11. When modeling smaller networks the objective function can be changed accordingly. 12. The features and costs often come directly from the objective function . 13. :" For almost all objective functions , specialization is essentially accidental ." 14. This means that an objective function to be maximised is specified. 15. Incompressible, or Kolmogorov random, objective functions have no regularity for an algorithm to exploit. 16. Theorem 2 establishes a " more subtle " NFL result for time-varying objective functions . 17. A search algorithm takes an objective function as input and evaluates candidate solutions one-by-one. 18. To do this, the expectation maximization algorithm is used, with the following objective function : 19. In that case it is useful to optimize a regularized objective function such as 20. In this case, the metabolic system was optimized to maximize the biomass objective function .