bilby.core.sampler.proposal.EnsembleStretch

class bilby.core.sampler.proposal.EnsembleStretch(scale=2.0, priors=None)

Bases: JumpProposal

__init__(scale=2.0, priors=None)

Stretch move. Calculates the log Jacobian which can be used in cpnest to bias future moves.

Parameters:

scale: float, optional

Stretching scale. Default is 2.0.

__call__(sample, **kwargs)

A generic wrapper for the jump proposal function

Parameters:

args: Arguments that are going to be passed into the proposal function

kwargs: Keyword arguments that are going to be passed into the proposal function

Returns:

dict: A dictionary with the new samples. Boundary conditions are applied.

Methods

__init__([scale, priors])

Stretch move.