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Using CoTraining and Semantic Feature Extraction for Positive and Unlabeled Text Classification

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3 Author(s)
Na Luo ; Coll. of Comput. & Sci. & Technol., JiLin Univ., Changchun ; Fuyu Yuan ; Wanli Zuo

This paper originally proposes a three-setp algorithm. First, CoTraining is employed for filtering out the likely positive data from the unlabeled dataset U. Second, we got vectors of documents in positive set using semantic-based feature extraction, then found the strong positive from likely positive set which is produced in first step. Those data picked out can be supplied to positive dataset P. Finally, a linear one-class SVM will learn from both the purified U as negative and the expanded P as positive. Because of the algorithm's characteristic of automatic expanding positive dataset, the proposed algorithm especially performs well in situations where given positive dataset P is insufficient. A comprehensive experiment had proved that our algorithm is preferable to the existing ones.

Published in:

Future Information Technology and Management Engineering, 2008. FITME '08. International Seminar on

Date of Conference:

20-20 Nov. 2008