众包中使用变分推断和信念传播的几篇文章

### 后续补上此总结。

1. Sequential crowdsourced labeling as an epsilon-greedy exploration in a Markov Decision Process (AISTATS14)

2. Variational Inference for Crowdsourcing (NIPS 12)

3. [KOS] Iterative Learning for Reliable Crowdsourcing Systems

4.Optimality of Belief Propagation for Crowdsourced Classification