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Things to think about
¢How does the selection of the base set influence computation of H & As? ¢Can we embed the computation of H & A during the standard VS retrieval algorithm? ¢A pagerank score is a global score.  Can there be a fusion between H&A (which are query sensitive) and pagerank?  How would you do it? ¢How do you relate CCIDF in Citeseer to Pagerank?