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Designing and solving open vehicle routing proble
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&Traffic management is one of the most popular majors in different scientific fields, such as operations research, industrial engineering, civil engineering, health care management, etc. The main objective & quot; is to minimize the total transportation cost & quot; between suppliers and clients in a way that must meet the needs of each customer. When the & quot; transportation problem & quot; attempts to generate a journey or a set of sub journeys to optimize some objectives, it is called the & quot; Routing Problem & quot;. The routing problem consists of five parts: network, demand, fleet, cost and objectives. One of the most famous examples & quot; Routing Problem & quot; is & quot; Traveling Salesman Problem & quot; referred to as & quot; TSP Problem & quot;. Sometimes more than a server (such as a car), then & quot; teaspoon & quot; is converted to a new problem called & quot; Vehicle Routing Problem & quot; or & quot; vehicle & quot;. This is one of the most challenging issues in the area of & quot; optimal portfolio & quot. &A very simple definition of vehicle & quot; is to give the vehicle that the customer must satisfy, which is located in the central warehouse of the fleet's known demand set & quot;. In some distributed systems, there is no need to return to the factory to repair the vehicle. The most recent problem is called & quot; Open Vehicle Routing Problem & quot; or & quot; OVRP & quot;. Since the real world situation forces companies to use multiple repositories to manage their distribution system, here it is considered multi depot. As for the complexity of this problem, the traditional optimization method will not be useful in medium to large scale. Therefore, this paper introduces two new meta heuristics hybrid variable neighborhood search (hvns) and parallel simulation of production (PSA) respectively. The model and algorithm proposed in this paper are studied. The largest author of this paper is primarily with multiple repositories of first OVRP knowledge. Another contribution of this paper is to apply Miller Tucker zemillin Sub-tourism to remove constraints;.
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