Assortment of Other Speciﬁc Graph Traversal Use Cases
• Question expert identiﬁcation: Find all the tags associated with
question A. For all those tag, ﬁnd all answers (for any questions) that
are tagged by those tags. For those answers, ﬁnd who created those
• Similar tags: Find all the things that tag A has been used as a tag for.
For all those things, determine what else they have been tagged with.22
If two resources share a “bundle” of resources in common, then they are similar.
This is the notion of “co-association” and can be generalized to ﬁnd the similarity of two resources
based upon their co-association through a third resource (e.g. co-author, co-usage, co-download, etc.). The
third resource and the edge labels traversed determine the meaning of the association.