The matrix V T describes the importance degree of each 'implicit topic' in each sentence: the summarization process simply chooses the most informative sentence for each term.
the kth sentence chosen is the one with the largest index value in the kth right singular vector in matrix The summarization method proposed by Gong and Liu has some disadvantages as well, the main of which is that it is necessary to use the same number of dimensions as is the number of sentences we want to choose for a summary.