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A Comparison of Two Hybrid Approaches for Improving Neural Network “Simulation Study”

机译:改善神经网络“仿真研究”的两种混合方法的比较

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Traditional statistical models work on the assumption of linearity and stationary of time series. Machine learning models such as Artificial Neural Network (ANN) and Support Vector Regression (SVR) suffer the problem of over-fitting and are sensitive to parameter selection, respectively. This paper propose two models that integrates Statistical Empirical Mode Decomposition (SEMD) and ANN and Ensample Empirical Mode Decomposition and ANN for improve the weakness of ANN. SEMD and EEMD are an adaptive technique that shifts the non-stationary and non-linear time series data till it becomes stationary. In first stage, the data is decomposed into a smaller set of Intrinsic Mode Functions (IMFs) and residuals using EEMD and SEMD. In the next stage, IMFs and residue are taken as the inputs for the ANN model. The methodology was compared with EEMD-ANN and SEMD-ANN models. The results suggest that the SEMD-ANN is better than EEMD-ANN.
机译:传统的统计模型致力于假设线性度和时间序列的静止。人工神经网络(ANN)和支持向量回归(SVR)等机器学习模型遭受过拟合的问题,并且分别对参数选择敏感。本文提出了两种模型,可以集成统计实证模块分解(SEMD)和ANN,并ENSample实证模式分解和ANN,以提高ANN的弱点。 SEMD和EEMD是一种自适应技术,使非静止和非线性时间序列数据变为静止状态。在第一阶段,使用EEMD和SEMD将数据分解成较小的内在模式功能(IMF)和残差。在下一阶段,IMF和RESIDE将被视为ANN模型的输入。该方法与EEMD-ANN和SEMD-ANN模型进行了比较。结果表明,SEMD-ANN比EEMD-ANN更好。

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