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Dynamic Weights and Prior Reward in Policy Fusion for Compound Agent Learning

Authors:

Jianping WangAuthors Info & Claims

ACM Transactions on Intelligent Systems and Technology, Volume 14, Issue 6

Article No.: 107, Pages 1 - 28

https://doi.org/10.1145/3623405

Published: 14 November 2023 Publication History

Abstract

In Deep Reinforcement Learning (DRL) domain, a compound learning task is often decomposed into several sub-tasks in a divide-and-conquer manner, each trained separately and then fused concurrently to achieve the original task, referred to as policy fusion. However, the state-of-the-art (SOTA) policy fusion methods treat the importance of sub-tasks equally throughout the task process, eliminating the possibility of the agent relying on different sub-tasks at various stages. To address this limitation, we propose a generic policy fusion approach, referred to as Policy Fusion Learning with Dynamic Weights and Prior Reward (PFLDWPR), to automate the time-varying selection of sub-tasks. Specifically, PFLDWPR produces a time-varying one-hot vector for sub-tasks to dynamically select a suitable sub-task and mask the rest throughout the entire task process, enabling the fused strategy to optimally guide the agent in executing the compound task. The sub-tasks with the dynamic one-hot vector are then aggregated to obtain the action policy for the original task. Moreover, we collect sub-tasks’s rewards at the pre-training stage as a prior reward, which, along with the current reward, is used to train the policy fusion network. Thus, this approach reduces fusion bias by leveraging prior experience. Experimental results under three popular learning tasks demonstrate that the proposed method significantly improves three SOTA policy fusion methods in terms of task duration, episode reward, and score difference.

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Cited By

Xu MChen XShe YJin YZhao GWang J(2024)Strengthening Cooperative Consensus in Multi-Robot ConfrontationACM Transactions on Intelligent Systems and Technology10.1145/363937115:2(1-27)Online publication date: 22-Feb-2024
https://dl.acm.org/doi/10.1145/3639371
Ye SLu J(undefined)Robust Recommender Systems with Rating Flip NoiseACM Transactions on Intelligent Systems and Technology10.1145/3641285
https://dl.acm.org/doi/10.1145/3641285

Index Terms

Dynamic Weights and Prior Reward in Policy Fusion for Compound Agent Learning
1. Computing methodologies

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Published In

cover image ACM Transactions on Intelligent Systems and Technology

ACM Transactions on Intelligent Systems and Technology Volume 14, Issue 6

December 2023

493 pages

ISSN:2157-6904

EISSN:2157-6912

DOI:10.1145/3632517

Editor:
Huan Liu
Arizona State University, USA

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Publication History

Published: 14 November 2023

Online AM: 11 September 2023

Accepted: 25 August 2023

Revised: 07 August 2023

Received: 25 May 2023

Published in TIST Volume 14, Issue 6

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Cited By

Xu MChen XShe YJin YZhao GWang J(2024)Strengthening Cooperative Consensus in Multi-Robot ConfrontationACM Transactions on Intelligent Systems and Technology10.1145/363937115:2(1-27)Online publication date: 22-Feb-2024
https://dl.acm.org/doi/10.1145/3639371
Ye SLu J(undefined)Robust Recommender Systems with Rating Flip NoiseACM Transactions on Intelligent Systems and Technology10.1145/3641285
https://dl.acm.org/doi/10.1145/3641285

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