Multivariate Time Series Forecasting Based on Causal Inference with Transfer Entropy and Graph Neural Network

05/03/2020
by   Haoyan Xu, et al.
0

Multivariate time series (MTS) forecasting is an important problem in many fields. Accurate forecasting results can effectively help decision-making and reduce subjectivity. To date, many MTS forecasting methods have been proposed and widely applied. However, these methods assume that the value to be predicted of a single variable is related to all other variables, which makes it difficult to select the true key variable in high-dimensional situations. To address the above issue, a novel end-to-end deep learning model, termed transfer entropy graph neural network (TEGNN) is proposed in this paper. For accurate variable selection, the transfer entropy (TE) graph is introduced to characterize the causal information among variables, in which each variable is regarded as a graph node. In addition, convolutional neural network (CNN) filters with different perception scales are used for time series feature extraction. What is more, graph neural network (GNN) is adopted to tackle the embedding and forecasting problem of graph structure composed of MTS. MTS data collected from the real world are used to evaluate the prediction performance of TEGNN. Our comprehensive experiments demonstrate that the proposed TEGNN consistently outperforms state-of-the-art MTS forecasting baselines.

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