24 Sep 2003
CS 6210 – Module 6
23
Ranking
related papers in retrieval
ˇCiteseer uses two forms
of relatedness to recommend “related articles”:
lTF ×
IDF
ˇIf above a threshold,
report it
lCC (Common Citation) ×
IDF
ˇCC = Bibliographic
Coupling
ˇIf two papers share a
rare citation, this is more important than if they share a
common one.