techniques:PrincipalComponentAnalysis(PCA)ProbabilisticPCAFactorAnalysis(FA)Classicalmultidimensionalscaling(MDS)SammonmappingLinearDiscriminantAnalysis(LDA)IsomapLandmarkIsomapLocalLinearEmbedding(LLE)LaplacianEigenmapsHessianLLELocalTangentSpaceAlignment(LTSA)ConformalEigenmaps(extensionofL