Figure 4

Hybrid recommender and personalized search. A matched item from the search engine is ranked, based on previously learned user preferences, and then refined by the system's knowledge of its importance. An example: (a) A search for "oxidoreductase"' is performed on the Sulfolobus solfataricus genome; (b) The relevance for each search item is listed in the Relevance column. Items containing "Fe-S" have the highest relevance due to TF-IDF ranking. The user subsequently rates items containing Fe-S low (1) and items containing NADH high (5) using the Feature Rating column (rating action not shown); (c) In a subsequent search for oxidoreductase, the items containing NADH are rated above those containing Fe-S, based on the user profile.