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. 2015 Aug 26;9:225. doi: 10.3389/fnbeh.2015.00225

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Copyright © 2015 Viejo, Khamassi, Brovelli and Girard.

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) or licensor 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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Average contribution at each representative steps of the goal-directed and habitual strategy for each model from the set of best model. (A–C) For each model, the contribution is evaluated by removing Q-values from one strategy and comparing the resulting entropy H of probability of action. The green triangle line is the final entropy from the dual-strategy with BWM only. The yellow star line is the final entropy from the dual-strategy with Q-L only. Also plotted with circles is the final entropy of the full model (i.e., BWM+Q-L). (D) The weight from the Weight-based mixture model that shows the reliability of BWM over QL. (E) The speed-accuracy trade-off of the VPI-based selection shows a switch of strategy around trial 8.