External Resources
• Lay people doing this
task with unfamiliar
publications may use
a search engine, using
paper title as query
• Our method tries to
approximate this
• For each citation c in C
– Query search engine with title of
c as phrase search to obtain a
set of relevant URLs
– Represent c by a feature vector
of relevant URLs and weighting
scheme
• Apply hierarchical agglomerative
clustering (HAC) on C to derive k
clusters
– Cosine similarity
– Tested with single link, complete
link and group average