.. _chap_distributions: ************************* Probability distributions ************************* PyMC provides a large suite of built-in probability distributions. For each distribution, it provides: * A function that evaluates its log-probability or log-density: normal_like(). * A function that draws random variables: rnormal(). * A function that computes the expectation associated with the distribution: normal_expval(). * A Stochastic subclass generated from the distribution: Normal. This section describes the likelihood functions of these distributions. .. module:: pymc.distributions Discrete distributions ====================== .. autofunction:: bernoulli_like .. autofunction:: binomial_like .. autofunction:: categorical_like .. autofunction:: discrete_uniform_like .. autofunction:: geometric_like .. autofunction:: hypergeometric_like .. autofunction:: negative_binomial_like .. autofunction:: poisson_like .. autofunction:: truncated_poisson_like Continuous distributions ======================== .. autofunction:: beta_like .. autofunction:: cauchy_like .. autofunction:: chi2_like .. autofunction:: degenerate_like .. autofunction:: exponential_like .. autofunction:: exponweib_like .. autofunction:: gamma_like .. autofunction:: half_cauchy_like .. autofunction:: half_normal_like .. autofunction:: inverse_gamma_like .. autofunction:: laplace_like .. autofunction:: logistic_like .. autofunction:: lognormal_like .. autofunction:: noncentral_t_like .. autofunction:: normal_like .. autofunction:: pareto_like .. autofunction:: skew_normal_like .. autofunction:: t_like .. autofunction:: truncated_normal_like .. autofunction:: truncated_pareto_like .. autofunction:: uniform_like .. autofunction:: von_mises_like .. autofunction:: weibull_like Multivariate discrete distributions =================================== .. autofunction:: multivariate_hypergeometric_like .. autofunction:: multinomial_like Multivariate continuous distributions ===================================== .. autofunction:: dirichlet_like .. autofunction:: mv_normal_like .. autofunction:: mv_normal_chol_like .. autofunction:: mv_normal_cov_like .. autofunction:: wishart_like .. autofunction:: wishart_cov_like