•TREC tracks
•Link analysis
•Multiple sources of evidence (fusion)
–Authors’ words (e.g., full text IR)
–Indexer/abstractor words (e.g., OPACs)
–Authors’ citations/links (e.g., ISI, Google)
–Readers’ search paths (e.g., recommenders, opinion
miners)
–Machine generated features and relationships
•Two key challenges:
–What new relationships can we leverage (human and
machine)?
–How can we integrate multiple sources of evidence?