![]() ![]() In fact, the premise that human judgments can be used in performing evaluations is essential to the AHP. In making the comparisons, the decision makers can use concrete data about the elements, but they typically use their own judgments about the elements' relative meaning and importance. Once the hierarchy is built, the decision makers evaluate various alternatives by comparing them to each other two at a time. Saaty in the 1970s, AHP, or Analytic Hierarchy Process, is a technique for group decision making wherein the problem is decomposed into a hierarchy of more easily comprehensible sub-problems, each of which can be analyzed independently. The AHP MCDM Methodĭeveloped by Thomas L. Here's how AHP can be used to easily make a complex decision. We'll focus on AHP today since it's mathematically simple compared to the other methods listed above and since it allows us to compare criteria without previously assigning numeric metrics to them. An assumption of TOPSIS is that the criteria are monotonically increasing or decreasing.įinally, we have AHP, one of the most widely used MCDM Methods. TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution) is a method of compensatory aggregation that compares a set of alternatives by identifying weights for each criterion, normalizing scores for each criterion, and calculating the geometric distance between each alternative and the ideal solution, which is the best score in each criterion. This MCDM Method is based on fuzzy logic and is used to address problems whose variables are partly known and partly unknown, being defined as "insufficient data" and "weak knowledge." The idea is to have a large amount of input data and to examine it in an interactional manner. Grey Theory's decision making techniques are highly mathematical. The decision maker uses concordance and discordance indices to analyze outranking relations among different alternatives and to choose the best alternative using CRISP data. These indices are concordance and discordance matrices. Different versions of both methods have been developed, but all methods are based on the same fundamental concepts they just differ operationally and according to the type of decision being made. The main idea is the proper utilization of “outranking relations.” They enable decision makers to model a decision process by using coordination indices. ELECTRE (ELimination Et Choix Traduisant la REalite) and PROMETHEE (Preference Ranking Organization METHod for Enrichment of Evaluations) are the main methods used in the French family of theory decision studies. These methods allow decision makers to select the best choice with the biggest advantage and the least conflict between various criteria. ![]()
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