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Graph Analysis Matching Program

Graph Analysis Matching Program. Burdette Pixton. Record Linkage. Object Identification Problem Identifies possible links in pedigrees Advantages Compress search results Merge pedigrees Discover missing Information. Record Linkage. Manual Time consuming Error prone N 2 Blocking n 2.

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Graph Analysis Matching Program

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  1. Graph Analysis Matching Program Burdette Pixton

  2. Record Linkage • Object Identification Problem • Identifies possible links in pedigrees • Advantages • Compress search results • Merge pedigrees • Discover missing Information

  3. Record Linkage • Manual • Time consuming • Error prone • N2 • Blocking • n2

  4. Record Linkage • Current Approaches • Naïve approach • Deterministic algorithms • Probabilistic Algorithms

  5. Record Linkage Name: James Paul Name: J. Paul Sex: M Sex: M DOB: 7/4/1804 DOB: 7/11/1804 POB: England POB: England DOD: 8/15/1845 DOD: 8/15/1845 Parents: Howard Paul Mary Jones Parents: H. Paul Mary Jones Children: Lucy Paul Children: Lucy Paul

  6. Record Linkage • Problems with Current Standards • Uses Probabilistic Record Linkage Formula • Weights and thresholds are 10 years old • Depends on attributes of one record • Does not completely solve missing fields problem

  7. Record Linkage Name: James Paul Name: J. Paul Sex: M Sex: M DOB: 7/4/1804 DOB: 7/11/1804 POB: England POB: England DOD: 8/15/1845 DOD: 8/15/1845 Parents: Howard Paul Mary Jones Parents: H. Paul Mary Jones Children: Lucy Paul Children: Lucy Paul

  8. Thesis Statement Graph-matching can enhance current record linkage techniques to find a smaller set of possible matches and have high precision.

  9. GRAMP - Overview • Uses Multiple records • Transverse two graphs in parallel • Continue until no more links • Compare related nodes to each other to get measurement

  10. Record Linkage Name: James Paul Name: J. Paul Sex: M Sex: M DOB: 7/4/1804 DOB: 7/11/1804 POB: England POB: England DOD: 8/15/1845 DOD: 8/15/1845 Parents: Howard Paul Mary Jones Parents: H. Paul Mary Jones Children: Lucy Paul Children: Lucy Paul

  11. Record Linkage Name: Howard Paul Name: H. Paul Sex: M Sex: M DOB: 2/4/1789 DOB: 2/4/1789 POB: England POB: England DOD: 1/13/1815 DOD: 8/15/1845 Parents: Louis Paul ?? Parents: Louis Paul Michelle P. Children: James Paul Children: J Paul

  12. GRAMP • Determine probable matches • Weakness is decreased • Keep those with potential • Transverse the graph • Determine relationships • Compute similarity matches against both sets • Recursive calls • Combine Measurements • For each node in graph

  13. GRAMP • Testing • Records with Errors • Records without Errors • Random set of Records • Expected Results • Do similar or better, smaller blocks • Slow

  14. Contributions • Provides a useful tool for genealogical, census, and statistical programs • An algorithm which matches objects utilizing surrounding nodes • Offers a different approach to the object identity problem

  15. Questions/Comments

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