Fig. 3

Score of the quality of the policy by number of states. Figure 3 shows the score of the quality of the policy by the number of states. The quality of the policy is defined by \(\mbox{{Score}}= \frac {n}{N}\). With n as the average number of times the wizard followed the agent’s recommendations per dialogue and N the as average of recommendations received per dialogue. The score of the quality of the policy varies between 0 and 1. For the novice agent, the quality of the policy is equivalent to 0.66 and is poor compared to the intermediate agent (0.875) and the advanced agent (1)