def __init__(self, target, proposal, indicator=None, prealloc=0,
save_target_values=False, rng=_np.random.mtrand):
self.proposal = _cp(proposal)
self.rng = rng
self.target = _indmerge(target, indicator, -_np.inf)
self.target_values = _History(1, prealloc) if save_target_values else None
self.weights = _History(1, prealloc)
self.samples = _History(proposal.dim, prealloc)
def __init__(self, target, proposal, indicator=None, prealloc=0,
save_target_values=False, rng=_np.random.mtrand):
self.proposal = _cp(proposal)
self.rng = rng
self.target = _indmerge(target, indicator, -_np.inf)
self.target_values = _History(1, prealloc) if save_target_values else None
self.weights = _History(1, prealloc)
self.samples = _History(proposal.dim, prealloc)
def __init__(self, target, proposal, start, indicator=None,
prealloc=0, save_target_values=False, rng=_np.random.mtrand):
# store input into instance
self.current_point = _np.array(start, dtype=float) # call array constructor to make sure to have a copy
self.samples = _History(len(self.current_point), prealloc)
self.proposal = _cp(proposal)
self.rng = rng
self.target = _indmerge(target, indicator, -_np.inf)
self.target_values = _History(1, prealloc) if save_target_values else None
self.current_target_eval = self.target(self.current_point)
if not _np.isfinite(self.current_target_eval):
raise ValueError('``target(start)`` must evaluate to a finite value and ``indicator(start)`` must be ``True``')
def __init__(self, target, proposal, start, indicator=None,
prealloc=0, save_target_values=False, rng=_np.random.mtrand):
# store input into instance
self.current_point = _np.array(start, dtype=float) # call array constructor to make sure to have a copy
self.samples = _History(len(self.current_point), prealloc)
self.proposal = _cp(proposal)
self.rng = rng
self.target = _indmerge(target, indicator, -_np.inf)
self.target_values = _History(1, prealloc) if save_target_values else None
self.current_target_eval = self.target(self.current_point)
if not _np.isfinite(self.current_target_eval):
raise ValueError('``target(start)`` must evaluate to a finite value and ``indicator(start)`` must be ``True``')
def shape(self):
dims = _cp(self._dims)
return dims