Mcmc.Proposal.Bactrian

Creation date: Thu Jun 25 15:49:48 2020.

See https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3845170/.

Documentation

type SpikeParameter = Double

Type synonym indicating the spike parameter.

slideBactrian :: SpikeParameter -> StandardDeviation Double -> PName -> PWeight -> Tune -> Proposal Double

Additive symmetric proposal with kernel similar to the silhouette of a Bactrian camel.

The Bactrian kernel is a mixture of two symmetrically arranged normal distributions. The spike parameter \(m \in (0, 1)\) loosely determines the standard deviations of the individual humps while the second parameter \(s > 0\) refers to the standard deviation of the complete Bactrian kernel.

See https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3845170/.

scaleBactrian :: SpikeParameter -> StandardDeviation Double -> PName -> PWeight -> Tune -> Proposal Double

Multiplicative proposal with kernel similar to the silhouette of a Bactrian camel.

See scale, and slideBactrian.