The Scientific World Journal

Research Article

Improved Feature-Selection Method Considering the Imbalance Problem in Text Categorization

Figure 3

The accuracy curves of NB based on nine pairs of feature-selection methods on Reuters-21578, respectively.
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(a) IG
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(b) CHI
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(c) MI
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(d) DF
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(e) GINI
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(f) DIA
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(g) CMFS
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(h) OCFS
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(i) DFPFS