Performs a sparse singular value decomposition of the document term matrix. See Latent Semantic Analysis (SVD).

Performs a varimax rotated singular value decomposition of the document term matrix to produce groups of terms called topics. See Topic Analysis.

SVD Specification Window shows the Singular Value Decomposition Specifications window. When you select options from the Text Explorer red triangle menu that perform a singular value decomposition on the document term matrix, the Specifications window appears with the following options:

The weighting scheme that determines the values that go into the cells of the document term matrix. The weighting scheme options are described in Document Term Matrix Specifications Window.

Options for centering and scaling of the document term matrix. You can choose between Centered, Centered and Scaled, and Uncentered. By default, the document term matrix is both centered and scaled.