Probabilistic Latent Variable Models as Nonnegative Factorizations
Figure 6
Illustration
of the latent variable model. Panel shows 3-dimensional data distributions as
points within the Standard 2-Simplex given by . The model approximates data distributions as points
lying within the convex hull formed by the components (basis vectors). Also
shown are two data points (marked by and ) and their
approximations by the model (resp., shown by ◊ and □).