关键词: RBF神经网络, 聚类算法, 预测, 人民币汇率

Abstract: In view of considerable data prediction errors of approximate linear time series data in partition algorithm of RBF neural network，a new improved algorithm is presented on the basis of original RBF neural network.This improved algorithm takes central value by each section as a basis，optimizes the determination of values of central point of original algorithm of radial base function and improves accuracy of data prediction of approximate linear time series data.Prediction experiment of exchange rate of American Dollar for RMB in recent two years has proved that the prediction accuracy of this improved algorithm is comparatively higher than that of original algorithm.

Key words: RBF neural network, clustering algorithm, prediction, RMB exchange rate