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. 2020 Apr 3;7:42. doi: 10.3389/frobt.2020.00042

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Copyright © 2020 Hangl, Dunjko, Briegel and Piater.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Evolution of the simulated success rates over the number of rollouts for different numbers of preparatory behaviors with different values for the boredom affinity β parameter. For each curve from left to right, five behaviors are added. The red horizontal lines denote an average success rate of 90%. The selected parameter values were β ∈ {0.1, 0.3, 0.5, 0.8, 1.0}. The graph for β = 1.0 is shown in Figure 7B. Increase of affinity yields a significant increase of the learning speed proportional to β. (A) Experiment with boredom affinity β = 0.1. (B) Experiment with boredom affinity β = 0.3. (C) Experiment with boredom affinity β = 0.5. (D) Experiment with boredom affinity β = 0.8.