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discrete_model [2018/11/03 12:27]
discrete_model [2019/01/12 11:02] (current)
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 an invertible neural network with a structured an invertible neural network with a structured
 generative prior. ​ generative prior. ​
 +https://​arxiv.org/​abs/​1901.00409v1 Discrete Neural Processes
 +In this work we develop methods for efficient amortized approximate Bayesian inference over discrete combinatorial spaces, with applications to random permutations,​ probabilistic clustering (such as Dirichlet process mixture models) and random communities (such as stochastic block models). The approach is based on mapping distributed,​ symmetry-invariant representations of discrete arrangements into conditional probabilities. The resulting algorithms parallelize easily, yield iid samples from the approximate posteriors, and can easily be applied to both conjugate and non-conjugate models, as training only requires samples from the generative model.