mlsanityData to 7 Oct 2026

Discriminator Soft Actor Critic without Extrinsic Rewards

arXiv 2001.06808 ↗First posted 19 Jan 2020cs.LG stat.MLcited by 3

On the map: Offline RL and imitation learning from data → Imitation learning methods

Abstract (arXiv)

It is difficult to be able to imitate well in unknown states from a small amount of expert data and sampling data. Supervised learning methods such as Behavioral Cloning do not require sampling data, but usually suffer from distribution shift. The methods based on reinforcement learning, such as inverse reinforcement learning and generative adversarial imitation learning (GAIL), can learn from only a few expert data. However, they often need to interact with the environment. Soft Q imitation learning addressed the problems, and it was shown that it could learn efficiently by combining Behavioral Cloning and soft Q-learning with constant rewards. In order to make this algorithm more robust to distribution shift, we propose Discriminator Soft Actor Critic (DSAC). It uses a reward function based on adversarial inverse reinforcement learning instead of constant rewards. We evaluated it on PyBullet environments with only four expert trajectories.

Key facts. Cited by 3 papers in the map (data through 7 Oct 2026). Placed in Imitation learning methods, one of 13 directions in Offline RL and imitation learning from data. First posted on arXiv 19 Jan 2020.

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Citing papers per year: 2020: 1; 2021: 0; 2022: 2.

3 papers.

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  1. 2024Extrinsicaly Rewarded Soft Q Imitation Learning with Discriminator
  2. 2018Discriminator-Actor-Critic: Addressing Sample Inefficiency and Reward Bias in Adversarial Imitation Learning
  3. 2020Adversarial Soft Advantage Fitting: Imitation Learning without Policy Optimization
  4. 2023Coherent Soft Imitation Learning
  5. 2021IQ-Learn: Inverse soft-Q Learning for Imitation
  6. 2022Discriminator-Weighted Offline Imitation Learning from Suboptimal Demonstrations
  7. 2026Scalable Causal Imitation Learning
  8. 2019SQIL: Imitation Learning via Reinforcement Learning with Sparse Rewards