Intuitionistic fuzzy soft set relations intuitionistic fuzzy rough sets and their applications in decision making problems

1 Most of our real life problems in engineering, social and medical science, economics, environment etc involve imprecise data and their solutions involve the use of mathematical principles based on uncertainty and imprecision. To handle such uncertainties, a number of theories have been proposed. Some of these are fuzzy sets, intuitionistic fuzzy sets, interval valued intuitionistic fuzzy sets and rough sets etc.