Importance

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Abstract

A first transforming unit divides a sparse matrix into a first submatrix including a row in which the number of non-zero elements is a predetermined number or more and a second submatrix including a row other than the row, and transforms the first submatrix into a row-major order dense matrix format. A second transforming unit divides the second submatrix into a third submatrix including a column in which the number of non-zero elements is a predetermined number or more and a fourth submatrix including a column other than the column, and transforms the third submatrix into a column-major order dense matrix format. A third transforming unit divides the fourth submatrix into a fifth submatrix and a sixth submatrix, and transforms the fifth submatrix into a row-major order sparse matrix compression format. A fourth transforming unit transforms the sixth submatrix into a column-major order sparse matrix compression format.

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First Claim