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. 2009 Apr 10;5(4):e1000355. doi: 10.1371/journal.pcbi.1000355

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Kashtan et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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(A) Speedup as a function of goal switching times E. Speedup is presented for the goal G₁ with MVG between the nearly modular pair of goals G₁ and G₂ : G₁ = { [ (−0.4,−1.6,0.7), (−0.4,−1,−2.3) ]; [ (0,0.9,−0.3), (0,0.7,1.2) ] }, G₂ = { [ (2,−1.9,1.7), (2.9,−0.3,−3.6) ];[ (0.3,0.3,0.3), (0.4,0.6,−0.1) ] }, . High speedup S is found for a wide range of goal switching times. (B) Speedup under MVG is greater the harder the goal (the more time it takes to solve the goal in FG evolution starting from random initial conditions). The Speedup S = T_FG / T_MVG as a function of goal complexity, defined as the time to solve the goal under fixed goal evolution, T_FG. The speedup scales linearly with T_FG. Goals are as in (a). and E = 10/r.

Inline graphic — (A) Speedup as a function of goal switching times E. Speedup is presented for the goal G₁ with MVG between the nearly modular pair of goals G₁ and G₂ : G₁ = { [ (−0.4,−1.6,0.7), (−0.4,−1,−2.3) ]; [ (0,0.9,−0.3), (0,0.7,1.2) ] }, G₂ = { [ (2,−1.9,1.7), (2.9,−0.3,−3.6) ];[ (0.3,0.3,0.3), (0.4,0.6,−0.1) ] }, . High speedup S is found for a wide range of goal switching times. (B) Speedup under MVG is greater the harder the goal (the more time it takes to solve the goal in FG evolution starting from random initial conditions). The Speedup S = T_FG / T_MVG as a function of goal complexity, defined as the time to solve the goal under fixed goal evolution, T_FG. The speedup scales linearly with T_FG. Goals are as in (a). and E = 10/r.