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Karol Gregor

10 accepted papers

2023

Human-Timescale Adaptation in an Open-Ended Task Space

ICML 2023oral

Foundation models have shown impressive adaptation and scalability in supervised and self-supervised learning problems, but so far these successes have not fully translated to reinforcement learning (RL). In this work, we demonstrate that training an RL agent at scale leads to a general in-context l…

Cited by 111SourcePDFScholar
2019

An Investigation of Model-Free Planning

ICML 2019oral

The field of reinforcement learning (RL) is facing increasingly challenging domains with combinatorial complexity. For an RL agent to address these challenges, it is essential that it can plan effectively. Prior work has typically utilized an explicit model of the environment, combined with a specif…

2019

Shaping Belief States with Generative Environment Models for RL

NeurIPS 2019poster

When agents interact with a complex environment, they must form and maintain beliefs about the relevant aspects of that environment. We propose a way to efficiently train expressive generative models in complex environments. We show that a predictive algorithm with an expressive generative model can…

Cited by 127SourcePDFScholar
2019

Temporal Difference Variational Auto-Encoder

ICLR 2019oral

To act and plan in complex environments, we posit that agents should have a mental simulator of the world with three characteristics: (a) it should build an abstract state representing the condition of the world; (b) it should form a belief which represents uncertainty on the world; (c) it should go…

Cited by 161SourcePDFScholar
2018

Learning Attractor Dynamics for Generative Memory

NeurIPS 2018poster

A central challenge faced by memory systems is the robust retrieval of a stored pattern in the presence of interference due to other stored patterns and noise. A theoretically well-founded solution to robust retrieval is given by attractor dynamics, which iteratively cleans up patterns during recall…

2016

One-Shot Generalization in Deep Generative Models

ICML 2016poster

Humans have an impressive ability to reason about new concepts and experiences from just a single example. In particular, humans have an ability for one-shot generalization: an ability to encounter a new concept, understand its structure, and then be able to generate compelling alternative variation…

Cited by 319SourcePDFScholar
2016

Towards Conceptual Compression

NeurIPS 2016poster

We introduce convolutional DRAW, a homogeneous deep generative model achieving state-of-the-art performance in latent variable image modeling. The algorithm naturally stratifies information into higher and lower level details, creating abstract features and as such addressing one of the fundamentall…

Cited by 298SourcePDFScholar
2015

DRAW: A Recurrent Neural Network For Image Generation

ICML 2015poster

This paper introduces the Deep Recurrent Attentive Writer (DRAW) architecture for image generation with neural networks. DRAW networks combine a novel spatial attention mechanism that mimics the foveation of the human eye, with a sequential variational auto-encoding framework that allows for the ite…

Cited by 2594SourcePDFScholar
2015

MADE: Masked Autoencoder for Distribution Estimation

ICML 2015poster

There has been a lot of recent interest in designing neural network models to estimate a distribution from a set of examples. We introduce a simple modification for autoencoder neural networks that yields powerful generative models. Our method masks the autoencoder’s parameters to respect autoregres…