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|Title:||A comparative study on term weighting schemes for text categorization||Authors:||Lan, M.
|Issue Date:||2005||Citation:||Lan, M.,Sung, S.-Y.,Low, H.-B.,Tan, C.-L. (2005). A comparative study on term weighting schemes for text categorization. Proceedings of the International Joint Conference on Neural Networks 1 : 546-551. ScholarBank@NUS Repository. https://doi.org/10.1109/IJCNN.2005.1555890||Abstract:||The term weighting scheme, which is used to convert documents into vectors in the term spaces, is a vital step in automatic text categorization. The previous studies showed that term weighting schemes dominate the performance rather than the kernel functions of S Ms for the text categorization task. In this paper, we conducted experiments to compare various term weighting schemes with S M on two widely-used benchmark data sets. We also presented a new term weighting scheme t f . r f for text categorization. The cross-scheme comparison was performed by using McNcmar's Tests. The controlled experimental results showed that the newly proposed t f . r f scheme is significantly better than other term weighting schemes. Compared with schemes related with t f factor alone, the idf factor does not improve or even decrease the term's discriminating power for text categorization. The binary and t f .chi representations significantly underperform the other term weighting schemes. © 2005 IEEE.||Source Title:||Proceedings of the International Joint Conference on Neural Networks||URI:||http://scholarbank.nus.edu.sg/handle/10635/40449||ISBN:||0780390482||DOI:||10.1109/IJCNN.2005.1555890|
|Appears in Collections:||Staff Publications|
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