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Heureka automatically identifies 5 AMEX cards Mastercard cards in a single file with no additional risk characteristics. The calculation is as follows:
Number of Characteristic Hits x Category Weight x Characteristic Weight = File Risk Score
5 AMEX Hits x Mastercard Hits x Credit Card Category Weight x AMEX Characteristic Mastercard Characteristic Weight = File Risk Score
5 x 0.8 x 0.9 = File Risk Score of 3.6
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