So sánh phương pháp

	Koopa: Bộ Tiên Tri Koopman cho Chuỗi Thời Gian Phi Trạng Thái	DLinear: Mô hình Tuyến tính Phân rã cho Dự báo Chuỗi Thời gian	Mô hình không gian trạng thái (Bộ lọc Kalman)
Lĩnh vực	Học sâu	Học sâu	Kinh tế lượng
Họ	Machine learning	Machine learning	Regression model
Năm ra đời	2023	2023	1990
Người khởi xướng	Yong Liu et al.	Ailing Zeng et al.	Harvey; Durbin & Koopman (state space treatment); Kalman filter
Loại	Koopman operator-based time-series forecasting model	Decomposition-based linear forecasting model	State space time series model
Công trình gốc	Liu, Y., Li, C., Wang, J., & Long, M. (2023). Koopa: Learning non-stationary time series dynamics with Koopman predictors. NeurIPS.	Zeng, A., Chen, M., Zhang, L., & Xu, Q. (2023). Are transformers effective for time series forecasting? AAAI.	Harvey, A. C. (1990). Forecasting, Structural Time Series Models and the Kalman Filter. Cambridge University Press.
Tên gọi khác	Koopman Predictor, Koopman-based Time-Series Model, Koopa Forecaster, Koopman Tahmincisi	Decomposition Linear, DLinear Forecaster, Linear Decomposition Model, Ayrışım Doğrusal Modeli	state space, Kalman filter, unobserved components model, Durum Uzayı Modeli (State Space / Kalman Filter)
Liên quan	3	3	4
Tóm tắt	Koopa is a deep learning model for time-series forecasting introduced by Yong Liu, Chang Li, Jianmin Wang, and Mingsheng Long at NeurIPS 2023. It addresses the challenge of non-stationarity by disentangling time series into stationary and non-stationary components, then modeling the non-stationary dynamics using a learned approximation of the Koopman operator — a mathematical framework that lifts nonlinear systems into a linear space for tractable long-horizon prediction.	DLinear is a lightweight time series forecasting model introduced by Zeng et al. at AAAI 2023. It challenges the prevailing assumption that Transformer-based architectures are necessary for accurate long-horizon forecasting. The model decomposes an input sequence into trend and seasonal components using a moving average filter, then applies separate single-layer linear transformations to each component before summing their outputs to produce the final forecast.	A state space model is a general time series framework that describes a series through unobserved (latent) state variables linked by a measurement equation and a transition equation, with the states estimated in real time by the Kalman filter. Developed in the state space tradition of Harvey (1990) and Durbin & Koopman (2012), it nests ARIMA and exponential smoothing as special cases.