1.算法运行效果图预览
2.算法运行软件版本
matlab2022a
3.算法理论概述
CNN-GRU-Attention模型结合了卷积神经网络(CNN)、门控循环单元(GRU)和注意力机制(Attention)来进行时间序列数据的回归预测。CNN用于提取时间序列的局部特征,GRU用于捕获时间序列的长期依赖关系,而注意力机制则用于在预测时强调重要的时间步。
3.1 CNN(卷积神经网络)部分
在时间序列回归任务中,CNN用于捕获局部特征和模式:
3.2 GRU(门控循环单元)部分
GRU用于捕捉时间序列的长期依赖关系:
3.3 Attention机制部分
最后,通过反向传播算法调整所有参数以最小化预测误差,并在整个训练集上迭代优化模型。
4.部分核心程序
%CNN-GRU-ATT layers = func_model(Dim); %设置 %迭代次数 %学习率为0.001 options = trainingOptions('adam', ... 'MaxEpochs', 1500, ... 'InitialLearnRate', 1e-4, ... 'LearnRateSchedule', 'piecewise', ... 'LearnRateDropFactor', 0.1, ... 'LearnRateDropPeriod', 1000, ... 'Shuffle', 'every-epoch', ... 'Plots', 'training-progress', ... 'Verbose', false); %训练 Net = trainNetwork(Nsp_train2, NTsp_train, layers, options); figure subplot(211); plot(1: Num1, Tat_train,'-bs',... 'LineWidth',1,... 'MarkerSize',6,... 'MarkerEdgeColor','k',... 'MarkerFaceColor',[0.9,0.0,0.0]); hold on plot(1: Num1, T_sim1,'g',... 'LineWidth',2,... 'MarkerSize',6,... 'MarkerEdgeColor','k',... 'MarkerFaceColor',[0.9,0.9,0.0]); legend('真实值', '预测值') xlabel('预测样本') ylabel('预测结果') grid on subplot(212); plot(1: Num1, Tat_train-T_sim1','-bs',... 'LineWidth',1,... 'MarkerSize',6,... 'MarkerEdgeColor','k',... 'MarkerFaceColor',[0.9,0.0,0.0]); legend('真实值', '预测值') xlabel('预测样本') ylabel('预测误差') grid on ylim([-50,50]); figure subplot(211); plot(1: Num2, Tat_test,'-bs',... 'LineWidth',1,... 'MarkerSize',6,... 'MarkerEdgeColor','k',... 'MarkerFaceColor',[0.9,0.0,0.0]); hold on plot(1: Num2, T_sim2,'g',... 'LineWidth',2,... 'MarkerSize',6,... 'MarkerEdgeColor','k',... 'MarkerFaceColor',[0.9,0.9,0.0]); legend('真实值', '预测值') xlabel('测试样本') ylabel('测试结果') grid on subplot(212); plot(1: Num2, Tat_test-T_sim2','-bs',... 'LineWidth',1,... 'MarkerSize',6,... 'MarkerEdgeColor','k',... 'MarkerFaceColor',[0.9,0.0,0.0]); legend('真实值', '预测值') xlabel('预测样本') ylabel('预测误差') grid on ylim([-50,50]);
标签:0.9,...,GRU,0.0,Attention,matlab,CNN,LineWidth From: https://www.cnblogs.com/matlabworld/p/18049819