The Consistency Index The consistency index is: CI = 3.0541 – 3 3 – 1 = 0.0270 M1-16Ĭonsistency Ratio The consistency ratio (CR) tells how consistent the decision maker is with her answers. 333/ 1.444 M1-11įinal Matrix for Hardware To determine the priorities for hardware for the three computer systems, we simply find the average of the various rows from the matrix of numbers as follows: M1-12 Normalizing the Matrix System-2 System-3 System-1 Hardware System-1 1 3 9 1/3 6 System-2 1 System-3 1/9 1/6 1 Column Totals 1.444 4.167 16.0 The totals are used to create a normalized matrix M1-10 M1-7īeginning Comparison Matrix System-2 System-3 System-1 Hardware System-1 1 3 9 6 System-2 System-3 1 Judy Grim has used the 9-point scale for pairwise comparison to evaluate each system on hardware capabilities M1-8Ĭomparison Matrix (continued) System-2 System-3 System-1 Hardware System-1 1 3 9 1/3 6 System-2 1 System-3 1/9 1/6 1 M1-9 She believes that the hardware for computer SYSTEM-2 is strongly to very strongly preferred to the hardware for computer SYSTEM-3, a score of 6.She believes that the hardware for computer SYSTEM-1 is extremely preferred to computer SYSTEM-3.Thus, Judy uses the number 3, representing moderately preferred. Judy determines that the hardware for computer SYSTEM-1 is moderately preferred to computer SYSTEM-2.Judy begins by looking at the hardware factor and by comparing computer SYSTEM-1 with computer SYSTEM-2.The decision maker, Judy Grim, needs to compare two different alternatives using a scale that ranges from equally preferred to extremely preferred. M1-5ĭecision Hierarchy for Computer System Selection Select Computer System Hardware Software Vendor Support System: System: System: 1 2 3 1 2 3 1 2 3 Figure (1) The key to using AHP is pairwise comparisons. To begin, Judy has placed these factors and alternatives into a decision hierarchy (see Figure 1).She has labeled these SYSTEM-1, SYSTEM-2, and SYSTEM-3. Furthermore, Judy has narrowed down her alternatives to three possible computer systems.She has determined that the most important overall factors hardware, software, and vendor support.As an example of this process, we take the case of Judy Grim, who is looking for a new computer systems for her small business.Starting at the lowest level, for each level, make pairwise comparison of the factors.Then, a number of pairwise comparisons are done, which result in the determination of factor weights and factor evaluations. This hierarchy reveals the factors to be considered as well as the various alternatives in the decision.The decision maker starts by laying out the overall hierarchy of the decision.This process involves pairwise comparisons.Analytic hierarchy process (AHP) is an approach designed to quantify the preferences for various factors and alternatives.Saaty and published in his 1980 book, The Analytic Hierarchy Process. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.įor technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Matthew Walls (email available below). If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. You can help adding them by using this form. We have no bibliographic references for this item. It also allows you to accept potential citations to this item that we are uncertain about. This allows to link your profile to this item. If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. See general information about how to correct material in RePEc.įor technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact. When requesting a correction, please mention this item's handle: RePEc:inm:ormnsc:v:36:y:1990:i:3:p:249-258. You can help correct errors and omissions. All material on this site has been provided by the respective publishers and authors.
0 Comments
Leave a Reply. |