The csv file has to be formatted as follows: 1. The first row has to contain the following entries: a) First and second cell arbitrary, from the third cell on, list the alternatives 2. All other rows must include the following for each criterion: a) First column: criterion name b) Second column: either "+" or "-", indicating if the criterion needs to be maximized or minimized c) Other columns: values of the alternative for the criteria 3. Here is a sample file for the André and Angelique: Buying Their Dream Home problem. This sample CSV file could be downloaded from: http://tavana.us/poitiers.csv Criteria P/N Naintre Poitiers Centre Saint Benoit Saint Cyprien Biard Real Estate Tax Rate - 1.50% 2.00% 1.80% 2.10% 1.30% Square Meters + 300 250 200 200 350 Price - 150000 350000 180000 165000 210000 Resale Market Forecast + -5.00% 2.00% -1.00% -4.00% -2.00% Community size (population) - 20000 15000 5000 8500 19000 Number of Retail outlets + 250 100 225 215 310 Distance to work (KM) - 20 5 19 9 11 Number of schools + 2 1 3 2 3 Crime rate - 0.70% 0.10% NA 0.40% 0.20% 4. Make sure that every row has the same number of columns 5. Empty cells and cells with text for value only (i.e. NA) will be ignored 6. Dollar or Euro signs next to numbers will be ignored 7. If you use % sign in the cells be consistent and use it for the entire row because the program ignored % signs because those numbers are already normalized 8. Make sure cells do not contain commas (i.e. thousands separator) 9. Make sure cells do not contain a linebreak.