مقایسهٔ روش‌ها

	تحلیل تبعیضی خطی (LDA	کی-نزدیک‌ترین همسایگان
حوزه	آمار	یادگیری ماشین
خانواده	Hypothesis test	Machine learning
سال پیدایش	1936	1967
پدیدآور	Ronald A. Fisher	Cover, T.M. & Hart, P.E.
نوع	Parametric linear classifier / dimensionality reduction	Instance-based (non-parametric) learning
منبع بنیادین	Fisher, R.A. (1936). The Use of Multiple Measurements in Taxonomic Problems. Annals of Eugenics, 7(2), 179–188.	Cover, T.M. & Hart, P.E. (1967). Nearest Neighbor Pattern Classification. IEEE Transactions on Information Theory, 13(1), 21–27.
نام‌های دیگر	LDA, Fisher's LDA, Fisher's linear discriminant, discriminant function analysis	KNN, K-En Yakın Komşu (KNN), nearest neighbor classifier, instance-based learning
مرتبط	7	5
خلاصه	Linear Discriminant Analysis (LDA) is a parametric supervised classification method that finds the linear combination of continuous predictors that best separates two or more predefined groups. Introduced by Ronald A. Fisher in his landmark 1936 paper on taxonomic measurements, it simultaneously serves as a classifier and a dimensionality-reduction tool, and can be understood as the classification-oriented counterpart of MANOVA.	K-Nearest Neighbors (KNN), formalized by Cover and Hart in 1967, is a non-parametric, instance-based method that classifies or predicts a new observation by looking at the k closest examples in the training data. For classification it takes a majority vote among those neighbors; for regression it averages their values.