In addition, in order to give the definition of TPTA, we introduce a generalized linear functional in the
tensor space for the first time.
There are three categories of space mapping transformation algorithms, which are linear space, kernel space, and
tensor space mapping transformation, respectively.
Li, "Face shape recovery from a single image using CCA mapping between
tensor space," In Proc.
Given samples [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII], X is regarded as one datasets in the second-order
tensor space [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII].