Based on the study of radial basis function(RBF) neural network training algorithm,a new RBF neural network training algorithm was introduced by combining genetic algorithm of chromosomes with changeable length and least-square method.It is able to determine the structure and parameters of network.The new training algorithm was used to model heat loading forecasting for co-generation power plants,compares with BP neural network and RBF neural network based on a training algorithm of automatic increase in hi...