Information Technology Journal1812-56381812-5646Asian Network for Scientific Information10.3923/itj.2008.890.896HungY.H. LiaoY.S. 6200876In data mining, machine learning application is widely
discussed and studied. Purpose of using machine learning method to study
classification is to attempt to assist related personnel in decision-making.
Success of machine learning lies in its classification accuracy and stability,
thus improving classification accuracy and stability becomes hot topic
of researchers. Support Vector Machine is an excellent tool at high accuracy
rate of classification and prediction, but lacking the confidence at analyzing
highly complex data. This study utilized Principal Component Analysis
(PCA) and Fixed Size (FS) algorithm to reduce data freedom degree and
delete data noise and find critical support vector to improve Least Squares
Support Vector Machine (LS-SVM) classification accuracy. This study tested
four UCI libraries. From experimental result of highly complex PIDD library,
classification accuracy of two-stage PCA_FS_LS-SVM approach is 3.23% higher
than single LS-SVM. With the application of FS_LS-SVM algorithms, UCI
datasets classification systems can produce classification accuracies
above 96%.]]>Cao, L.J. and W.K. Chong, 20022002pp: 10011005Chang, C.C. and C.J. Lin, 20011321192147Draper, B., K. Baek, M. Bartlett and R. Beveridge, 200391115137Espinoza, M., J.A.K. Suykens and B. De Moor, 20063113129Fawcett, T.,200627861874Gestel, T.V., J.A.K. Suykens, B. Baesens, S. Viaene and J. Vanthienen et al., 200454532Girolami, M., 200214669688Hoegaerts, L., J.A.K. Suykens, J. Vandewalle and B. De Moor, 20042004pp: 561566Hsu, C.W. and C.J. Lin,200213415425Joachims, T., 19991999pp: 169-184pp: 169-184Karsmakers, P., K. Pelckmans and J.A.K. Suykens, 20072007pp: 17561761Karsmakers, P., K. Pelckmans, J.A.K. Suykens and H. Van Hamme, 20072007pp: 7881Katz, M., M. Schaffner, E. Andelic, S. Krüger and A. Wendemuth, 20052005pp: 523526Landgrebe, T.C.W., P. Paclik and R.P.W. Duin,20062006pp: 123127Lee, J., Y.M. Cheon, S.Y. Kim and E.J. Park, 20072007pp: 325332Mercer, J., 1909209415446Mumtaz, A., S.A.M. Gilani, K. Hameed and T. Jameel, 2008165768Provost, F. and T. Fawcett, 200142203231Ruping, S., 20012001pp: 641642Scholkopf, B., A.J. Smola and K.R. Muller, 19981012991319Suykens, J.A.K., T.V. Gestel, J.D. Brabanter, B. De Moor and J. Vandewalle, 20021st Edn.,Suykens, J.A.K. and J. Vandewalle,19999293300Tsumoto, S., 2000195662Vapnik, V., 19981st Edn.,Wang, H., D. Bell and F. Murtagh, 199921271277Williams, C. and M. Seeger, 20012001pp: 682–688pp: 682–688Zhao, K., Y.J. Tian and N.Y. Deng, 20072007pp: 331336