1.Advanced Control Systems Laboratory, School of Electronics and Information Engineering, Beijing Jiaotong University, Beijing 100044 2.Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700
Abstract As a special classification problem, classification of Boolean sequences is seldom studied. Definitions of the ordering and piecewise mapping are given. And then a dimension-reduction method called ordering and piecewise mapping (OPM ) is put forward. Thus an improved KNN algorithm (OPM-KNN) is presented by integrating OPM with KNN. Analytical and experimental results show the speed of OPM method is improved compared with that of traditional PCA algorithm in dimension reduction. As for classification, the accurate rate of OPM-KNN is almost equivalent to the traditional KNN algorithm or appreciably higher than it and the speed is also faster.
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