Sequential unreliable newsboy ordering policies
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In this paper, we show how ordering time can be used as a mechanism to mitigate the supply risks of the unreliable newsboy. We consider the situation where a firm has an option of placing a series of sequential orders such that a new order is placed only after the yield from the previous order is known and derive an optimal order quantity for each ordering stage. The effectiveness of our approach is assessed by comparing its expected cost with the expected cost of the conventional reliable newsboy problem. It is demonstrated that the adverse effect of supply side risks can be almost completely negated by adopting our approach when the combined purchasing and holding costs for a low cost supplier at an earlier stage are equal to those of a high cost supplier at the next stage. Computational experiments suggest that the sequential ordering policy performs better than a simultaneous ordering strategy when customer service level norms become stringent and inventory holding costs decrease.
KeywordsUnreliable newsboy Supply chain risk management Stochastic dynamic programming Multiple lot sizing
- Chao, X., Gong, X., & Zheng, S. (2014). Optimal pricing and inventory policies with reliable and random-yield suppliers: characterization and comparison. Annals of operations Research. doi: 10.1007/s10479-014-1547-0.
- Chen, W., Feng, Q., & Seshadri, S. (2013). Sourcing from suppliers with random yield for price-dependent demand. Annals of Operations Research, 208, 557–579. doi: 10.1007/s10479-011-1046-5.
- Federgruen, A., & Yang, N. (2011). Supply chain management under simultaneous supply and demand risks. In H. Gurnani, A. Mehrotra, & S. Ray (Eds.), Supply chain disruptions: Theory and practice of managing risk. London: Springer.Google Scholar
- Gerchak, Y. (1996). A newsvendor with multiple, unreliable, all or- nothing suppliers. Working paper. Waterloo, ON: University of Waterloo.Google Scholar
- Grosfeld-Nir, A., & Gerchak, Y. (1996). Production to order with random yields: Single-stage multiple lot sizing. IIE Transactions, 28, 669–676.Google Scholar
- Gurnani, H., Akella, R., & Lehoczky, J. (1996). Optimal order policies in assembly systems with random demand and random supplier delivery. IIE Transactions, 28, 865–878.Google Scholar
- Hammond, J. H., & Raman, A. (1994). Sport Obermeyer Ltd. HBR case study no. 695022.Google Scholar
- Inderfurth, K. (2004). Analytical solution for a single-period production-inventory problem with uniformly distributed yield and demand. Central European Journal of Operations Research, 12, 117–127.Google Scholar
- Leidy, M. P. (1992). Hedging across suppliers under stochastic input deliveries. Economic Notes, 21, 39–59.Google Scholar
- Merzifonluoglu, Y., & Feng, Y. (2013). Newsboy problem with multiple unreliable suppliers. International Journal of Production Research. doi: 10.1080/00207543.2013.835497.
- Qin, Y., Wang, R., Vakharia, A. J., Chen, Y., & Seref, M. (2010). The newsvendor problem: Review and directions for future research. European Journal of Operational Research. doi: 10.1016/j.ejor.2010.11.024.