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Long-Term Resource Allocation Fairness in Average Markov Decision Process (AMDP) Environment
, V. Nair, V. Patil, Y. Zhou
Published in International Foundation for Autonomous Agents and Multiagent Systems (IFAAMAS)
2022
Volume: 1
   
Pages: 525 - 533
Abstract
Fairness has emerged as an important concern in automated decision-making in recent years, especially when these decisions affect human welfare. In this work, we study fairness in temporally extended decision-making settings, specifically those formulated as Markov Decision Processes (MDPs). Our proposed notion of fairness ensures that each state's long-term visitation frequency is at least a specified fraction. This quota-based notion of fairness is natural in many resource-allocation settings where the dynamics of a single resource being allocated is governed by an MDP and the distribution of the shared resource is captured by its state-visitation frequency. In an average-reward MDP (AMDP) setting, we formulate the problem as a bilinear saddle point program and, for a generative model, solve it using a Stochastic Mirror Descent (SMD) based algorithm. The proposed solution guarantees a simultaneous approximation on the expected average-reward and fairness requirement. We give sample complexity bounds for the proposed algorithm and validate our theoretical results with experiments on simulated data. © 2022 International Foundation for Autonomous Agents and Multiagent Systems (www.ifaamas.org). All rights reserved
About the journal
JournalProceedings of the International Joint Conference on Autonomous Agents and Multiagent Systems, AAMAS
PublisherInternational Foundation for Autonomous Agents and Multiagent Systems (IFAAMAS)
ISSN15488403