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The performance of off-policy learning, including deep Q-learning and deep deterministic policy gradient (DDPG), critically depends on the choice of the exploration policy. Existing exploration methods are mostly based on adding noise to…

机器学习 · 计算机科学 2018-03-28 Tianbing Xu , Qiang Liu , Liang Zhao , Jian Peng

Deep reinforcement learning has obtained significant breakthroughs in recent years. Most methods in deep-RL achieve good results via the maximization of the reward signal provided by the environment, typically in the form of discounted…

机器学习 · 计算机科学 2018-09-10 Yubin Deng , Ke Yu , Dahua Lin , Xiaoou Tang , Chen Change Loy

Exploration is a crucial and distinctive aspect of reinforcement learning (RL) that remains a fundamental open problem. Several methods have been proposed to tackle this challenge. Commonly used methods inject random noise directly into the…

机器学习 · 计算机科学 2024-11-06 Sebastian Griesbach , Carlo D'Eramo

The class of deep deterministic off-policy algorithms is effectively applied to solve challenging continuous control problems. Current approaches commonly utilize random noise as an exploration method, which has several drawbacks, including…

机器学习 · 计算机科学 2024-05-07 Igor Kuznetsov

Efficient exploration remains a challenging research problem in reinforcement learning, especially when an environment contains large state spaces, deceptive local optima, or sparse rewards. To tackle this problem, we present a…

人工智能 · 计算机科学 2018-10-30 Zhang-Wei Hong , Tzu-Yun Shann , Shih-Yang Su , Yi-Hsiang Chang , Chun-Yi Lee

In Reinforcement Learning, agents learn policies by exploring and interacting with the environment. Due to the curse of dimensionality, learning policies that map high-dimensional sensory input to motor output is particularly challenging.…

机器人学 · 计算机科学 2023-10-31 Alberto Silvio Chiappa , Alessandro Marin Vargas , Ann Zixiang Huang , Alexander Mathis

Reinforcement learning agents need exploratory behaviors to escape from local optima. These behaviors may include both immediate dithering perturbation and temporally consistent exploration. To achieve these, a stochastic policy model that…

机器学习 · 计算机科学 2018-12-27 Sirui Xie , Junning Huang , Lanxin Lei , Chunxiao Liu , Zheng Ma , Wei Zhang , Liang Lin

As deep reinforcement learning driven by visual perception becomes more widely used there is a growing need to better understand and probe the learned agents. Understanding the decision making process and its relationship to visual inputs…

计算机视觉与模式识别 · 计算机科学 2019-04-03 Christian Rupprecht , Cyril Ibrahim , Christopher J. Pal

On-policy reinforcement learning (RL) algorithms have demonstrated great potential in robotic control, where effective exploration is crucial for efficient and high-quality policy learning. However, how to encourage the agent to explore the…

机器人学 · 计算机科学 2026-04-02 Leixin Chang , Xinchen Yao , Ben Liu , Liangjing Yang , Hua Chen

An agent learning through interactions should balance its action selection process between probing the environment to discover new rewards and using the information acquired in the past to adopt useful behaviour. This trade-off is usually…

机器学习 · 计算机科学 2019-07-02 Lucas Beyer , Damien Vincent , Olivier Teboul , Sylvain Gelly , Matthieu Geist , Olivier Pietquin

Despite advancements in deep reinforcement learning algorithms, developing an effective exploration strategy is still an open problem. Most existing exploration strategies either are based on simple heuristics, or require the model of the…

机器学习 · 计算机科学 2021-02-11 Arash Mahyari

Reinforcement learning (RL) agents improve through trial-and-error, but when reward is sparse and the agent cannot discover successful action sequences, learning stagnates. This has been a notable problem in training deep RL agents to…

人工智能 · 计算机科学 2018-02-27 Evan Zheran Liu , Kelvin Guu , Panupong Pasupat , Tianlin Shi , Percy Liang

Recent advancements in agentic test-time scaling allow models to gather environmental feedback before committing to final actions. A key limitation of existing methods is that they typically employ undifferentiated exploration strategies,…

人工智能 · 计算机科学 2026-05-13 Xingyuan Hua , Sheng Yue , Ju Ren

We propose an approach to learning agents for active robotic mapping, where the goal is to map the environment as quickly as possible. The agent learns to map efficiently in simulated environments by receiving rewards corresponding to how…

机器人学 · 计算机科学 2018-01-01 Shane Barratt

We propose a new method to study the internal memory used by reinforcement learning policies. We estimate the amount of relevant past information by estimating mutual information between behavior histories and the current action of an…

人工智能 · 计算机科学 2016-11-22 Christoph Dann , Katja Hofmann , Sebastian Nowozin

Reinforcement Learning (RL) has made remarkable achievements, but it still suffers from inadequate exploration strategies, sparse reward signals, and deceptive reward functions. To alleviate these problems, a Population-guided Novelty…

机器学习 · 计算机科学 2021-10-12 Qihao Liu , Yujia Wang , Xiaofeng Liu

Humans integrate multiple sensory modalities (e.g. visual and audio) to build a causal understanding of the physical world. In this work, we propose a novel type of intrinsic motivation for Reinforcement Learning (RL) that encourages the…

计算机视觉与模式识别 · 计算机科学 2020-07-28 Chuang Gan , Xiaoyu Chen , Phillip Isola , Antonio Torralba , Joshua B. Tenenbaum

Deep reinforcement learning (DRL) faces significant challenges in addressing the hard-exploration problems in tasks with sparse or deceptive rewards and large state spaces. These challenges severely limit the practical application of DRL.…

机器学习 · 计算机科学 2024-01-03 Guojian Wang , Faguo Wu , Xiao Zhang , Ning Guo , Zhiming Zheng

Sequential decision-making agents struggle with long horizon tasks, since solving them requires multi-step reasoning. Most reinforcement learning (RL) algorithms address this challenge by improved credit assignment, introducing memory…

机器学习 · 计算机科学 2023-04-04 Bogdan Mazoure , Jake Bruce , Doina Precup , Rob Fergus , Ankit Anand

Multi-agent reinforcement learning systems aim to provide interacting agents with the ability to collaboratively learn and adapt to the behaviour of other agents. In many real-world applications, the agents can only acquire a partial view…

机器学习 · 计算机科学 2018-12-04 Ozsel Kilinc , Giovanni Montana