Figure 7. Median normalized Hamming distances.

Degree of agent dissimilarity between all pairs of agents before (initial) and after (final) 100 trial steps for landscapes including (A) 0, (B) 495, or (D) 2475 two-feature interaction terms, averaged over 50 random landscapes for each parameter combination (error bars represent plus or minus one standard deviation), shown as a function of the number of patients N_p treated by each agent during each trial step. RCT refers to a search strategy modeled after Randomized Controlled Trials; QIC refers to a search strategy modeled after Quality Improvement Collaboratives. Scat refers to a scattered initial distribution of agents, Clus refers to a clustered initial distribution of agents. N_p is the number of patients per agent per trial step.