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SCINet: Time Series Modeling and Forecasting with Sample Convolution and Interaction

2021-06-17Code Available1· sign in to hype

Minhao Liu, Ailing Zeng, Muxi Chen, Zhijian Xu, Qiuxia Lai, Lingna Ma, Qiang Xu

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Abstract

One unique property of time series is that the temporal relations are largely preserved after downsampling into two sub-sequences. By taking advantage of this property, we propose a novel neural network architecture that conducts sample convolution and interaction for temporal modeling and forecasting, named SCINet. Specifically, SCINet is a recursive downsample-convolve-interact architecture. In each layer, we use multiple convolutional filters to extract distinct yet valuable temporal features from the downsampled sub-sequences or features. By combining these rich features aggregated from multiple resolutions, SCINet effectively models time series with complex temporal dynamics. Experimental results show that SCINet achieves significant forecasting accuracy improvements over both existing convolutional models and Transformer-based solutions across various real-world time series forecasting datasets. Our codes and data are available at https://github.com/cure-lab/SCINet.

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Benchmark Results

DatasetModelMetricClaimedVerifiedStatus
ETTh1 (168) MultivariateSCINetMSE0.41Unverified
ETTh1 (168) UnivariateSCINetMSE0.07Unverified
ETTh1 (24) MultivariateSCINetMSE0.3Unverified
ETTh1 (24) UnivariateSCINetMSE0.03Unverified
ETTh1 (336) MultivariateSCINetMSE0.5Unverified
ETTh1 (336) UnivariateSCINetMSE0.08Unverified
ETTh1 (48) MultivariateSCINetMSE0.36Unverified
ETTh1 (48) UnivariateSCINetMSE0.04Unverified
ETTh1 (720) MultivariateSCINetMSE0.54Unverified
ETTh1 (720) UnivariateSCINetMSE0.1Unverified
ETTh2 (168) MultivariateSCINetMSE0.34Unverified
ETTh2 (168) UnivariateSCINetMSE0.16Unverified
ETTh2 (24) MultivariateSCINetMSE0.18Unverified
ETTh2 (24) UnivariateSCINetMSE0.07Unverified
ETTh2 (336) MultivariateSCINetMSE0.37Unverified
ETTh2 (336) UnivariateSCINetMSE0.17Unverified
ETTh2 (48) MultivariateSCINetMSE0.23Unverified
ETTh2 (48) UnivariateSCINetMSE0.09Unverified
ETTh2 (720) MultivariateSCINetMSE0.48Unverified
ETTh2 (720) UnivariateSCINetMSE0.29Unverified

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