In this paper, a novel fast learning algorithm for multilayered feedforward neural network is introduced. As compared to the conventional BP algorithm, the first improvement of this algorithm is the minimization of a combined error criterion based on the sum of nonlinear and linear quadratic errors of the output neurons, the other is the using of a modified error backpropagation factor in the learning process. The simulation results indicate that the learning speed of this algorithm exceeds that of the conv...