Neural nets

sbi.neural_nets.classifier_nn	Returns a function that builds a classifier for learning density ratios.
sbi.neural_nets.likelihood_nn	Returns a function that builds a density estimator for learning the likelihood.
sbi.neural_nets.marginal_nn	Returns a function that builds a density estimator for learning the marginal.
sbi.neural_nets.posterior_flow_nn	Build util function that builds a FlowMatchingEstimator object for flow-based posteriors.
sbi.neural_nets.posterior_nn	Returns a function that builds a density estimator for learning the posterior.
sbi.neural_nets.posterior_score_nn	Build util function that builds a ScoreEstimator object for score-based posteriors.