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Principal component analysis (PCA) is a linear dimensionality reduction technique with applications in exploratory data analysis, visualization and data preprocessing.. The data is linearly transformed onto a new coordinate system such that the directions (principal components) capturing the largest variation in the data can be easily identified.
In statistics, principal component regression (PCR) is a regression analysis technique that is based on principal component analysis (PCA). PCR is a form of reduced rank regression. [1] More specifically, PCR is used for estimating the unknown regression coefficients in a standard linear regression model.
Multilinear principal component analysis (MPCA) is a multilinear extension of principal component analysis (PCA) that is used to analyze M-way arrays, also informally referred to as "data tensors". M-way arrays may be modeled by linear tensor models, such as CANDECOMP/Parafac, or by multilinear tensor models, such as multilinear principal ...
Sri Lanka Freedom Party: 19 October 2000 - 12 December 2001 Chandrika Kumaratunga [14] [15] [16] Lakshman Kiriella: United National Party: 12 December 2001 – 2 April 2004 [17] [18] Anura Priyadharshana Yapa: Sri Lanka Freedom Party: 10 April 2004 - 23 November 2005 [19] [20] [21] Milroy Fernando: Sri Lanka Freedom Party: 23 November 2005 - 28 ...
Pelwatte Sugar Industries PLC is a Sri Lankan sugar manufacturing company, which is listed on the Colombo Stock Exchange.The main sugar factory of the group is located in Buttala in the Moneragala District, Uva Province, about 225 kilometres (140 mi) from Colombo to the east of the country.
Within the field of molecular biology, a protein-fragment complementation assay, or PCA, is a method for the identification and quantification of protein–protein interactions. In the PCA, the proteins of interest ("bait" and "prey") are each covalently linked to fragments of a third protein (e.g. DHFR, which acts as a "reporter").
Output after kernel PCA, with a Gaussian kernel. Note in particular that the first principal component is enough to distinguish the three different groups, which is impossible using only linear PCA, because linear PCA operates only in the given (in this case two-dimensional) space, in which these concentric point clouds are not linearly separable.
Protocatechuic acid (PCA) is a dihydroxybenzoic acid, a type of phenolic acid. It is a major metabolite of antioxidant polyphenols found in green tea . It has mixed effects on normal and cancer cells in in vitro and in vivo studies. [ 4 ]