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Shakir Mohamed

11 accepted papers

2023

Understanding Deep Generative Models With Generalized Empirical Likelihoods

CVPR 2023highlight

Understanding how well a deep generative model captures a distribution of high-dimensional data remains an important open challenge. It is especially difficult for certain model classes, such as Generative Adversarial Networks and Diffusion Models, whose models do not admit exact likelihoods. In thi…

2019

Training Language GANs from Scratch

NeurIPS 2019poster

Generative Adversarial Networks (GANs) enjoy great success at image generation, but have proven difficult to train in the domain of natural language. Challenges with gradient estimation, optimization instability, and mode collapse have lead practitioners to resort to maximum likelihood pre-training,…

2018

Learning Implicit Generative Models with the Method of Learned Moments

ICML 2018oral

We propose a method of moments (MoM) algorithm for training large-scale implicit generative models. Moment estimation in this setting encounters two problems: it is often difficult to define the millions of moments needed to learn the model parameters, and it is hard to determine which properties ar…

Cited by 30SourcePDFScholar
2018

Many Paths to Equilibrium: GANs Do Not Need to Decrease a Divergence At Every Step

ICLR 2018poster

Generative adversarial networks (GANs) are a family of generative models that do not minimize a single training criterion. Unlike other generative models, the data distribution is learned via a game between a generator (the generative model) and a discriminator (a teacher providing training signal)…

Cited by 265SourcePDFScholar
2017

beta-VAE: Learning Basic Visual Concepts with a Constrained Variational Framework

ICLR 2017poster

Learning an interpretable factorised representation of the independent data generative factors of the world without supervision is an important precursor for the development of artificial intelligence that is able to learn and reason in the same way that humans do. We introduce beta-VAE, a new state…

Cited by 6129SourceScholar
2016

Unsupervised Learning of 3D Structure from Images

NeurIPS 2016poster

A key goal of computer vision is to recover the underlying 3D structure that gives rise to 2D observations of the world. If endowed with 3D understanding, agents can abstract away from the complexity of the rendering process to form stable, disentangled representations of scene elements. In this pap…

Cited by 466SourcePDFScholar
2015

Variational Information Maximisation for Intrinsically Motivated Reinforcement Learning

NeurIPS 2015poster

The mutual information is a core statistical quantity that has applications in all areas of machine learning, whether this is in training of density models over multiple data modalities, in maximising the efficiency of noisy transmission channels, or when learning behaviour policies for exploration…

Cited by 497SourcePDFScholar