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Deep active inference has been proposed as a scalable approach to perception and action that deals with large policy and state spaces. However, current models are limited to fully observable domains. In this paper, we describe a deep active…

Machine Learning · Computer Science 2021-02-08 Otto van der Himst , Pablo Lanillos

Recent research on vulnerabilities of deep reinforcement learning (RL) has shown that adversarial policies adopted by an adversary agent can influence a target RL agent (victim agent) to perform poorly in a multi-agent environment. In…

Machine Learning · Computer Science 2022-11-01 The Viet Bui , Tien Mai , Thanh H. Nguyen

In real-world multi-robot systems, performing high-quality, collaborative behaviors requires robots to asynchronously reason about high-level action selection at varying time durations. Macro-Action Decentralized Partially Observable Markov…

Machine Learning · Computer Science 2021-10-19 Yuchen Xiao , Joshua Hoffman , Christopher Amato

Reinforcement Learning can be applied to various tasks, and environments. Many of these environments have a similar shared structure, which can be exploited to improve RL performance on other tasks. Transfer learning can be used to take…

Machine Learning · Computer Science 2023-08-02 Ashrya Agrawal , Priyanshi Shah , Sourabh Prakash

Deep Reinforcement Learning uses a deep neural network to encode a policy, which achieves very good performance in a wide range of applications but is widely regarded as a black box model. A more interpretable alternative to deep networks…

Machine Learning · Computer Science 2022-09-09 Arne Gevaert , Jonathan Peck , Yvan Saeys

In most classical Autonomous Vehicle (AV) stacks, the prediction and planning layers are separated, limiting the planner to react to predictions that are not informed by the planned trajectory of the AV. This work presents a module that…

Robotics · Computer Science 2022-04-06 Jose L. Vazquez , Alexander Liniger , Wilko Schwarting , Daniela Rus , Luc Van Gool

Distributed Distributional DrQ is a model-free and off-policy RL algorithm for continuous control tasks based on the state and observation of the agent, which is an actor-critic method with the data-augmentation and the distributional…

Machine Learning · Computer Science 2024-04-17 Zehao Zhou

Deep Q Network (DQN) is a very successful algorithm, yet the inherent problem of reinforcement learning, i.e. the exploit-explore balance, remains. In this work, we introduce entropy regularization into DQN and propose SQN. We find that the…

Machine Learning · Computer Science 2020-12-15 Jingbin Liu , Shuai Liu , Xinyang Gu

Inferring other agents' mental states such as their knowledge, beliefs and intentions is thought to be essential for effective interactions with other agents. Recently, multiagent systems trained via deep reinforcement learning have been…

Artificial Intelligence · Computer Science 2018-05-22 Tambet Matiisen , Aqeel Labash , Daniel Majoral , Jaan Aru , Raul Vicente

Skilled robot task learning is best implemented by predictive action policies due to the inherent latency of sensorimotor processes. However, training such predictive policies is challenging as it involves finding a trajectory of motor…

Robotics · Computer Science 2017-03-03 Ali Ghadirzadeh , Atsuto Maki , Danica Kragic , Mårten Björkman

In this paper, we explore using deep reinforcement learning for problems with multiple agents. Most existing methods for deep multi-agent reinforcement learning consider only a small number of agents. When the number of agents increases,…

Machine Learning · Computer Science 2018-05-24 Arbaaz Khan , Clark Zhang , Daniel D. Lee , Vijay Kumar , Alejandro Ribeiro

Deep reinforcement learning has successfully been applied for molecular discovery as shown by the Molecule Deep Q-network (MolDQN) algorithm. This algorithm has challenges when applied to optimizing new molecules: training such a model is…

Machine Learning · Computer Science 2023-12-05 Huanyi Qin , Denis Akhiyarov , Sophie Loehle , Kenneth Chiu , Mauricio Araya-Polo

Effective offline RL methods require properly handling out-of-distribution actions. Implicit Q-learning (IQL) addresses this by training a Q-function using only dataset actions through a modified Bellman backup. However, it is unclear which…

Machine Learning · Computer Science 2023-05-23 Philippe Hansen-Estruch , Ilya Kostrikov , Michael Janner , Jakub Grudzien Kuba , Sergey Levine

The detection of anatomical landmarks is a vital step for medical image analysis and applications for diagnosis, interpretation and guidance. Manual annotation of landmarks is a tedious process that requires domain-specific expertise and…

Computer Vision and Pattern Recognition · Computer Science 2019-07-24 Athanasios Vlontzos , Amir Alansary , Konstantinos Kamnitsas , Daniel Rueckert , Bernhard Kainz

The beer game is a widely used in-class game that is played in supply chain management classes to demonstrate the bullwhip effect. The game is a decentralized, multi-agent, cooperative problem that can be modeled as a serial supply chain…

Machine Learning · Computer Science 2020-10-15 Afshin Oroojlooyjadid , MohammadReza Nazari , Lawrence Snyder , Martin Takáč

Model-based reinforcement learning uses models to plan, where the predictions and policies of an agent can be improved by using more computation without additional data from the environment, thereby improving sample efficiency. However,…

Machine Learning · Computer Science 2023-02-22 Animesh Kumar Paul , Videh Raj Nema

In human decision-making tasks, individuals learn through trials and prediction errors. When individuals learn the task, some are more influenced by good outcomes, while others weigh bad outcomes more heavily. Such confirmation bias can…

Machine Learning · Computer Science 2024-08-09 Jiacheng Shen , Lihan Feng

Dialogue policy learning based on reinforcement learning is difficult to be applied to real users to train dialogue agents from scratch because of the high cost. User simulators, which choose random user goals for the dialogue agent to…

Computation and Language · Computer Science 2020-12-29 Yangyang Zhao , Zhenyu Wang , Zhenhua Huang

We propose Deep Q-Networks (DQN) with model-based exploration, an algorithm combining both model-free and model-based approaches that explores better and learns environments with sparse rewards more efficiently. DQN is a general-purpose,…

Machine Learning · Computer Science 2019-03-25 Stephen Zhen Gou , Yuyang Liu

Autonomous and learning systems based on Deep Reinforcement Learning have firmly established themselves as a foundation for approaches to creating resilient and efficient Cyber-Physical Energy Systems. However, most current approaches…

Artificial Intelligence · Computer Science 2024-04-03 Eric MSP Veith , Torben Logemann , Aleksandr Berezin , Arlena Wellßow , Stephan Balduin