TENSOR DATA CALCULATION DEVICE, TENSOR DATA CALCULATION METHOD, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a tensor data calculation device capable of increasing the processing speed for nonnegative tensor factorization.;SOLUTION: The tensor data calculation device has a matrix multiplication processor and decomposes N-th (N is an integer of 2 or more) nonnegative tensor data into N factor matrices by factorization. The tensor data calculation device includes: factor decomposition means that expresses an updated formula of a factor matrix to optimize given objective function values in a format of a matrix product that includes a first matrix obtained by expanding the other N-1 factor matrices other than the factor matrix by Kronecker product and a second matrix defined by the nonnegative tensor data and the tensor product of the N factor matrices and calculates the updated formula; and matrix calculation means that calculates the matrix product included in the updated formula by a matrix product calculation processor. The factor decomposition means calculates the updated formula by using the calculation result of the matrix product calculated by the matrix calculation means.;SELECTED DRAWING: Figure 3;COPYRIGHT: (C)2020,JPO&INPIT