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Researeh on Opinion Extraetion of Chinese Produet Review

Author: LiChunLiang
Tutor: ZhuYanHui
School: Hunan University
Course: Applied Computer Technology
Keywords: Product Review Opinion mining Emotional words Attribute characteristics Polarity
CLC: TP391.1
Type: Master's thesis
Year: 2011
Downloads: 20
Quote: 0
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Abstract


With the development of e-commerce and web 2.0 applications , more and more consumers after the purchase and use of products , like products viewpoints attitude in the e-commerce website , forum , blog , these comments contain user characteristics , views of features, performance , consumer before purchase always consulting others views on the product in order to make informed purchase decisions , manufacturers can also be based on user reviews to improve the product manual to browse these massive product reviews time-consuming and inefficient , and there are lag and one-sidedness . Recently, unstructured network product reviews automatically opinion mining has become a hot research topic . In this paper, the emotional perspective extract resources , product attributes feature extraction , the attribute feature words with emotional word identification and polarity determination to carry out the in-depth study and research work of this paper are as follows : (1) the use of open source the the tools Larbin and Xpath mobile channel for shopping site directed reptiles , and page format using Xpath metadata extraction , and ultimately build a cell phone reviews corpus . ( 2) in building emotional point of view to extracting resources , the proposed construction method based on the Baidu encyclopedia emotional Dictionary conjunctions dictionary - based and dependency syntactic relations combined field of emotion dictionary method network emotional Dictionary , the emotions modified dictionary construction method . ( 3 ) characteristics of the product attributes extracted aspects , the proposed rule-based and statistical recognition algorithm and recognition algorithm to extract the product attribute characteristics CRF - based attribute characteristics to improve the the former accurately rate of 0.56 , the coverage rate of 0.73 , while the latter is the accurate a higher rate, was 0.78 , but the coverage is only 0.46, in order to be compared with other researchers , Hu and Liu's method is applied to the experimental environment , experiments show that the two methods of this article in the method of Hu and Liu . (4) with the identification and polarity attribute characteristics and emotional words judging the accuracy with SVM recognition algorithm , and matching algorithm with the nearest neighbor recognition algorithm based on dependency syntax with comparative experiments , SVM with the recognition algorithm reached 0.83 , the coverage rate of 0.62 F 0.71 , much higher than the other two methods , to obtain the best performance .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Text Processing
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