Nonnegative Tucker decompositionGiven a nonnegative tensor , the problem seeks a nonnegative core tensor and nonnegative matrices such that or , where “” denotes mode tensormatrix product. Given a tensor and a matrix , the product is defined by The decomposition is modeled as the optimization problem where the Frobenius norm of a tensor is defined as More information about tensor and its decomposition can be found in this review paper.
Matlab code of BCU with proxlinear update and extrapolation
