Though, their techniques for proving algorithm convergence and correctness can be readily adapted for our models, (Li et al., 2008) do not incorporate dual supervision as we do.
while (Sindhwani et al., 2008) do incorporate dual supervision in a non-linear kernelbased setting, they do not enforce non-negativity or orthogonality -aspects of matrix factorization models that have shown benefits in prior empirical studies, see e.g., (Ding et al., 2006).