手法を比較

	LSTM	リカレントニューラルネットワーク (RNN)	標本エントロピー
分野	深層学習	深層学習	複雑系
系統	Machine learning	Machine learning	Machine learning
提唱年	1997	1986–1990	2000
提唱者	Hochreiter, S. & Schmidhuber, J.	Rumelhart, D. E.; Elman, J. L.	Richman & Moorman
種類	Recurrent neural network (gated memory cell)	Sequential neural network	Nonlinear entropy measure
原典	Hochreiter, S. & Schmidhuber, J. (1997). Long Short-Term Memory. Neural Computation, 9(8), 1735–1780.	Elman, J. L. (1990). Finding structure in time. Cognitive Science, 14(2), 179–211.	Richman, J. S., & Moorman, J. R. (2000). Physiological time-series analysis using approximate entropy and sample entropy. American Journal of Physiology, 278(6), H2039–H2049.
別名	LSTM (Uzun Kısa Dönem Bellek Ağı), long short-term memory, LSTM network, recurrent neural network with memory cells	RNN, Elman network, Jordan network, simple recurrent network	SampEn, Sample Entropy (SampEn), Örneklem Entropisi, Nonlinear Complexity Measure
関連	5	3	2
概要	LSTM (Long Short-Term Memory) is a recurrent neural network architecture, introduced by Sepp Hochreiter and Jürgen Schmidhuber in 1997, that can learn long-term dependencies in sequential data and is widely used for time-series and sequence prediction. It keeps an internal memory that lets information persist across many time steps.	A Recurrent Neural Network (RNN) is a class of neural network designed to process sequential data by maintaining a hidden state that carries information across time steps. Introduced in its modern form by Rumelhart et al. (1986) and further shaped by Elman (1990), RNNs became the dominant architecture for sequence modelling in NLP, speech, and time-series analysis before the rise of attention-based models.	Sample Entropy (SampEn) is a nonlinear measure of the complexity and regularity of a time series. Introduced by Richman and Moorman in 2000 as an improvement over Approximate Entropy (ApEn), it quantifies the likelihood that similar patterns of a given length in the series remain similar when extended by one additional data point. A higher SampEn value indicates greater irregularity and complexity, while a lower value indicates more regularity or self-similarity.