In compiling the hierarchy there are three basic principles in formulating analytic hierarchy process as quoted Saaty TL (1993):
1. Describes and outlines the hierarchy of the road breaking the problem into elements separate.
2. Differentiation and synthesis of priorities, ie the elements are ranked according to relative importance.
3. Logical consistency, namely ensuring that all elements are grouped logically and consistently ranked in accordance with a logical criterion.
Hierarchy is divided into:
1. Structural Hierarchy; In this hierarchy, complex systems are organized into principal components in descending order of their structural properties such as: size, wake up. This hierarchy is very closely related to the way our brains to analyze a complex thing and then split into a number of ideas.
2. Functional Hierarchy; This hierarchy describes a complex system into basic elements according to their essential relationship.
This method can divide the situation is complex, unstructured, into a component and arranged into a hierarchy. Where in the hierarchy will be determined varaibel where they were deemed most important and act to influence the outcome in these situations. This hierarchy can also isolate the relevant factors and, while demonstrating to the larger context, namely the relationship between these factors with each other and with the system as a unified whole.
Application of AHP in a problem must be tried and tried again, repeated over time. We're hard to expect an immediate resolution of complex issues that have been experienced. Because this process can be allowed to be revised. Every repetition of this process is like making a hypothesis and test it again so in the end will add to the understanding of a system.
This process can be applied to many real problems and is particularly useful for the allocation of resources realtionship, planning, analysis and policy impact of conflict resolution.
When compared with other methods in making decisions then the AHP method has several advantages, among others:
Provide one single model that is easily understood, easy for a variety of structured problems.
Can handle interdependent elements into one system.
To provide a scale to measure things and form a method to assign priority.
In general, the steps that must be done in using the AHP to solve the problem is:
1. Defining the problem and determine the desired solution.
2. Making a decision hierarchy structure so that complex problems can be viewed from the side of detail.
3. Priorities for each element of the problem at the level of the hierarchy.
This process will result in weight towards the achievement of goals, so that the element with the highest weights have priority handling.
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