Evaluate the collective function of references cited together in a given text segment.
Classify their combined role into one of the following categories: 'method', 'background', or 'result'.

Text:During phase (1), it looks for hidden correlations among the attribute values and the class attribute in the training data set and generates them as ‘‘Class Association Rule’’ (CARs) in ‘‘If-Then’’ format (Thabtah et al., 2004).
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