Principal component analysis — PCA of a multivariate Gaussian distribution centered at (1,3) with a standard deviation of 3 in roughly the (0.878, 0.478) direction and of 1 in the orthogonal direction. The vectors shown are the eigenvectors of the covariance matrix scaled by… … Wikipedia
Nonlinear dimensionality reduction — High dimensional data, meaning data that requires more than two or three dimensions to represent, can be difficult to interpret. One approach to simplification is to assume that the data of interest lies on an embedded non linear manifold within… … Wikipedia
Mel Gibson — This article is about the actor. For the basketball player, see Mel Gibson (basketball). Mel Gibson Mel Gibson at the 2011 Cannes Film Festival … Wikipedia
Scale-invariant feature transform — Feature detection Output of a typical corner detection algorithm … Wikipedia
Non-negative matrix factorization — NMF redirects here. For the bridge convention, see new minor forcing. Non negative matrix factorization (NMF) is a group of algorithms in multivariate analysis and linear algebra where a matrix, , is factorized into (usually) two matrices, and… … Wikipedia
Matching pursuit — Signal reconstruction with matching pursuit algorithm. Matching pursuit is a type of numerical technique which involves finding the best matching projections of multidimensional data onto an over complete dictionary D. The basic idea is to… … Wikipedia
Eigenvalues and eigenvectors — For more specific information regarding the eigenvalues and eigenvectors of matrices, see Eigendecomposition of a matrix. In this shear mapping the red arrow changes direction but the blue arrow does not. Therefore the blue arrow is an… … Wikipedia
MDMA — Systematic (IUPAC) name (RS) 1 (benzo[d][1,3]dioxol 5 … Wikipedia
Гистограмма направленных градиентов — (англ. Histogram of Oriented Gradients, HOG) – дескрипторы особых точек, которые используются в компьютерном зрении и обработке изображений с целью распознавания … Википедия
Benzylpiperazine — Systematic (IUPAC) name 1 benzylpiperazine … Wikipedia
