Core Concepts
ROMA-iQSS enables decentralized agents to independently identify optimal objectives and align their efforts towards a common goal through a combination of state-based value learning and a specialized multi-agent interaction protocol.
Abstract
The article introduces a framework called ROMA-iQSS that addresses two key challenges in multi-agent collaboration: 1) autonomously identifying optimal objectives for collective outcomes, and 2) aligning these objectives among agents.
The framework consists of two main components:
Independent QSS (iQSS) learning: A decentralized state-based value learning algorithm that enables agents to independently discover optimal states.
Round-Robin Multi-Agent (ROMA) interaction: A novel mechanism for multi-agent interaction, where less proficient agents follow and adopt policies from more experienced ones, thereby indirectly guiding their learning process.
The theoretical analysis shows that ROMA-iQSS leads decentralized agents to an optimal collective policy. Empirical experiments demonstrate that ROMA-iQSS outperforms existing decentralized state-based and action-based value learning strategies by effectively identifying and aligning optimal objectives.
The key highlights and insights are:
Traditional centralized learning approaches struggle with scalability and efficiency in large multi-agent systems.
Decentralized learning paradigms, such as independent Q-learning, face challenges in agents' understanding of their peers and their ability to interpret the environment effectively, leading to a lack of alignment in agents' objectives.
ROMA-iQSS combines independent state-based value learning (iQSS) and a specialized multi-agent interaction protocol (ROMA) to enable agents to pinpoint optimal states and synchronize their objectives.
Theoretical analysis shows that iQSS helps agents converge on effective policies for optimal states, while ROMA coordinates their efforts to a common goal.
Empirical studies on multi-stage coordination tasks demonstrate ROMA-iQSS's superiority over existing state-of-the-art methods in identifying optimal objectives and ensuring goal alignment among agents.
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