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Reinforcement learning is well-studied under discrete actions. Integer actions setting is popular in the industry yet still challenging due to its high dimensionality. To this end, we study reinforcement learning under integer actions by…

Machine Learning · Computer Science 2022-03-15 Ting-Han Fan , Yubo Wang

Recent advances in deep Reinforcement Learning (RL) have created unprecedented opportunities for intelligent automation, where a machine can autonomously learn an optimal policy for performing a given task. However, current deep RL…

Machine Learning · Computer Science 2021-05-27 Zohreh Raziei , Mohsen Moghaddam

Balancing reward and safety in constrained reinforcement learning remains challenging due to poor generalization from sharp value minima and inadequate handling of heavy-tailed risk distribution. We introduce Safe Langevin Soft Actor-Critic…

Machine Learning · Computer Science 2026-02-03 Mahesh Keswani , Samyak Jain , Raunak P. Bhattacharyya

Most prior approaches to offline reinforcement learning (RL) utilize \textit{behavior regularization}, typically augmenting existing off-policy actor critic algorithms with a penalty measuring divergence between the policy and the offline…

Machine Learning · Computer Science 2021-10-15 Haoran Xu , Xianyuan Zhan , Jianxiong Li , Honglei Yin

Reinforcement learning provides a powerful and general framework for decision making and control, but its application in practice is often hindered by the need for extensive feature and reward engineering. Deep reinforcement learning…

Machine Learning · Computer Science 2018-08-15 Justin Fu , Katie Luo , Sergey Levine

Imitation learning algorithms can be used to learn a policy from expert demonstrations without access to a reward signal. However, most existing approaches are not applicable in multi-agent settings due to the existence of multiple (Nash)…

Machine Learning · Computer Science 2018-07-27 Jiaming Song , Hongyu Ren , Dorsa Sadigh , Stefano Ermon

Actor critic methods with sparse rewards in model-based deep reinforcement learning typically require a deterministic binary reward function that reflects only two possible outcomes: if, for each step, the goal has been achieved or not. Our…

Machine Learning · Computer Science 2020-01-22 Juan Vargas , Lazar Andjelic , Amir Barati Farimani

In federated learning (FL), model aggregation has been widely adopted for data privacy. In recent years, assigning different weights to local models has been used to alleviate the FL performance degradation caused by differences between…

Machine Learning · Computer Science 2022-02-01 Chenghao Huang , Weilong Chen , Yuxi Chen , Shunji Yang , Yanru Zhang

Autonomous driving with reinforcement learning (RL) has significant potential. However, applying RL in real-world settings remains challenging due to the need for safe, efficient, and robust learning. Incorporating human expertise into the…

Machine Learning · Computer Science 2025-10-08 Li Zeqiao , Wang Yijing , Wang Haoyu , Li Zheng , Li Peng , Liu Wenfei , Zuo Zhiqiang

This research is concerned with the novel application and investigation of `Soft Actor Critic' (SAC) based Deep Reinforcement Learning (DRL) to control the cooling setpoint (and hence cooling loads) of a large commercial building to harness…

Machine Learning · Computer Science 2021-07-08 Anjukan Kathirgamanathan , Eleni Mangina , Donal P. Finn

The deployment of robots in uncontrolled environments requires them to operate robustly under previously unseen scenarios, like irregular terrain and wind conditions. Unfortunately, while rigorous safety frameworks from robust optimal…

Machine Learning · Computer Science 2024-06-11 Kai-Chieh Hsu , Duy Phuong Nguyen , Jaime Fernández Fisac

Advances in Reinforcement Learning (RL) have demonstrated data efficiency and optimal control over large state spaces at the cost of scalable performance. Genetic methods, on the other hand, provide scalability but depict hyperparameter…

Machine Learning · Computer Science 2021-01-19 Karush Suri , Xiao Qi Shi , Konstantinos N. Plataniotis , Yuri A. Lawryshyn

Robust real-world learning should benefit from both demonstrations and interactions with the environment. Current approaches to learning from demonstration and reward perform supervised learning on expert demonstration data and use…

Artificial Intelligence · Computer Science 2019-05-31 Yang Gao , Huazhe Xu , Ji Lin , Fisher Yu , Sergey Levine , Trevor Darrell

In cooperative teams where agents act in a fixed order and share a single team-level reward (multi-agent language systems, sequential robotic tasks), per-agent credit assignment is under-determined. Critic-based approaches scale poorly as…

Machine Learning · Computer Science 2026-05-12 Shripad Deshmukh , Jayakumar Subramanian , Raghavendra Addanki , Nikos Vlassis

Multi-agent deep reinforcement learning has been applied to address a variety of complex problems with either discrete or continuous action spaces and achieved great success. However, most real-world environments cannot be described by only…

Machine Learning · Computer Science 2022-06-13 Hongzhi Hua , Kaigui Wu , Guixuan Wen

In this paper, we describe NeurIPS 2019 Learning to Move - Walk Around challenge physics-based environment and present our solution to this competition which scored 1303.727 mean reward points and took 3rd place. Our method combines recent…

Artificial Intelligence · Computer Science 2020-04-13 Dmitry Akimov

Adversarial imitation learning (AIL) has stood out as a dominant framework across various imitation learning (IL) applications, with Discriminator Actor Critic (DAC) (Kostrikov et al.,, 2019) demonstrating the effectiveness of off-policy…

Machine Learning · Computer Science 2024-04-15 Jonathan D. Chang , Dhruv Sreenivas , Yingbing Huang , Kianté Brantley , Wen Sun

Model-free deep reinforcement learning (RL) has been successfully applied to challenging continuous control domains. However, poor sample efficiency prevents these methods from being widely used in real-world domains. This paper introduces…

Machine Learning · Computer Science 2022-10-27 Sicen Li , Qinyun Tang , Yiming Pang , Xinmeng Ma , Gang Wang

When creating new reinforcement learning tasks, practitioners often accelerate the learning process by incorporating into the task several accessory components, such as breaking the environment interaction into independent episodes and…

Machine Learning · Computer Science 2025-12-09 Homayoon Farrahi , A. Rupam Mahmood

We present the ADaptive Adversarial Imitation Learning (ADAIL) algorithm for learning adaptive policies that can be transferred between environments of varying dynamics, by imitating a small number of demonstrations collected from a single…

Machine Learning · Computer Science 2020-08-31 Yiren Lu , Jonathan Tompson