%0 Journal Article %T A Lagrange Relaxation Based Approach to Solve a Discrete-Continous Bi-Level Model %A Zaida E. Alarc¨®n-Bernal %A Ricardo Aceves-Garc¨ªa %J Open Journal of Optimization %P 100-111 %@ 2325-7091 %D 2019 %I Scientific Research Publishing %R 10.4236/ojop.2019.83009 %X In this work we propose a solution method based on Lagrange relaxation for discrete-continuous bi-level problems, with binary variables in the leading problem, considering the optimistic approach in bi-level programming. For the application of the method, the two-level problem is reformulated using the Karush-Kuhn-Tucker conditions. The resulting model is linearized taking advantage of the structure of the leading problem. Using a Lagrange relaxation algorithm, it is possible to find a global solution efficiently. The algorithm was tested to show how it performs. %K Bi-Level Programming %K Lagrange Relaxation %K Discrete-Continous Linear Bilevel %U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=95334