Sliding-Window Signatures for Time Series: Application to Electricity Demand Forecasting
时间序列的滑动窗口签名特征:电力需求预测应用AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确围绕时间序列特征构造与电力需求预测,直接对应时间序列和预测方向。
时间序列的滑动窗口签名特征:电力需求预测应用AI 解读 ↓
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Nonlinear and delayed effects of covariates often render time series forecasting challenging. To this end, we propose a novel forecasting framework based on ridge regression with signature features calculated on sliding windows. These features capture complex temporal dynamics without relying on learned or hand-crafted representations. Focusing on the discrete-time setting, we establish theoretical guarantees, namely universality of approximation and stationarity of signatures. We introduce an efficient sequential algorithm for computing signatures on sliding windows. The method is evaluated on both synthetic and real electricity demand data. Results show that signature features effectively encode temporal and nonlinear dependencies, yielding accurate forecasts competitive with those based on expert knowledge.