The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 01, 2000
Filed:
Nov. 19, 1997
Sanjay Elathur Ramaswamy, Scarsdale, NY (US);
Ying Tat Leung, Tarrytown, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Sensitivity information about the average back-ordered sales and inventory levels of a back-order (R,s,S) inventory system is generated with respect to the two decision variables s and S. This information is used for what-if analysis and optimization of the decision variables s and S. The computer implemented algorithm provides sensitivity of both average inventory levels and average back orders with respect to changes in s and q (where q=S-s), for a back-order inventory simulation for any specified demand distribution. Further, the sensitivity information provided by the algorithm is exact when compared to a finite-difference simulation for the case of both discrete and continuous, stationary and non-stationary demands. A finite difference estimate of the sensitivity is obtained by running two simulations where the parameter in question (s or S) differ by a chosen small number, and then calculating the resulting difference in the performance measure of interest, in this case average inventory and back orders.