Research Article

Nonnegative Matrix Factorization with Gaussian Process Priors

Figure 2

Underlying nonnegative factors in the toy example: columns of (left) and rows of (right). The factors found by the LS-NMF and the CNMF algorithms are noisy, whereas the factors found by the GPP-NMF method are smooth. When using the correct prior, the factors found are very similar to the true factors.
361705.fig.002a
(a)
361705.fig.002b
(b)