Stochastic Backpropagation and Approximate Inference in Deep Generative Models

Understand

We marry ideas from deep neural networks and approximate Bayesian inference to derive a generalised class of deep, directed generative models, endowed with a new algorithm for scalable inference and learning.

• Our algorithm introduces a recognition model to represent approximate posterior distributions, and that acts as a stochastic encoder of the data.
• We develop stochastic back-propagation -- rules for back-propagation through stochastic variables -- and use this to develop an algorithm that allows for joint optimisation of the parameters of both the generative and recognition model.
• We demonstrate on several real-world data sets that the model generates realistic samples, provides accurate imputations of missing data and is a useful tool for high-dimensional data visualisation.