16. The system of claim 15 , where each boost value represents a degree of relevance of the document to a distinct topic in the plurality of topics.
16. The system of claim 15 , where each boost value represents a degree of relevance of the document to a distinct topic in the plurality of topics. 17. The system of claim 16 , wherein each of the first documents is associated with a score based on the information retrieval score for the respective first document, the respective boost value for the respective first document, and a distinct degree of influence of the interest profile.