G.
Marchionini, UNC-CH
What
are the ‘Sources of Evidence’ for
Retrieval?
•Words
–Author’s words
–Indexer’s words (metadata from a controlled vocabulary)
•Actions
–Human (e.g., publisher metadata, signatures)
–System (e.g., date, watermarks)
•Links (citations)
–Human (citations, links)
–System (computed from events or relationships, recommenders)