Journal of Software Engineering1819-43112152-0941Asian Network for Scientific Information10.3923/jse.2016.109.118ZhaoMing ChenJingchao 12016101In order to choose a better model for pattern recognition and machine learning, four nearest neighbor classification algorithms are discussed under different weighted functions, k value and sample sizes, based on Euclidean distance metric. Three factors mainly affect these classifiers performance, including the number of nearest neighbors, distance metric and decision rule. The experimental results demonstrated that a better classifier can be easily chosen for a given dataset through comparison the accuracy rate and the cost time through comparing different situations of four classification algorithms. Furthermore, several previous related works about improving classifiers performance have also been summarized which can provide a basic overview for both specialists and non-specialists, as well as how to select an algorithm and parameters as appropriate as possible.]]>Rogers, S. and M. Girolami,2011Pages: 305Pages: 305Cover, T. and P. Hart,1967132127Bi, X. and R. Bi,2009143131Khuman, M.B.,20122817821Kulkarni, S.R., G. Lugosi and S.S. Venkatesh,1998621782206Shi, K.S., L. Li, H.T. Liu, J. He, N. Zhang and W. Song,20112011pp: 113117Bentley, J.L.,197518509517Kim, Y.I., Y.B. Park and J.H. Chun,19961996pp: 270275Guttman, A.,19841984pp: 4757Kim, B.S. and S.B. Park,19868761766Knorr, E.M. and R.T. Ng,19991999pp: 211222Ramaswamy, S., R. Rastogi and K. Shim,20002000pp: 427438Bay, S.D. and M. Schwabacher,20032003pp: 2938Ghoting, A., S. Parthasarathy and M.E. Otey,200816349364Wang, C.X., Z.M. Pan, C.S. Ma, L.L. Dong and T. Zhang,201238160168Oliveira, E., P.M. Ciarelli, C. Badue and A.F. de Souza,20082008pp: 628633Zanchettin, C., B.L.D. Bezerra and W.W. Azevedo,20122012pp: 18Bellili, A., M. Gilloux and P. Gallinari,20012001pp: 2832 Musdholifah, A., S.Z.B.M. Hashim, I. Wasito,20102010pp: 16Silva, L.A. and E. Del-Moral-Hernandez,20112011pp: 23682373Stone, C.J.,19775595645Devroye, L., L. Gyorfi, A. Krzyzak and G. Lugosi,19942213711385Devroye, L., L. Gyorfi and G. Lugosi,1996Pages: 636Pages: 636Fukunaga, K. and T.E. Flick,19846314318Snapp, R.R. and S.S. Venkatesh,199826850878Bailey, T. and A.K. Jain,19788311313