Research on improved BP network
Bo Luo · Information technology newsletter · 2006
To overcome the shortcomings of the standard BP network,this paper proposes four improved(methods) based on adding up inertia item,which are adaptive study rate method,variant sigmoid function method and adaptive study rate with variant sigmoid function method.The methods are verified by a typically real (example) which is the problem of sunspots forecasting from two aspects that are convergence speed and the(precision.) It is proved that variant sigmoid function method is the best one.