To obtain the SVA objective from the parametric MJP model, we begin by scaling the exponential distribution f(t;λ) = λ exp(−λt), which is an exponential family distribution with natural parameter η = −λ, log-partition function ψ(η) = − ln(−η), and base measure ν(dt) = 1 [1]. To scale the distribution, introduce the new natural parameter η̃ = βη and log-partition function ψ̃(η̃) = βψ(η̃/β). The new ...
