【摘要】 分析了ＢＰ模型学习算法——累积误差逆传播算法在接近极小点时收敛速度变得异常缓慢的原因，并通过对连接权值的调整量引入权重系数，提出了一种改进的ＢＰ模型学习算法，大大加快了收敛速度，提高了收敛性。还利用提出的改进算法对某省中期负荷进行了预测，算例结果表明了该算法的有效性。更多还原

【Abstract】 This paper analyses the cause of very slow learning rate during the time of ap-proaching the minim um poi nt in con vertional BP algorithm, by introducing weight factor into themodification of the connection weight,an improved leavning algorithm for BP model is presented,itcan sign ificantly in crease the learning rate and improve con vergent behaviour.As an illustrative ap-plication example,the n umeriCal resu It of the medium-term load forecasting is given.更多还原