Functional Link Artificial Neural Network with Cloud Estimation of Distribution Algorithm for Traffic Flow Forecast
Ying Gao, Waixi Liu · 2017
The traditional artificial neural network traffic flow forecast model based on gradient descent algorithm has the problems of slow convergence and local optimum. In order to improve the forecast accuracy of traffic flow, a forecast model based on functional link artificial neural network(FLANN) and cloud estimation of distribution algorithm(CEDA) is proposed. In the model, CEDA inspired from cloud model is used to optimize the initial connection weights of FLANN. It firstly extracts the global statistical information about the search space and builds a cloud model of promising solutions by the backward cloud generator. Then, new solutions are generated from the cloud model by the forward cloud generator, and the best solutions are selected from current solutions and new solutions to form next population. The algorithm is applied to the empirical traffic flow forecast. The experimental results show that the model is effectiveness and feasibility, and has a higher forecast accuracy compared with the traditional ANN forecast model with gradient descent algorithm.