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In Blazewich et al. (4OR-Q J Oper Res 12(1):35–48, 2014), an Internet shopping problem with price-sensitive discounts was introduced, in which a customer wants to buy a given set of products in a given set of Internet shops. This problem is an extension of the original Internet shopping optimization problem (ISOP) presented in Blazewich et al. (Int J Appl Math Comput Sci 20(2):385–390, 2010). For...
Robust combinatorial optimization problems with cardinality constrained uncertainty may be solved by a finite number of nominal problems. In this paper, we show that the number of nominal problems to be solved can be reduced significantly.
The newsvendor problem with pricing is an important tool that provides the relationship between the operational and marketing issues at the firm’s level. This paper investigates the use of the distribution free approach to solve the standard newsvendor problem with pricing and its extension to the holding and shortage cost case. The approach is vital for the situations in which a firm may be missing...
This paper presents a multi-objective linear integer program that assigns student volunteers to present lectures at participating classes in local schools. A student’s class assignment is based upon his or her availability to teach at that time as well as several additional factors including student preferences regarding commuting and partners as well as the institution’s goal of creating diverse...
Simulation optimization refers to the optimization of an objective function subject to constraints, both of which can be evaluated through a stochastic simulation. To address specific features of a particular simulation—discrete or continuous decisions, expensive or cheap simulations, single or multiple outputs, homogeneous or heterogeneous noise—various algorithms have been proposed in the literature...
This article develops simple and easy-to-use approximation formulae for the length of a Chinese Postman Problem (CPP) optimal tour on directed and undirected strongly connected planar graphs as a function of the number of nodes and the number of arcs for graphs whose nodes are randomly distributed on a unit square area. These approximations, obtained from a multi-linear regression analysis, allow...
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