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Tom Griffiths

8 accepted papers

2022

Distinguishing rule and exemplar-based generalization in learning systems

ICML 2022spotlight

Machine learning systems often do not share the same inductive biases as humans and, as a result, extrapolate or generalize in ways that are inconsistent with our expectations. The trade-off between exemplar- and rule-based generalization has been studied extensively in cognitive psychology; in this…

2021

Modularity in Reinforcement Learning via Algorithmic Independence in Credit Assignment

ICML 2021oral

Many transfer problems require re-using previously optimal decisions for solving new tasks, which suggests the need for learning algorithms that can modify the mechanisms for choosing certain actions independently of those for choosing others. However, there is currently no formalism nor theory for…

Cited by 12SourcePDFScholar
2020

Decentralized Reinforcement Learning: Global Decision-Making via Local Economic Transactions

ICML 2020poster

This paper seeks to establish a framework for directing a society of simple, specialized, self-interested agents to solve what traditionally are posed as monolithic single-agent sequential decision problems. What makes it challenging to use a decentralized approach to collectively optimize a central…

2019

On the Utility of Learning about Humans for Human-AI Coordination

NeurIPS 2019poster

While we would like agents that can coordinate with humans, current algorithms such as self-play and population-based training create agents that can coordinate with themselves. Agents that assume their partner to be optimal or similar to them can converge to coordination protocols that fail to unde…

2019

Reconciling meta-learning and continual learning with online mixtures of tasks

NeurIPS 2019spotlight

Learning-to-learn or meta-learning leverages data-driven inductive bias to increase the efficiency of learning on a novel task. This approach encounters difficulty when transfer is not advantageous, for instance, when tasks are considerably dissimilar or change over time. We use the connection betwe…

Cited by 142SourcePDFScholar
2018

Capturing Human Category Representations by Sampling in Deep Feature Spaces

ICLR 2018workshop

Understanding how people represent categories is a core problem in cognitive science, with the flexibility of human learning remaining a gold standard to which modern artificial intelligence and machine learning aspire. Decades of psychological research have yielded a variety of formal theories of c…

Cited by 7SourceScholar
2018

Investigating Human Priors for Playing Video Games

ICML 2018oral

What makes humans so good at solving seemingly complex video games? Unlike computers, humans bring in a great deal of prior knowledge about the world, enabling efficient decision making. This paper investigates the role of human priors for solving video games. Given a sample game, we conduct a serie…

2017

A graph-theoretic approach to multitasking

NeurIPS 2017oral

A key feature of neural network architectures is their ability to support the simultaneous interaction among large numbers of units in the learning and processing of representations. However, how the richness of such interactions trades off against the ability of a network to simultaneously carry ou…

Cited by 18SourcePDFScholar