IRIS

The IRIS method

IRIS is an interactive method that aim at sorting alternatives into ordered classes. The assignment of alternatives to classes corresponds to Electre Tri. The specificity of the IRIS method is that the DM does not have to specify the weights of criteria, but intead provides assignment examples, i.e., typical elements of the classes.

IRIS documents

• IRIS input file in a flat text format
• IRIS input file in a XML format
• IRIS file in a XML format (containing both input and output information)

Relevant references

• L.C. Dias, V. Mousseau, J. Figueira, and J.N. Clìmaco. An aggregation/disaggregation approach to obtain robust conclusions with ELECTRE TRI. European Journal of Operational Research, 138(2):332-348, April 2002.
• L.C. Dias and V. Mousseau. IRIS: A DSS for Multiple Criteria Sorting Problems. Journal of Multi-Criteria Decision Analysis, 12:285-298, 2003.
• S. Damart, L. Dias, and V. Mousseau. Supporting groups in sorting decisions: Methodology and use of a multi-criteria aggregation/disaggregation DSS, Decision Support Systems, 43(4):1464-1475, August 2007.

Links

Windows implementation of IRIS