Figure 10. Graphical Representation of the Proposed Model.

A simple graphical representation of the model, where Δt_k is the microtime k with k = 1, …, K. The inverse lifetime of species m is shown by λ_m, m = 1, …, M. The label s_k tells us which of the species is contributing the k^th photon. In the graphical model, the measured data are denoted by gray-shaded circles and the model variables, which require priors, are designated by blue circles. Each one of the labels has a prior, which is a Dirichlet probability $\overline{\pi }$.