نتایج جستجو برای: stochastic demand

تعداد نتایج: 268185  

Journal: :Transportation Research Part E-logistics and Transportation Review 2021

Immediately after a disruption, in order to minimize the negative impact inflicted on society, its imperative re-establish interdicted critical services enabled by infrastructure networks. In this paper, we study stochastic network recovery problem that tackles planning of restoration activities (considering limited resources) links so pre-disruption service flows can be re-established as quick...

Ardavan Babaei, Kamran Shahanaghi

The life of many people in the world is under the danger because of the accidents and unpredicted diseases, which require relief. Since, most of such cases occur in unpredictable condition, for an appropriate planning, the uncertain conditions should be investigated. Consequently, this paper investigates the integrated and multi-step process of locating, assigning and routing the air and la...

In this article, we integrate production and maintenance to two stage lot sizing models with a central warehouse and a manufacturer by adding a new constraint in which the demand is depend on the average percent of product shortage. The central warehouse faces stochastic demand and is controlled by continuous review (R,Q) policy. Additionally, Warehouse ordering cost can be reduced through furt...

2009
Marek Zima

Stochastic programming is an optimization approach taking into account uncertainties in the system model. There are numerous possible applications of stochastic programming. The purpose of this short report is to introduce stochastic programming in simple, tutorial-like, terms. A simple example of an optimization of a covering gas demand is provided together with pointing out some fundamental p...

2008
Guillermo Gallego Catalina Stefanescu

In this Appendix we first present the connection between the stochastic and the deterministic demand model used in Section 2 of the paper. We use the notation of the paper but also expand it as necessary to present the stochastic model and the results. In particular, we flesh out two dual based heuristics for the stochastic problem. Secondly, we briefly explain the connection between the stocha...

2004
Kai Huang Shabbir Ahmed

This paper considers a stochastic dynamic inventory problem involving a single item, linear cost structures, and finite distributions (but not necessarily independent) for the stochastic cost and demand parameters. We develop primal and dual algorithms for a multi-stage stochastic linear programming formulation for the problem. The complexity of the proposed algorithms is shown to be within O(N...

Journal: :INFOR 2008
Kai Huang Shabbir Ahmed

This paper considers a stochastic dynamic inventory problem involving a single item, linear cost structures, and finite distributions (but not necessarily independent) for the stochastic cost and demand parameters. We develop primal and dual algorithms for a multi-stage stochastic linear programming formulation for the problem. The complexity of the proposed algorithms is shown to be within O(N...

Journal: :Complex & Intelligent Systems 2022

Abstract Uncertainty is everywhere in the food delivery process, which significantly influences decision-making for complex on-demand problems, affecting efficiency and customer satisfaction. Especially, service time an indispensable part of process impacted by various uncertain factors. Due to simplicity high accuracy requirement, we model as a Gaussian mixture (GMM). In detail, transform dist...

2007
Indraneel Dasgupta Prasanta K. Pattanaik

We expand the theory of consumer’s behavior, based on the Weak Axiom of Revealed Preference, to permit simultaneously both random choice and choice sets, which are not singletons. We provide a consistency postulate for demand behavior when such behavior is represented in terms of a stochastic demand correspondence. We show that, when the consumer spends her entire wealth, our rationality postul...

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