Dirichlet process mixture models (DPMM) are a cornerstone of Bayesian
non-parametrics. While these models free from choosing the number of components
a-priori, computationally attractive variational inference often reintroduces
the need to do so, via a truncation on the variational distribution. In this
paper we present a truncation-free hybrid inference for DPMM, combining the
advantages of sampling-based MCMC and variational methods. The proposed
hybridization enables more efficient variational updates, while increasing
model complexity only if needed. We evaluate the properties of the hybrid
updates and their empirical performance in single- as well as mixed-membership
models. Our method is easy to implement and performs favorably compared to
existing schemas.

本文提出了一种基于抽样 MCMC 和变分方法的截断无关的 DPMM 混合模型推断方法，旨在提高 DPMM 变分更新的效率并仅在必要时增加模型复杂度，且在单成员模型和混合成员模型中均表现良好。

无截断的 DPMM 混合推理

Truncation-free Hybrid Inference for DPMM

Modeling structure in complex networks using Bayesian non-parametrics makes
it possible to specify flexible model structures and infer the adequate model
complexity from the observed data. This paper provides a gentle introduction to
non-parametric Bayesian modeling of complex networks: Using an infinite mixture
model as running example we go through the steps of deriving the model as an
infinite limit of a finite parametric model, inferring the model parameters by
Markov chain Monte Carlo, and checking the model's fit and predictive
performance. We explain how advanced non-parametric models for complex networks
can be derived and point out relevant literature.

该研究介绍了如何使用贝叶斯非参数理论来建模并分析复杂网络，特别是使用无限混合模型作为案例来演示，包括通过马尔科夫蒙特卡罗推断模型参数，并通过检查模型的适配性和预测性能来验证模型。