# Peter Stone's Selected Publications

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## Traffic Optimization For a Mixture of Self-interested and Compliant Agents

Traffic Optimization For a Mixture of Self-interested and Compliant Agents.
Guni Sharon, Michael Albert, Tarun Rambha, Stephen Boyles, and Peter Stone.
In Proceedings of the 32nd AAAI Conference on Artificial Intelligence (AAAI-18), February 2018.

### Abstract

This paper focuses on two commonly used path assignment policies for agents traversing a congested network: self-interested routing, and system-optimum routing. In the self-interested routing policy each agent selects a path that optimizes its own utility, while in the system-optimum routing, agents are assigned paths with the goal of maximizing system performance. This paper considers a scenario where a centralized network manager wishes to optimize utilities over all agents, i.e., implement a system-optimum routing policy. In many real-life scenarios, however, the system manager is unable to influence the route assignment of all agents due to limited influence on route choice decisions. Motivated by such scenarios, a computationally tractable method is presented that computes the minimal amount of agents that the system manager needs to influence (compliant agents) in order to achieve system optimal performance. Moreover, this methodology can also determine whether a given set of compliant agents is sufficient to achieve system optimum and compute the optimal route assignment for the compliant agents to do so. Experimental results are presented showing that in several large-scale, realistic traffic networks optimal flow can be achieved with as low as 13\% of the agent being compliant and up to 54\%.

### BibTeX Entry

@InProceedings{AAAI18-Sharon,
author = {Guni Sharon and Michael Albert and Tarun Rambha and Stephen Boyles and Peter Stone},
title = {Traffic Optimization For a Mixture of Self-interested and Compliant Agents},
booktitle = {Proceedings of the 32nd AAAI Conference on Artificial Intelligence (AAAI-18)},
location = {New Orleans, Lousiana, USA},
month = {February},
year = {2018},
abstract = {
This paper focuses on two commonly used path assignment policies for
agents traversing a congested network: \textit{self-interested routing},
and \textit{system-optimum routing}. In the self-interested routing policy
each agent selects a path that optimizes its own utility, while in the
system-optimum routing, agents are assigned paths with the goal of
maximizing system performance. This paper considers a scenario where a
centralized network manager wishes to optimize utilities over all
agents, i.e., implement a system-optimum routing policy. In many
real-life scenarios, however, the system manager is unable to influence
the route assignment of all agents due to limited influence on route
choice decisions. Motivated by such scenarios, a computationally
tractable method is presented that computes the minimal amount of agents
that the system manager needs to influence (compliant agents) in order
to achieve system optimal performance. Moreover, this methodology can
also determine whether a given set of compliant agents is sufficient to
achieve system optimum and compute the optimal route assignment for the
compliant agents to do so. Experimental results are presented showing
that in several large-scale, realistic traffic networks optimal flow can
be achieved with as low as 13\% of the agent being compliant and up to
54\%.},
}


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