Módszerek összehasonlítása

	Autoformer: Decompozíciós transzformer hosszú távú idősor-előrejelzéshez	Állapotterek (State Space) modell (Kalman-szűrő)
Tudományterület	Mélytanulás	Ökonometria
Módszercsalád	Machine learning	Regression model
Keletkezés éve	2021	1990
Megalkotó	Haixu Wu et al. (Tsinghua)	Harvey; Durbin & Koopman (state space treatment); Kalman filter
Típus	Decomposition-based deep forecasting model	State space time series model
Alapmű	Wu, H., Xu, J., Wang, J., & Long, M. (2021). Autoformer: Decomposition transformers with auto-correlation for long-term series forecasting. NeurIPS, 34.	Harvey, A. C. (1990). Forecasting, Structural Time Series Models and the Kalman Filter. Cambridge University Press.
Alternatív nevek	Auto-Correlation Transformer, Decomposition Transformer, Series Decomposition Forecaster, Oto-Korelasyon Ayrışım Transformer	state space, Kalman filter, unobserved components model, Durum Uzayı Modeli (State Space / Kalman Filter)
Kapcsolódó	4	4
Összefoglaló	Autoformer is a deep learning architecture for long-term time-series forecasting, introduced by Wu et al. from Tsinghua University at NeurIPS 2021. It replaces the standard self-attention mechanism with an Auto-Correlation mechanism that exploits periodic dependencies in the frequency domain, and embeds a progressive series decomposition block throughout the encoder and decoder to separately model trend and seasonal components.	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.