e/Local tangent space alignment

Information
has gloss	eng: Local tangent space alignment (LTSA) is a method for manifold learning, which can efficiently learn nonlinear embedding low-dimensional coordinates of high-dimensional data, and can also reconstruct high dimensional coordinates from embedding coordinates. But it ignores the label information conveyed by data samples, and can not be used for classification directly.
lexicalization	eng: Local Tangent Space Alignment
instance of	(noun) a set of points such as those of a closed surface or an analogue in three or more dimensions manifold