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Prediction of Ship Traffic Flow Based on BP Neural Network and Markov Model

机译:基于BP神经网络和马尔可夫模型的船舶交通流量预测

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This paper discusses the distribution regularity of ship arrival and departure and the method of prediction of ship traffic flow. Depict the frequency histograms of ships arriving to port every day and fit the curve of the frequency histograms with a variety of distribution density function by using the mathematical statistic methods based on the samples of ship-to-port statistics of Fangcheng port nearly a year. By the chi-square testing: the fitting with Negative Binomial distribution and t-Location Scale distribution are superior to normal distribution and Logistic distribution in the branch channel; the fitting with Logistic distribution is superior to normal distribution, Negative Binomial distribution and t-Location Scale distribution in main channel. Build the BP neural network and Markov model based on BP neural network model to forecast ship traffic flow of Fangcheng port. The new prediction model is superior to BP neural network model by comparing the relative residuals of predictive value, which means the new model can improve the prediction accuracy.
机译:本文讨论了船舶到达和出发的分布规律以及船舶交通流量预测方法。描绘了每天到达端口的船舶的频率直方图,并使用基于Fangcheng Port的船舶统计样本的数学统计方法使用各种分布密度函数的频率直方图的曲线。通过Chi-Square测试:具有负二项式分布和T型测距分布的配合优于分支通道的正态分布和物流分布;逻辑分布的配件优于正常分布,负二项式分布和主通道中的T型尺度分布。基于BP神经网络模型构建BP神经网络和马尔可夫模型,以预测Fangcheng Port的船舶交通流量。通过比较预测值的相对残差,新的预测模型优于BP神经网络模型,这意味着新模型可以提高预测精度。

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