35. The computer program product of claim 23 , further comprising merging two or more indexes that correlate to attributes along an attribute path to form a single index.
35. The computer program product of claim 23 , further comprising merging two or more indexes that correlate to attributes along an attribute path to form a single index. 37. The computer program product of claim 35 , wherein one index of the merged indexes is connected to the other index through an arbitrarily large number of concept-to-concept relationships defined by concept attributes of multiple categories.