Supervised learning from human performance at the computationally hard problem of optimal traffic signal control on a network of junctions.

Abstract:

:Optimal switching of traffic lights on a network of junctions is a computationally intractable problem. In this research, road traffic networks containing signallized junctions are simulated. A computer game interface is used to enable a human 'player' to control the traffic light settings on the junctions within the simulation. A supervised learning approach, based on simple neural network classifiers can be used to capture human player's strategies in the game and thus develop a human-trained machine control (HuTMaC) system that approaches human levels of performance. Experiments conducted within the simulation compare the performance of HuTMaC to two well-established traffic-responsive control systems that are widely deployed in the developed world and also to a temporal difference learning-based control method. In all experiments, HuTMaC outperforms the other control methods in terms of average delay and variance over delay. The conclusion is that these results add weight to the suggestion that HuTMaC may be a viable alternative, or supplemental method, to approximate optimization for some practical engineering control problems where the optimal strategy is computationally intractable.

journal_name

R Soc Open Sci

authors

Box S

doi

10.1098/rsos.140211

subject

Has Abstract

pub_date

2014-12-24 00:00:00

pages

140211

issue

4

issn

2054-5703

pii

rsos140211

journal_volume

1

pub_type

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