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- W3149310329 abstract "In text classification tasks, the high dimensionality of data would result in a high computational complexity and decrease the classification accuracy because of high correlation between features; so, it is necessary to execute feature selection. In this paper, we propose a Discriminant Mutual Information (DMI) criterion to select features for text classification tasks. DMI measures the discriminant ability of features from two aspects. One is the mutual information between features and the label information. The other is the discriminant correlation degree between a feature and a target feature subset based on the label information, which could be used for judging whether a feature is redundant in the target feature subset. Thus, DMI is a de-redundancy text feature selection method considering discriminant information. In order to prove the superiority of DMI, we compare it with the state-of-the-art filter methods for text feature selection and conduct experiments on two datasets: Reuters-21578 and WebKB. K-Nearest Neighbor (KNN) and Support Vector Machine (SVM) are taken as the subsequent classifiers. Experimental results shows that the proposed DMI has significantly improved the classification accuracy and F1-score of both Reuters-21578 and WebKB." @default.
- W3149310329 created "2021-04-13" @default.
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- W3149310329 date "2021-01-01" @default.
- W3149310329 modified "2023-09-24" @default.
- W3149310329 title "Discriminant Mutual Information for Text Feature Selection" @default.
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- W3149310329 doi "https://doi.org/10.1007/978-3-030-73197-7_9" @default.
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