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# The Conclusion

The paper proposes the GA of the BLPP of which the optimal solution of the lower-level problem is dependent on the upper-level problem. The numerical results show the method is feasible and efficient. Compared with the traditional methods, the method has the following characters:

1.

The method has no special requirement for the characters of the function and overcome the difficulty discussing the conditions and the algorithms of the optimal solution with the definition of the differentiability of the function.

2.

This GA avoids the use of penalty function to deal with the constraints, by changing the randomly generated initial population into an initial population satisfying the constraints in order to improve the ability of the GA to deal with the constraints.

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