Recommender systems have been pervasively applied as a technique of suggesting travel recommendations to tourists. Actually, recommendation significantly contribute the decision-making process A new approach in tourism industry by combination Artificial Bee Colony (ABC) algorithm and Fuzzy TOPSIS is proposed present paper. multi-criteria method called Techniques for Order Preference Similarity ...

We establish a duality theory for a broad class of deterministic inventory control problems on continuous spaces that includes the classical joint replenishment problem and inventory routing. Using this theory, we establish the existence of an optimal policy, which has been an open question. We show how a primal-dual pair of infinite dimensional linear programs encode both cyclic and non-cyclic...