Retrieval and Ranking of Semantic Entities for Enterprise Knowledge Management Tasks

We describe a task-sensitive approach to retrieval and ranking of semantic entities, using the domain information available in an enterprise. Our approach utilizes noisy named-entity tagging and document classification, on top of an enterprise search engine, to provide input to a novel ranking metric for each entity retrieved for a task. Retrieval is query-centric, where the user query is the target topic (e.g., a technology needed for a proposal). Named entities are then extracted from the retrieved documents, and ranked according to their similarity to the target topic. We evaluate our approach by comparing to a baseline retrieval and ranking technique that is based on entity occurrence rates, and show encouraging results.