Data Representation (cont.)

• Support counting is thus reduced to checking the percentage of bit slices that do not contain all zeros.

• I-steps and S-steps are achieved by means of an AND operation between the current sequence and the length-1 itemset added onto the end.

• For an I-step, only the AND is necessary, since the item on the end occurs within the same transaction as the last itemset in the current sequence:

Slide Links:

Slide Comments: