The image of the cow is represented by the non-negative matrix 64 x 64 dimensional matrix X and a bilinear model for X was inferred. RJMCMC, Chib, and TI were used to otain the posterior over M. The bar plots show the posterior for M obtained by each method. We can see that for this example the model posterior is not concentrated fully on one model. The image was downloaded from http://www.cs.helsinki.fi/u/phoyer/NCimages.html.