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NUMERICAL CALCULATION METHOD FOR NON-NEGATIVE MATRIX FACTORIZATION, NUMERICAL CALCULATION DEVICE FOR NON-NEGATIVE MATRIX FACTORIZATION, PROGRAM AND STORAGE MEDIUM
NUMERICAL CALCULATION METHOD FOR NON-NEGATIVE MATRIX FACTORIZATION, NUMERICAL CALCULATION DEVICE FOR NON-NEGATIVE MATRIX FACTORIZATION, PROGRAM AND STORAGE MEDIUM
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机译：非负矩阵分解的数值计算方法，非负矩阵分解的数值计算装置，程序和存储介质
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摘要
PROBLEM TO BE SOLVED: To perform NMF (Non-negative Matrix Factorization) by adaptively estimating, from data comprising non-negative values (each value ≥0) such as a spectrogram of an acoustic signal or an image, a distribution shape of statistical distribution of observation data with a function defined by mixture distribution of the Poisson distribution and the Gaussian distribution as a likelihood function.;SOLUTION: Initial values of a base matrix, a mixture ratio and a weight matrix of the Poisson distribution and the Gaussian distribution are generated, the mixture ratio is updated by a Gaussian distribution rate matrix generated by dispersion of the Gaussian distribution based on the observation data, and update of the base matrix and the weight matrix is repeated until convergence is performed.;COPYRIGHT: (C)2010,JPO&INPIT
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