방법 비교

	DeepAR	Informer	랜덤 포레스트
분야	딥러닝	딥러닝	머신러닝
계열	Machine learning	Machine learning	Machine learning
기원 연도	2020	2021	2001
창시자	Salinas, D., Flunkert, V. & Gasthaus, J. (Amazon)	Zhou, H. et al.	Breiman, L.
유형	Autoregressive recurrent neural network (probabilistic forecasting)	Transformer (ProbSparse self-attention)	Ensemble (bagging of decision trees)
원전	Salinas, D., Flunkert, V., Gasthaus, J. & Januschowski, T. (2020). DeepAR: Probabilistic Forecasting with Autoregressive Recurrent Networks. International Journal of Forecasting, 36(3), 1181–1191.	Zhou, H. et al. (2021). Informer: Beyond Efficient Transformer for Long Sequence Time-Series Forecasting. AAAI.	Breiman, L. (2001). Random Forests. Machine Learning, 45, 5–32.
별칭	DeepAR — Olasılıksal RNN Tahmini, probabilistic autoregressive RNN forecasting, Amazon DeepAR	Informer — Uzun Dizi Transformer Tahmini, Informer transformer, ProbSparse attention forecaster	Rastgele Orman (Random Forest), rastgele orman, random decision forest, bagged tree ensemble
관련	5	5	4
요약	DeepAR is Amazon's industrial forecasting model, introduced by Salinas, Flunkert and Gasthaus (2017; published 2020), that uses an autoregressive recurrent neural network to estimate the parameters of a probability distribution at each step, producing a confidence interval rather than a single point forecast. It can model many related time series jointly within one model.	Informer is a Transformer-based model introduced by Zhou et al. in 2021 for long-sequence time-series forecasting, using a ProbSparse self-attention mechanism that lowers the computational complexity of the standard Transformer to O(L log L). It is built for problems that demand predictions across thousands of future steps.	Random Forest is an ensemble learning method, introduced by Leo Breiman in 2001, that grows many decision trees on bootstrap samples of the data and combines their votes to produce strong classification and regression. By pooling many slightly different trees, it produces more accurate and more stable predictions than any single tree.