The optimal communication spanning tree (OCST) problemis a well known NP-hard combinatorial optimizationproblem which seeks a spanning tree that satisfies all givencommunication requirements for minimal total costs. Ithas been shown that optimal solutions of OCST problemsare biased towards the...

In the car-rental industry, it is generally assumed that a 1% increase in price contributes an 8% profit increment. Therefore, pricing is of priority concern in revenue management. Accurately forecasting monthly revenue per unit (RPU) (per car) has received increasing attention owing to its...