本文選題：微博 + 情感詞�。� 參考：《首都師范大學(xué)》2014年碩士論文

【摘要】：隨著新型互聯(lián)網(wǎng)應(yīng)用的迅猛發(fā)展,微博快速崛起,用戶數(shù)達到2.81億,使用率達到45.5%,每天數(shù)以千萬人通過微博分享自己對各類話題的觀點與情感,如何自動感知微博主體的情感,并從宏觀上科學(xué)研判微博社區(qū)對特定話題的觀點傾向性,已經(jīng)成為微博計算與輿情分析亟待解決的基本科學(xué)問題。 然而,以往的情感分析大都是基于整個傳統(tǒng)長文本層面,并且由于微博內(nèi)容短小且不規(guī)范,碎片化與主體化特征日益凸顯,傳統(tǒng)的情感分析算法存在本質(zhì)缺陷,效率低下且效果很難滿足實際需求。利用情感詞典分析用戶產(chǎn)生內(nèi)容的情感傾向性是簡單有效的方法。但由于情感詞典規(guī)模有限,同時網(wǎng)絡(luò)用語新詞層出不窮,語言使用不規(guī)范,人工整理耗時耗力,領(lǐng)域性強。為解決以上問題,本文提出一種自動挖掘潛在情感詞并計算其情感權(quán)重的算法,該算法與應(yīng)用領(lǐng)域無關(guān),具有良好的擴展性。該方法基于貝葉斯原理和大數(shù)據(jù)挖掘,能夠挖掘未知的情感詞,并根據(jù)其情感權(quán)重值的大小判斷其情感極性及情感傾向性程度,可有效擴展情感詞典,并豐富情感詞典的精細(xì)化使用,從而實現(xiàn)了情感詞庫的自動挖掘與獲取。同時,在此基礎(chǔ)之上,實現(xiàn)情感主體屬性的識別,包括觀點句識別、情感對象抽取及情感傾向性判斷,從而完成情感分析的本體自動抽取。 本文在理論研究的基礎(chǔ)上進行算法的實踐驗證,同時為驗證該方法能夠?qū)崿F(xiàn)跨領(lǐng)域,本文又分別針對京東商城、豆瓣、大眾點評三組評論語料做了實驗。其結(jié)果的準(zhǔn)確率都基本在90%以上,驗證了以上算法的有效性和實用性,為各種互聯(lián)網(wǎng)應(yīng)用,不僅僅是微博,提供了情感分析的基礎(chǔ)。
[Abstract]:With the rapid development of new Internet applications, Weibo has risen rapidly, with the number of users reaching 281 million and the utilization rate reaching 45.5. Tens of millions of people share their views and feelings on various topics through Weibo every day, and how to automatically perceive the emotions of Weibo subjects. It has become a basic scientific problem to be solved urgently to calculate and analyze public opinion from macroscopic view of Weibo community on specific topic. However, most of the previous emotional analysis is based on the whole traditional long text level, and because Weibo's content is short and non-standard, fragmentation and subjectivity feature is increasingly prominent, the traditional emotional analysis algorithm has essential defects. The efficiency is low and the effect is very difficult to meet the actual demand. It is a simple and effective method to use emotion dictionary to analyze the affective tendency of user generated content. However, due to the limited scale of emotion dictionary, the network neologisms emerge in endlessly, language use is not standardized, manual collation is time-consuming and consuming, and domain is strong. In order to solve the above problems, this paper proposes an algorithm for automatically mining latent emotion words and calculating their emotional weights. The algorithm is independent of the application field and has good expansibility. Based on Bayesian theory and big data mining, this method can mine unknown affective words, judge its emotional polarity and affective tendency according to the magnitude of its emotional weight, and can effectively expand the emotional dictionary. It also enriches the refined use of emotion dictionary, thus realizing the automatic mining and acquisition of emotion lexicon. At the same time, on the basis of this, the recognition of emotional subject attributes is realized, including viewpoint sentence recognition, emotional object extraction and emotional orientation judgment, so that the ontology of emotional analysis can be extracted automatically. In this paper, based on the theoretical research, the algorithm is verified in practice, and in order to verify that the method can achieve cross-domain, this paper respectively aimed at JingDong Mall, Douban, Dianping three groups of comment corpus to do experiments. The accuracy of the results is above 90%, which verifies the validity and practicability of the above algorithms, and provides a basis for emotional analysis for various Internet applications, not only Weibo.
【學(xué)位授予單位】：首都師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TP393.092;TP391.1

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