This is very interesting. Here is the abstract and link to full
article.
http://papers.ssrn.com/sol3/papers.cfm?abstract_id=1565682
In a way there are similarities with Luca de Alfaro's wikitrust work,
in that this study also focuses on profiling editors as means to
predict quality.
From the article:
We categorized the contributors that belong to cluster 1 as all-round
contributors since they were engaged in almost all types of actions.
Contributors in cluster 2 were labeled as watchdogs since most of
their actions were reverts. Cluster 3 included contributors who
created sentences while seldom engaging in other actions and were
hence called starters. Contributors that belonged to cluster 4,
on the other hand, not only created sentences, but justified them
with links and references. They were therefore classified as content
justifiers. Both starters and content justifiers, however, rarely
modified existing sentences created by themselves or other people.
Cluster 4 included copy editors who contributed primarily through
modifying existing sentences. Finally, those who primarily focused
on removing incorrect sentences, references and links were termed
cleaners. Thus, a contributor for a given Wikipedia article could
assume one of these 6 roles or could be a casual contributor.
Erik Zachte