Conclusions

Imagine a catalog where users can freely assign tags to any work in the collection. The integrated library system that manages the online catalog can calculate the h index of the tag cloud after each new tag is added. This would be dynamic and hidden from the users. Also imagine that by this point studies have shown that if a tag cloud for a work scores an h index of 15 or higher, then it is a very descriptive tag cloud. The integrated library system can alert the librarians every time a new work reaches an h index of 15. The librarians can then review the tag cloud, without editing it, and see if any additional Library of Congress Subject Headings should be added.

In this scenario, the taxonomy and folksonomy are in conversation with each other as a proxy for a librarian-user dialog with the h index as the moderator. Here we get the best of both worlds: the flexible, adaptable, and cheap folksonomy can continue to monitor the changing meaning of a work, while the orderly taxonomy can prevent chaos from overriding the online catalog. Benchmarking such a useful metric as the h index will require a larger sampling of user-generated tags, possibly by discipline, genre, and form.