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ListReader : Wrapper Induction for Lists in OCRed Documents

ListReader : Wrapper Induction for Lists in OCRed Documents. Thomas Packer BYU CS DEG 2012.03.17. We Love Data (In Digital Form). Lots of Paper Documents in the World. Lots of Text in Paper Documents. Lots of Lists in Text Lots of Data in Lists. Manual Data Entry.

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ListReader : Wrapper Induction for Lists in OCRed Documents

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  1. ListReader:Wrapper Induction for Lists in OCRed Documents Thomas Packer BYU CS DEG 2012.03.17

  2. We Love Data (In Digital Form)

  3. Lots of Paper Documents in the World

  4. Lots of Text in Paper Documents

  5. Lots of Lists in TextLots of Data in Lists

  6. Manual Data Entry

  7. Wrappers: Individualized Extraction Rules

  8. Semi-Automatic Wrapper Induction

  9. Weakly-supervisedWrapper Induction Semi-supervised Wrapper Induction

  10. Data: Image

  11. Data: OCR

  12. Data: Hand-Labeled OCR

  13. Induced Regex Wrappers Single-Specific Character Classes (i)(\. )(Lydia)( )(Lewis)(\*, )(b\. ) … [a-z] [A-Z] [0-9] [ \t\r\n] <each punct.> Single-General ([a-z]{1,5})([ \t\r\n\.]{1,6})([a-zA-Z]{3,9})([ \t\r\n]{1,5}) ([a-zA-Z]{3,9})([ \t\r\n\*,]{1,7})([ \t\r\n\.a-z]{1,7}) … Multi-General ([iv]{1,3})([ \.]{2,2})([ACHJLacdehilmnrstuvy]{4,6})([ ]{1,1}) ([Leisw]{5,6})([ \*,]{2,3})([ \.abp]{3,5}) …

  14. Preliminary Results(Field Label F-measure, Small Dataset)

  15. Conclusions and Future Work

  16. All done. Suggestions?

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