1. A Variational Bayesian Deep Network with Data Self-Screening Layer for Massive Time-Series Data Forecasting.
- Author
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Jin, Xue-Bo, Gong, Wen-Tao, Kong, Jian-Lei, Bai, Yu-Ting, and Su, Ting-Li
- Subjects
BAYESIAN analysis ,COMPUTER input design ,FORECASTING ,BIG data ,AIR quality - Abstract
Compared with mechanism-based modeling methods, data-driven modeling based on big data has become a popular research field in recent years because of its applicability. However, it is not always better to have more data when building a forecasting model in practical areas. Due to the noise and conflict, redundancy, and inconsistency of big time-series data, the forecasting accuracy may reduce on the contrary. This paper proposes a deep network by selecting and understanding data to improve performance. Firstly, a data self-screening layer (DSSL) with a maximal information distance coefficient (MIDC) is designed to filter input data with high correlation and low redundancy; then, a variational Bayesian gated recurrent unit (VBGRU) is used to improve the anti-noise ability and robustness of the model. Beijing's air quality and meteorological data are conducted in a verification experiment of 24 h PM2.5 concentration forecasting, proving that the proposed model is superior to other models in accuracy. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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