| 摘要 |
A computer-implemented method and system is provided for tracking a cumulative number of identifiable visitors to different objects (S1, S2 . . . SN), each of which may be visited by multiple visitors. A data structure is adapted to contain records relating to each object (S1, S2 . . . SN) and to each combination of two or more objects (S1S2, S1S3, . . . S1SN, S2S3, S2S4, . . . S2SN, S1S2S3, S1S3S4, . . . S1SN-1SN etc.). For each visitor visiting an object (SM) for the first time there is determined a current combination of objects previously visited by the visitor. If no objects have been previously visited by the visitor, a respective record relating to the object (SM) is incremented; and if objects have been visited by the visitor, the record relating to the current combination is decremented and the record relating to the combination of the object (SM) with the current combination is incremented.
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