Sparse Tucker Decomposition and Graph Regularization for High-Dimensional Time Series Forecasting
高维时间序列预测的稀疏 Tucker 分解与图正则化
Existing methods of vector autoregressive model for multivariate time series analysis make use of low-rank matrix approximation or Tucker decomposition to reduce the dimension of the over-parameterization issue. In this paper, we propose a sparse Tucker decomposition method with graph regularization for high-dimensional vector autoregressive time series. By stacking the time-series transition matrices into a third-order tensor, the sparse Tucker decomposition is employed to…