Scanned Documents

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Scanned Documents

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

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Expanding the Search Space
Scanned Docs
Identity Harriet Later, I learned that John
had not heard
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High Payoff Investments
Searchable Fraction
Transducer Capabilities
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The Big Picture

• Find the words
• Index the words
• Do ranked retrieval
• Use that system to find what you want

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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

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Some Applications

• Case management for litigation
• Duplicate detection for declassification
  productivity and anti-tiling
• Knowledge management from everything I have ever
  xeroxed or faxed

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Some Applications

• Legacy Tobacco Documents Library
• http//legacy.library.ucsf.edu/
• Google Books
• http//books.google.com/
• George Washingtons Papers
• http//ciir.cs.umass.edu/irdemo/hw-demo/