GNRBMF extends NRBMF by adding graph Laplacian regularization on the coefficient matrix to encourage similar representations for nearby samples while retaining non-negativity in the reduced biquaternion domain.
IEEE J our- nal of Selected Topics in Signal Processing 15(2), 174–189 (2021)
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Graph Regularized Non-negative Reduced Biquaternion Matrix Factorization for Color Image Recognition
GNRBMF extends NRBMF by adding graph Laplacian regularization on the coefficient matrix to encourage similar representations for nearby samples while retaining non-negativity in the reduced biquaternion domain.