Text document preprocessing using the Bayes formula for classification based on the vector space modelTools Isa, Dino and Hong, Lee Lam and Kallimani, V.P. and Rajkumar, R. (2008) Text document preprocessing using the Bayes formula for classification based on the vector space model. Computer and Information Science, 1 (4). pp. 7990. ISSN 19138989
AbstractThis work utilizes the Bayes formula to vectorize a document according to a probability distribution based on keywords reflecting the probable categories that the document may belong to. The Bayes formula gives a range of probabilities to which the document can be assigned according to a pre determined set of topics (categories). Using this probability distribution as the vectors to represent the document, the text classification algorithms based on the vector space model, such as the Support Vector Machine (SVM) and SelfOrganizing Map (SOM) can then be used to classify the documents on a multidimensional level, thus improving on the results obtained using only the highest probability to classify the document, such as that achieved by implementing the naïve Bayes classifier by itself. The effects of an inadvertent dimensionality reduction can be overcome using these algorithms. We compare the performance of these classifiers for high dimensional data.
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