Scanned Documents
LBSC 796/INFM 718R
Douglas W. Oard
Week 8, October 29, 2007

Expanding the Search Space
High Payoff Investments
The Big Picture
•	Find the words

•	Index the words

•	Do ranked retrieval

•	Use that system to find what you want
Some Issues
•	Language-based search without language!
–	Shape codes

•	Accuracy-selection effect of ranked retrieval
–	Poor recognition scatters in the query-term space

•	Blind relevance feedback
–	 Based on clean text

•	Image-domain summaries
Some Applications
•	Case management for litigation

•	Duplicate detection for declassification productivity and anti-tiling

•	Knowledge management from everything I have ever xeroxed or faxed
Some Applications
•	Legacy Tobacco Documents Library
–	http://legacy.library.ucsf.edu/

•	Google Books
–	http://books.google.com/

•	George Washington’s Papers
–	http://ciir.cs.umass.edu/irdemo/hw-demo/