All this is illustrated by the priorities in the example below. Things can become complicated with multiple levels of Criteria, but if there is only one level, their priorities also add to 1.
Two detailed case studiesspecifically designed as in-depth teaching examples, are provided as appendices to this article: Simple step-by-step example with four Criteria and three Alternatives: Choosing a leader for an organization. There are many categories, measured by different units, and the analyzed systems fulfill various criteria in varying degree.
As we go through this process, we increase our global understanding of whatever complex reality we are studying. System B is superior to system A, thanks to significantly better environmental performance.
The effect of bottled water consumption on the natural environment One of the main burdens on the natural environment associated with the consumption of bottled water is its energy-intensity and the waste produced.
A simple AHP hierarchy. In this case, the authors tried to quantify how much bottled water is drunk in Cracow and then using American and Swiss LCA analysis, assess the actual environmental costs of such consumption for the city and its residents.
There are three Alternatives for reaching the Goal, and four Criteria to be used in deciding among them. Human organizations are often structured as hierarchies, where the hierarchical system is used for assigning responsibilities, exercising leadership, and facilitating communication.
Advanced students continue the subdivision all the way to the level of the cell or molecule. It consists of an overall goal, a group of options or alternatives for reaching the goal, and a group of factors or criteria that relate the alternatives to the goal.