A Ranking Approach for Interval Numbers

To solve the problem-multiple attribute decision with uncertain interval numbers, the author proposes a ranking approach for interval numbers, revises and improves the concept of possibility in reference, and also gives a proof to some conclusions playing an important role in ranking. Based on the above, this paper also points out a simple algorithm for interval numbers, which makes the ranking for a few interval numbers fast and effective and passes though the test by living examples.