cuqi.testproblem.Poisson1D.sample_posterior#
- Poisson1D.sample_posterior(Ns, Nb=None, callback=None, legacy=False)#
Sample the posterior. Sampler choice and tuning is handled automatically.
- Parameters:
Ns (int) – Number of samples to draw.
Nb (int or None, Optional) – Number of burn-in samples. If not provided, 20% of the samples will be used for burn-in.
callback (callable, Optional) – If set this function will be called after every sample. If the parameter legacy is set to False, which is the default, the callback function should take three arguments: the sampler object, the index of the current sampling step, the total number of requested samples. The last two arguments are integers. An example of the callback function signature in the case is: callback(sampler, sample_index, num_of_samples). If the parameter legacy is set to True, the signature of the callback function is callback(sample, sample_index), where sample is the current sample and sample_index is the index of the sample. An example is shown in demos/demo31_callback.py.
legacy (bool, Optional) – Default is False. If set to True, the sampler selection will use the samplers from the legacy sampler module,
cuqi.legacy.samplermodule.
- Returns:
samples – Samples from the posterior.
- Return type: