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Join order selection is a sub-field of query optimization that aims to find the optimal join order for an SQL query with the minimum cost. The challenge lies in the exponentially growing search space as the number of tables increases,…

Databases · Computer Science 2024-12-16 Chang Liu , Amin Kamali , Verena Kantere , Calisto Zuzarte , Vincent Corvinelli

In this paper, a deep reinforcement learning (DRL) method is proposed to address the problem of UAV navigation in an unknown environment. However, DRL algorithms are limited by the data efficiency problem as they typically require a huge…

Robotics · Computer Science 2020-08-07 Lei He , Nabil Aouf , James F. Whidborne , Bifeng Song

Deep Reinforcement Learning (DRL) is widely used in task-oriented dialogue systems to optimize dialogue policy, but it struggles to balance exploration and exploitation due to the high dimensionality of state and action spaces. This…

Computation and Language · Computer Science 2025-06-06 Yangyang Zhao , Ben Niu , Libo Qin , Shihan Wang

Recent deep reinforcement learning (DRL) successes rely on end-to-end learning from fixed-size observational inputs (e.g. image, state-variables). However, many challenging and interesting problems in decision making involve observations or…

Machine Learning · Computer Science 2022-06-08 Vince Jankovics , Michael Garcia Ortiz , Eduardo Alonso

Reinforcement learning (RL) is a powerful approach to enhance task-oriented dialogue (TOD) systems. However, existing RL methods tend to mainly focus on generation tasks, such as dialogue policy learning (DPL) or response generation (RG),…

Artificial Intelligence · Computer Science 2024-06-21 Huifang Du , Shuqin Li , Minghao Wu , Xuejing Feng , Yuan-Fang Li , Haofen Wang

Deep reinforcement learning (DRL) has made great achievements since proposed. Generally, DRL agents receive high-dimensional inputs at each step, and make actions according to deep-neural-network-based policies. This learning mechanism…

Multiagent Systems · Computer Science 2019-12-30 Kun Shao , Zhentao Tang , Yuanheng Zhu , Nannan Li , Dongbin Zhao

Deep reinforcement learning (DRL) agents are trained through trial-and-error interactions with the environment. This leads to a long training time for dense neural networks to achieve good performance. Hence, prohibitive computation and…

Machine Learning · Computer Science 2022-05-09 Ghada Sokar , Elena Mocanu , Decebal Constantin Mocanu , Mykola Pechenizkiy , Peter Stone

Dynamic difficulty adjustment ($DDA$) is a process of automatically changing a game difficulty for the optimization of user experience. It is a vital part of almost any modern game. Most existing DDA approaches concentrate on the experience…

Machine Learning · Computer Science 2021-06-08 Dvir Ben Or , Michael Kolomenkin , Gil Shabat

Although Deep Neural Networks(DNNs) have achieved successful applications in many fields, they are vulnerable to adversarial examples.Adversarial training is one of the most effective methods to improve the robustness of DNNs, and it is…

Machine Learning · Computer Science 2020-03-26 Ya-guan Qian , Xi-Ming Zhang , Wassim Swaileh , Li Wei , Bin Wang , Jian-Hai Chen , Wu-Jie Zhou , Jing-Sheng Lei

Reinforcement Learning (RL) enables an intelligent agent to optimise its performance in a task by continuously taking action from an observed state and receiving a feedback from the environment in form of rewards. RL typically uses tables…

Artificial Intelligence · Computer Science 2025-01-28 Alberto Castagna

Adaptive impedance matching between antennas and radio frequency front-end modules is critical for maximizing power transmission efficiency in mobile communication systems. Conventional numerical and analytical methods struggle with a…

Signal Processing · Electrical Eng. & Systems 2026-04-10 Guoquan Zhang , Wendong Cheng , Weidong Wang , Li Chen

Recent advancements in Deep Reinforcement Learning (DRL) have demonstrated its applicability across various domains, including robotics, healthcare, energy optimization, and autonomous driving. However, a critical question remains: How…

Machine Learning · Computer Science 2025-07-24 Adithya Mohan , Dominik Rößle , Daniel Cremers , Torsten Schön

We present an approach using deep reinforcement learning (DRL) to directly generate motion matching queries for long-term tasks, particularly targeting the reaching of specific locations. By integrating motion matching and DRL, our method…

Graphics · Computer Science 2024-03-26 Jeongmin Lee , Taesoo Kwon , Hyunju Shin , Yoonsang Lee

Meta Reinforcement Learning (MRL) enables an agent to learn from a limited number of past trajectories and extrapolate to a new task. In this paper, we attempt to improve the robustness of MRL. We build upon model-agnostic meta-learning…

Machine Learning · Computer Science 2021-04-28 Shiqi Chen , Zhengyu Chen , Donglin Wang

Deep reinforcement learning (DRL) finds extensive application in autonomous drone navigation within complex, high-risk environments. However, its practical deployment faces a safety-exploration dilemma: soft penalty mechanisms encourage…

Robotics · Computer Science 2026-05-04 Wentao Chen , Jingtang Chen , Mingjian Fu , Tiantian Li , Youfeng Su , Wenxi Liu , Yuanlong Yu

Deep reinforcement learning (DRL) has become a powerful tool for complex decision-making in machine learning and AI. However, traditional methods often assume perfect action execution, overlooking the uncertainties and deviations between an…

Robotics · Computer Science 2025-07-02 Oren Fivel , Matan Rudman , Kobi Cohen

Can an agent learn efficiently in a noisy and self adapting environment with sequential, non-stationary and non-homogeneous observations? Through trading bots, we illustrate how Deep Reinforcement Learning (DRL) can tackle this challenge.…

Machine Learning · Computer Science 2020-10-19 Eric Benhamou , David Saltiel , Sandrine Ungari , Abhishek Mukhopadhyay , Jamal Atif

This paper focuses on the impact of leveraging autonomous offensive approaches in Deep Reinforcement Learning (DRL) to train more robust agents by exploring the impact of applying adversarial learning to DRL for autonomous security in…

Cryptography and Security · Computer Science 2023-08-15 Luke Borchjes , Clement Nyirenda , Louise Leenen

Adversarial attacks and robustness in Deep Reinforcement Learning (DRL) have been widely studied in various threat models; however, few consider environmental state perturbations, which are natural in embodied scenarios. To improve the…

Machine Learning · Computer Science 2025-06-11 Chenxu Wang , Huaping Liu

A method using deep reinforcement learning (DRL) to non-iteratively generate an optimal mesh for an arbitrary blade passage is developed. Despite automation in mesh generation using either an empirical approach or an optimization algorithm,…

Machine Learning · Computer Science 2023-05-11 Innyoung Kim , Sejin Kim , Donghyun You