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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:本文讨论了船舶进出港的分布规律以及船舶流量预测的方法。以防城港近一年来的船舶口岸统计样本为基础,运用数学统计方法,描述每天到达港口的船舶的频率直方图,并用各种分布密度函数拟合频率直方图的曲线。通过卡方检验:负二项分布和t位置量表分布的拟合优于分支通道中的正态分布和Logistic分布; Logistic分布的拟合优于主通道的正态分布,负二项分布和t位置尺度分布。建立基于BP神经网络模型的BP神经网络和马尔可夫模型,对防城港船舶流量进行预测。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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