Search and Retrieval.

Expert finding is a rapidly developing Information Re-trieval task and a popular research domain. The opportunity of search for knowledgeable people in the scope of an orga-nization or world-wide is a feature which makes modern En-terprise search systems commercially successful and socially demanded. A number of efficient expert finding approaches was proposed recently. Despite that most of them are based on theoretically sound measures of expertness, they still use rather unrealistic and oversimplified principles. In our re-search we try to avoid these limitations and come up with models that go beyond the assumptions used in state-of-the-art expert finding methods. The fundamental principle of existing approaches to ex-pert finding is to infer expertise by analyzing the co-occurr-ence of personal identifiers and query terms in the scope o