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• W3100278515 abstract "In the automation of many kinds of processes, the observable outcome can often be described as the combined effect of an entire sequence of actions, or controls, applied throughout the process execution. In these cases, strategies to optimise control policies for individual stages of the process are not applicable, and instead the whole policy needs to be optimised at once. On the other hand, the cost to evaluate the policy's performance might also be high, being desirable that a solution can be found with as few interactions as possible with the real system. We consider the problem of optimising control policies to allow a robot to complete a given race track within a minimum amount of time. We assume that the robot has no prior information about the track or its own dynamical model, just an initial valid driving example. Localisation is only applied to monitor the robot and to provide an indication of its position along the track's centre axis. With that in mind, we propose a method for finding a policy that minimises the time per lap while keeping the vehicle on the track using a Bayesian optimisation (BO) approach over a reproducing kernel Hilbert space. We apply an algorithm to search more efficiently over high-dimensional policy-parameter spaces with BO, by iterating over each dimension individually, in a sequential coordinate descent-like scheme. Experiments demonstrate the performance of the algorithm against other methods in a simulated car racing environment." @default.
• W3100278515 created "2020-11-23" @default.
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• W3100278515 date "2018-05-01" @default.
• W3100278515 modified "2023-09-27" @default.
• W3100278515 title "Learning to Race Through Coordinate Descent Bayesian Optimisation" @default.
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• W3100278515 doi "https://doi.org/10.1109/icra.2018.8460735" @default.
• W3100278515 hasPublicationYear "2018" @default.
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