手法を比較

	アイソレーションフォレスト	t-SNE
分野	機械学習	機械学習
系統	Machine learning	Machine learning
提唱年	2008	2008
提唱者	Liu, F.T., Ting, K.M. & Zhou, Z.-H.	van der Maaten, L. & Hinton, G.
種類	Unsupervised ensemble (random partitioning trees)	Nonlinear dimensionality reduction (manifold visualization)
原典	Liu, F.T., Ting, K.M. & Zhou, Z.-H. (2008). Isolation Forest. IEEE ICDM, 413–422.	van der Maaten, L. & Hinton, G. (2008). Visualizing Data using t-SNE. Journal of Machine Learning Research, 9(86), 2579–2605.
別名	Isolation Forest (Aykırı Değer Tespiti), iForest, isolation forest anomaly detection	t-SNE (Boyut İndirgeme / Görselleştirme), t-distributed stochastic neighbor embedding, tsne
関連	5	3
概要	Isolation Forest is an unsupervised machine-learning method for anomaly and outlier detection, introduced by Liu, Ting and Zhou in 2008, that isolates anomalies through random partitioning of the data. It works without any labelled anomaly data and scales to high-dimensional datasets.	t-SNE (t-Distributed Stochastic Neighbor Embedding) is a nonlinear dimensionality-reduction method introduced by Laurens van der Maaten and Geoffrey Hinton in 2008 that maps high-dimensional data into a 2D or 3D space for visualization. It preserves probabilistic local similarities, so points that are neighbours in the original space stay close together, revealing cluster structure and local neighbourhoods.