An Effective Class-Centroid-Based Dimension Reduction Method for Text Classification

Provided by: Association for Computing Machinery
Topic: Data Management
Format: PDF
Motivated by the effectiveness of centroid-based text classification techniques, the authors propose a classification-oriented class-centroid-based Dimension Reduction (DR) method, called CentroidDR. Basically, CentroidDR projects high-dimensional documents into a low-dimensional space spanned by class centroids. On this class-centroid-based space, the centroid-based classifier essentially becomes CentroidDR plus a simple linear classifier. Other classification techniques, such as K-Nearest Neighbor (KNN) classifiers, can be used to replace the simple linear classifier to form much more effective text classification algorithms.

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