Abstract:
Fisher’s discriminant analysis; also called linear discriminant analysis (LDA), is a popu- lar dimensionality reduction technique that is widely used for features extraction. LDA aims at finding an optimal linear transformation based on maximizing a class separabil- ity. Even though LDA shows useful results in various pattern recognition problems, such as face recognition, less attention has been devoted to employing this technique in Arabic information retrieval tasks. In particular, the sizable feature vectors in textual data en- forces to implement dimensionality reduction techniques such as LDA. In this paper, we empirically investigated an LDA based method for Arabic text classification. We used a cor- pus that contains 2,0 0 0 documents belonging to five categories. The experimental results showed that the performance of semantic loss LDA based method was almost the same as the semantic rich singular value decomposition (SVD), and that is indication that LDA is a promising method for text mining applications
