences of the article, and then identify the author of the article in the opinion sentences and the holder of the opinion.

The method of natural language processing is used to identify the author of the article as well as the opinion holder, in which the method includes tokenization, collecting opinion words, stemming, finding opinions, part-of-speech tagging, recognizing the named entity and the author of the article and the feature extraction. In the feature extraction section, this thesis uses the features of lexical related information, part of speech related information, punctuation related information, named entity related information, syntactic related information, opinion word information and sentence information to identify the article's opinion sentences, author's opinions and opinions holder.
The experimental results show that, the article author's opinion recognition can achieve 99.44% of the F-1 value and the opinion holder extraction can get 81.71% of the F-1 value.

並列關鍵字

opinion exploration ； opinion extraction ； opinion holder identification ； machine learning ； neural network

參考文獻

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