Under separability or the sufficiently scattered condition on nonnegative factors and full-rank conditions on core slices or unfoldings, nonnegative Tucker decompositions are essentially unique and are recovered by minimizing core volume.
Advances in Neural Information Processing Systems21 (2008)
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Identifiability of Nonnegative Tucker Decompositions -- Part I: Theory
Under separability or the sufficiently scattered condition on nonnegative factors and full-rank conditions on core slices or unfoldings, nonnegative Tucker decompositions are essentially unique and are recovered by minimizing core volume.