Product-line planning under uncertainty

Download
2018
Karakaya, Şakir
This study addresses the problem of multi-period mix of product-lines under a product- family, which incorporates launching decisions of new products, capacity expansion decisions and product interdependencies. The problem is modelled as a two-stage stochastic program with recourse in which price, demand, production cost and cannibalisation effect of new products are treated as uncertain parameters. The solution approach employs the Sample Average Approximation based on Monte Carlo bounding technique and multi-cut version of L-shaped method to solve approximate problems efficiently, which is tested on different cases considering VSS and EVPI performance measures. The data collected through two experimental studies is analysed using ANOVA and Random Forest methodology in order to understand which problem parameters are significant on the performance measures and to generate some rule-based inferences reflecting the relationship between significant parameters and the performance of the proposed stochastic model.  

Suggestions

Product Line Planning Under Uncertainty
Karakaya, Şakir; Köksal, Gülser (2018-11-01)
This study addresses the problem of multi-period mix of product-lines under a product family, which incorporates launching decisions of new products, capacity planning decisions and product interdependencies. The problem is modeled as a two-stage stochastic program in which price, demand, production cost and cannibalisation effect of new products are characterized as uncertain parameters. The solution approach employs the Monte Carlo bounding technique and Lshaped method, which is tested on real-like cases ...
Product-line planning under uncertainty
Karakaya, Şakir; Köksal, Gülser (2022-02-01)
This study addresses a multi-period product-line-mix problem considering product interdependencies and uncertainties regarding price, demand, production cost, and the cannibalization effect of new products. The problem is modeled as a two-stage stochastic program. In the first-stage, decisions for the release times of new product-lines and capacity expansion are made without waiting for the realization of random events. Sales volumes are determined in the second-stage after more information about uncertaint...
Production and stock management under manufacturer and customer driven substitution
Töre, Nurşen; Savaşaneril Tüfekci, Seçil; Department of Industrial Engineering (2014)
In this thesis, the stock management problem of a manufacturer is studied in the presence of product substitution flexibility. The study consists of two parts. In the first part, the manufacturer's joint production scheduling and product substitution decisions are analyzed. It is assumed that there are multiple substitutable items and for each item, and inventory is kept separately. If upon demand arrival, stock is not available, then demand is backordered. Depending on the inventory level, it is possible t...
Analysis of an inventory system with advance emand information and supply uncertainty
Arıkan, Emel; Süral, Haldun; Department of Industrial Engineering (2005)
In this study we address a periodic review capacitated inventory system with supply uncertainty where advance demand information is available. A stochastic dynamic programming formulation is applied with the objective of minimizing the expected inventory related costs over a finite horizon. Three different supply processes are assumed. Under the all-or-nothing type supply process and partially available supply process, the structure of optimal policy is proved to be a base stock policy and numerical example...
Managing product variety through delayed product differentiation using vanilla boxes
Burhan, Özlem; Meral, Fatma Sedef; Department of Industrial Engineering (2004)
In an attempt to reduce costs and improve customer satisfaction, manufacturers have been adopting strategies such as Delayed Product Differentiation (DPD) while managing broader product lines. In this study, first a general framework on DPD is formed in the light of basic articles in the literature. The vanilla box assembly process which is a special form of modular design type of DPD is modeled and analyzed. In the vanilla box assembly process, inventory is stored in a special form of semi-finished product...
Citation Formats
Ş. Karakaya, “Product-line planning under uncertainty,” Ph.D. - Doctoral Program, Middle East Technical University, 2018.