The higher is this number, the more inconsistent you are. Naturally, when the transitivity rule is enforced, or when you are 100% consistent in your preferences, the deviation will be 0. It is a measurement that indicates how much you violate the transitivity rule. Consistency ratio measures that inconsistency. If your preference between an 'apple' and a 'banana' does not reflect that proportion, then you are said to be inconsistent in your preferences. Logically, you should like an apple 6 times as much as a banana. Suppose you like an apple twice as much as an orange and an orange 3 times as much as a banana. Say, you prefer, to Minimize Cost 7 times as much as you prefer to Maximize Comfort and you prefer to Minimize Cost 3 times as much as to Maximize Safety.įinally, when you are done all objectives pairwise comparison, click the 'Proceed' button in the wizard as shown below. Once you click the Next button on the toolbar for the next set of pair comparisons, do the pairwise comparison according to your preferences. Then set the weight slider position as shown in the following screenshot. Suppose you prefer to Maximize Safety 3 times as much as Maximizing comfort. We will explain more about this feature in the upcoming section. For this example where the pair comparison number is very low, let's uncheck the checkbox "Enforce Transitivity Rule" which is checked by default. Once you click No in the above-shown screen, you will be presented to perform a pairwise comparison among objectives. No worries if you want to add more objective or modify/delete an existing objective. so click No button in the following wizard screen. Once you click the Subjective button, you will be asked if you have any more objective.Ĭlick Yes and follow the same process to add 2 more objectivesįinally, when all of these 3 objectives are identified, you do not have any more objective to add. The analytic Hierarchy Process model can be used when your objective attributes are subjective type. As we do not want to deal with numbers, rather we want to express the attributes subjectively using a pairwise comparison, click "Subjective".
Once you click to proceed, you will be asked what is the type of your objective. So, in the drop-down box, select "Maximize" and then in the text box, enter safety, as shown in the above screenshot.
You know that your first objective is to "Maximize safety". This screen is actually asking you to identify your first objective. Once you click the "Identify your Objectives" button, you will see the following wizard screen. When you start the Decision Matrix, you are presented with the following screen. Say, you want to buy a car and your objectives are
If you are using Rational Will application, then from the dashboard, click the ' Decision Matrix' button to start modeling an Analytic Hierarchy Process. It is as simple as starting the application and following on-screen instructions. Also, It is completely wizard-based, no worry about learning curve or annoyances with confusion about the UI. Additional analyses of the numerical results are completed on the normalization functions, distance metrics, and aggregation functions that can be used for each method.SpiceLogic offers Analytic Hierarchy Process or Ahp tools in Rational Will. Our comparative analysis for this case study indicates that the three fuzzy methods arrive at identical supplier rankings, yet fuzzy GRA requires less computational complexity to generate the same results. The methods are then utilized to complete a green supplier evaluation and selection study for an actual company from the agri-food industry. The incorporation of fuzzy set theory into TOPSIS, VIKOR and GRA methods is thoroughly discussed. This article contributes to this knowledge area by comparing the application of three popular multi-criteria supplier selection methods in a fuzzy environment. The development and implementation of practical decision making tools that seek to address these challenges are rapidly evolving.
Challenges associated with green supplier selection have been broadly recognized by procurement and supplier management professionals. The incorporation of environmental criteria into the conventional supplier selection practices is essential for organizations seeking to promote green supply chain management.
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