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Offline Reinforcement Learning (ORL) offers a robust solution to training agents in applications where interactions with the environment must be strictly limited due to cost, safety, or lack of accurate simulation environments. Despite its…

Machine Learning · Computer Science 2024-07-16 Carlo Romeo , Andrew D. Bagdanov

Applying reinforcement learning (RL) to sparse reward domains is notoriously challenging due to insufficient guiding signals. Common RL techniques for addressing such domains include (1) learning from demonstrations and (2) curriculum…

Machine Learning · Computer Science 2023-03-29 Vaibhav Bajaj , Guni Sharon , Peter Stone

This paper develops a data-driven inverse reinforcement learning technique for a class of linear systems to estimate the cost function of an agent online, using input-output measurements. A simultaneous state and parameter estimator is…

Systems and Control · Computer Science 2021-07-07 Rushikesh Kamalapurkar

When learning to behave in a stochastic environment where safety is critical, such as driving a vehicle in traffic, it is natural for human drivers to plan fallback strategies as a backup to use if ever there is an unexpected change in the…

Machine Learning · Computer Science 2022-04-12 Ugo Lecerf , Christelle Yemdji-Tchassi , Sébastien Aubert , Pietro Michiardi

With the continuous development of machine learning technology, major e-commerce platforms have launched recommendation systems based on it to serve a large number of customers with different needs more efficiently. Compared with…

Machine Learning · Computer Science 2020-12-14 Yang Yu , Zhenhao Gu , Rong Tao , Jingtian Ge , Kenglun Chang

For many reinforcement learning (RL) applications, specifying a reward is difficult. This paper considers an RL setting where the agent obtains information about the reward only by querying an expert that can, for example, evaluate…

Machine Learning · Computer Science 2022-02-01 David Lindner , Matteo Turchetta , Sebastian Tschiatschek , Kamil Ciosek , Andreas Krause

Exploration efficiency is a challenging problem in multi-agent reinforcement learning (MARL), as the policy learned by confederate MARL depends on the collaborative approach among multiple agents. Another important problem is the less…

Machine Learning · Computer Science 2019-12-30 Qisheng Wang , Qichao Wang

Replaying past experiences has proven to be a highly effective approach for averting catastrophic forgetting in supervised continual learning. However, some crucial factors are still largely ignored, making it vulnerable to serious failure,…

Machine Learning · Computer Science 2023-11-21 Tiantian Zhang , Kevin Zehua Shen , Zichuan Lin , Bo Yuan , Xueqian Wang , Xiu Li , Deheng Ye

Reinforcement learning refers to a group of methods from artificial intelligence where an agent performs learning through trial and error. It differs from supervised learning, since reinforcement learning requires no explicit labels;…

Machine Learning · Computer Science 2018-10-02 Nicolas Pröllochs , Stefan Feuerriegel

Traditional model-based reinforcement learning (RL) methods generate forward rollout traces using the learnt dynamics model to reduce interactions with the real environment. The recent model-based RL method considers the way to learn a…

Machine Learning · Computer Science 2022-08-05 Yuxin Pan , Fangzhen Lin

Single-task RL agents are typically trained under a fixed reward function, which limits their robustness to reward misspecification and their ability to adapt to changing preferences. We introduce Reward-Conditioned Reinforcement Learning…

Machine Learning · Computer Science 2026-05-20 Michal Nauman , Marek Cygan , Pieter Abbeel

Reward functions are central in reinforcement learning (RL), guiding agents towards optimal decision-making. The complexity of RL tasks requires meticulously designed reward functions that effectively drive learning while avoiding…

Machine Learning · Computer Science 2025-03-31 Rati Devidze

Transfer learning is an important new subfield of multiagent reinforcement learning that aims to help an agent learn about a problem by using knowledge that it has gained solving another problem, or by using knowledge that is communicated…

Artificial Intelligence · Computer Science 2020-02-10 Cameron Reid

We transform reinforcement learning (RL) into a form of supervised learning (SL) by turning traditional RL on its head, calling this Upside Down RL (UDRL). Standard RL predicts rewards, while UDRL instead uses rewards as task-defining…

Artificial Intelligence · Computer Science 2020-06-24 Juergen Schmidhuber

This work concerns itself with the task of reconstructing all edges of an arbitrary 3D wire-frame model projected to an image plane. We explore a bottom-up part-wise procedure undertaken by an RL agent to segment and reconstruct these 2D…

Machine Learning · Computer Science 2025-03-24 Julian Ziegler , Patrick Frenzel , Mirco Fuchs

In recent times, reinforcement learning has produced baffling results when it comes to performing control tasks with highly non-linear systems. The impressive results always outweigh the potential vulnerabilities or uncertainties associated…

Robotics · Computer Science 2023-11-14 Arshad Javeed

A key barrier to using reinforcement learning (RL) in many real-world applications is the requirement of a large number of system interactions to learn a good control policy. Off-policy and Offline RL methods have been proposed to reduce…

Machine Learning · Computer Science 2022-12-02 Wenqi Cui , Linbin Huang , Weiwei Yang , Baosen Zhang

The concept of the value-gradient is introduced and developed in the context of reinforcement learning. It is shown that by learning the value-gradients exploration or stochastic behaviour is no longer needed to find locally optimal…

Neural and Evolutionary Computing · Computer Science 2008-03-26 Michael Fairbank

Although recent model-free reinforcement learning algorithms have been shown to be capable of mastering complicated decision-making tasks, the sample complexity of these methods has remained a hurdle to utilizing them in many real-world…

Machine Learning · Computer Science 2020-04-21 Saeed Moazami , Peggy Doerschuk

Reward engineering and designing an incentive reward function are non-trivial tasks to train agents in complex environments. Furthermore, an inaccurate reward function may lead to a biased behaviour which is far from an efficient and…

Robotics · Computer Science 2021-05-04 Saeed Tafazzol , Erfan Fathi , Mahdi Rezaei , Ehsan Asali