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Himanshu Sahni

4 accepted papers

2023

In-context Reinforcement Learning with Algorithm Distillation

ICLR 2023top-5%

We propose Algorithm Distillation (AD), a method for distilling reinforcement learning (RL) algorithms into neural networks by modeling their training histories with a causal sequence model. Algorithm Distillation treats learning to reinforcement learn as an across-episode sequential prediction prob…

Cited by 145SourcePDFScholar
2020

Estimating Q(s,s’) with Deep Deterministic Dynamics Gradients

ICML 2020poster

In this paper, we introduce a novel form of value function, $Q(s, s’)$, that expresses the utility of transitioning from a state $s$ to a neighboring state $s’$ and then acting optimally thereafter. In order to derive an optimal policy, we develop a forward dynamics model that learns to make next-st…

Cited by 26SourcePDFScholar
2019

Addressing Sample Complexity in Visual Tasks Using HER and Hallucinatory GANs

NeurIPS 2019poster

Reinforcement Learning (RL) algorithms typically require millions of environment interactions to learn successful policies in sparse reward settings. Hindsight Experience Replay (HER) was introduced as a technique to increase sample efficiency by reimagining unsuccessful trajectories as successful o…

Cited by 10SourcePDFScholar
2019

Imitating Latent Policies from Observation

ICML 2019oral

In this paper, we describe a novel approach to imitation learning that infers latent policies directly from state observations. We introduce a method that characterizes the causal effects of latent actions on observations while simultaneously predicting their likelihood. We then outline an action al…