পদ্ধতির তুলনা করুন

	Koopa: Koopman Predictors for Non-stationary Time Series	সময় সিরিজ পূর্বাভাসের জন্য DLinear: ডিকম্পোজিশন লিনিয়ার মডেল	স্টেট স্পেস মডেল (কালম্যান ফিল্টার)
ক্ষেত্র	গভীর শিখন	গভীর শিখন	অর্থমিতি
পরিবার	Machine learning	Machine learning	Regression model
উদ্ভবের বছর	2023	2023	1990
প্রবর্তক	Yong Liu et al.	Ailing Zeng et al.	Harvey; Durbin & Koopman (state space treatment); Kalman filter
ধরন	Koopman operator-based time-series forecasting model	Decomposition-based linear forecasting model	State space time series model
মৌলিক উৎস	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.
অপর নাম	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)
সম্পর্কিত	3	3	4
সারসংক্ষেপ	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.