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The energy portfolio and production planning problem for multiple companies under energy constraints is formulated as a mixed integer nonlinear programming problem. A new Lagrangian decomposition and coordination approach is proposed to solve the problem effectively. In this paper, we propose efficient computation algorithms for lower bound and upper bound. The lower bound is computed by relaxing...
Quantity discount is the decision making of the tradeoff price between suppliers and manufacturers while the production is changeable due to the unknown demand in the real market. In this paper, supply chain optimization model under demand uncertainty with all-unit discount policy which considers the selection of the contracted suppliers, production quantity and inventory simultaneously is addressed...
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