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Addressing Sample Complexity in Visual Tasks Using HER and Hallucinatory GANs

2019-01-31 · NeurIPS 2019 12 · Himanshu Sahni, Toby Buckley, Pieter Abbeel, Ilya Kuzovkin

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 ones by altering the originally intended goals. However, it cannot be directly applied to visual environments where goal states are often characterized by the presence of distinct visual features. In this work, we show how visual trajectories can be hallucinated to appear successful by altering agent observations using a generative model trained on relatively few snapshots of the goal. We then use this model in combination with HER to train RL agents in visual settings. We validate our approach on 3D navigation tasks and a simulated robotics application and show marked improvement over baselines derived from previous work.

📄 PDF Abstract BibTeX arXiv:1901.11529

Code (2)

maximecb/gym-miniworld 공식 구현 pytorch
offworld-projects/research-halgan 공식 구현 tf

Tasks

Reinforcement LearningReinforcement Learning (RL)

Methods 이 논문이 사용한 방법론

Experience Replay Experience Replay is a replay memory technique used in reinforcement learning where we store the agent’s experiences at each time-step, $e\_{t} = \left(s\_{t}, a\_{t}, r\_{t},…

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