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1 Journal of Artificial Intelligence and Soft Computing Research

1 2016

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Recursive-rule extraction algorithm with J48graft and applications to generating credit scores

Tanaka Y., Takagi T., Saito T., Iiduka H., Kikuchi H., Bologna G., Mitra S.

Journal of Artificial Intelligence and Soft Computing Research

2016

Vol. 6, No. 1

35--44

The purpose of this study was to generate more concise rule extraction from the Recursive- Rule Extraction (Re-RX) algorithm by replacing the C4.5 program currently employed in Re-RX with the J48graft algorithm. Experiments were subsequently conducted to determine rules for six different two-class mixed datasets having discrete and continuous attributes and to compare the resulting accuracy, comprehensibility and conciseness. When working with the CARD1, CARD2, CARD3, German, Bene1 and Bene2 datasets, Re-RX with J48graft provided more concise rules than the original Re-RX algorithm. The use of Re-RX with J48graft resulted in 43.2%, 37% and 21% reductions in rules in the case of the German, Bene1 and Bene2 datasets compared to Re-RX. Furthermore, the Re-RX with J48graft showed 8.87% better accuracy than the Re-RX algorithm for the German dataset. These results confirm that the application of Re-RX in conjunction with J48graft has the capacity to facilitate migration from existing data systems toward new concise analytic systems and Big Data.