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Aiming at crack problems in hydraulic concrete structures, the rough set theory and decision tree analysis are integrated to analyze the cause of crack propagation. Firstly, the measured data are chosen to establish an initial information table. Secondly, the continuous data are discretized by means of rough set analysis. Then, the key factors were obtained from the initial decision table. Lastly, the implicit rules are extracted out of the reduced table based on the decision tree analysis. A case study shows that the integrated method can effectively extract the implicit relation between crack behavior and external influencing factors.1

Causes Mining of Concrete Dam Crack Failure Based on Rough Set and Decision Tree Method