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- W1552946913 abstract "In this paper, we classified the objectionable texts into four rates according to their harm- fulness and proposed the hierarchical text rating system for objectionable documents. Since the documents in the same category have similarities in used words, expressions and structure of the document, the text rating system, which uses a single classification model, has low accuracy. To solve this problem, we separate objectionable documents into several subsets by using their properties, and then classify the subsets hierarchically. The proposed system consists of three layers. In each layer, we select features using the chi-square statistics, and then the weight of the features, which is calculated by using the TF-IDF weighting scheme, is used as an input of the non-linear SVM classifier. By means of a hierarchical scheme using the different features and the different number of features in each layer, we can characterize the objectionability of documents more effectively and expect to improve the performance of the rating system. We compared the performance of the proposed system and performance of several text rating systems and experimental results show that the proposed system can archive an excellent classification performance." @default.
- W1552946913 created "2016-06-24" @default.
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- W1552946913 date "2005-12-01" @default.
- W1552946913 modified "2023-10-16" @default.
- W1552946913 title "A Hierarchical Text Rating System for Objectionable Documents" @default.
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- W1552946913 doi "https://doi.org/10.3745/jips.2005.1.1.022" @default.
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