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EMLINK: Stata module to perform probabilistic record linkage (Fellegi-Sunter) with unsupervised EM estimation

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  • Mario Anderson Apaza Ñaupa

Programming Language

Abstract

emlink assumes the comparison variables have already been normalized. The command does not clean strings for you. Accents, mixed case, digits and stray punctuation create artificial disagreements that the EM reads as evidence against a match, so normalization must happen first {bf:and must use identical rules in both files}. A file that keeps accents linked against one that strips them will link badly no matter how the model is specified.

Suggested Citation

  • Mario Anderson Apaza Ñaupa, 2026. "EMLINK: Stata module to perform probabilistic record linkage (Fellegi-Sunter) with unsupervised EM estimation," Statistical Software Components S459885, Boston College Department of Economics.
    • Handle: RePEc:boc:bocode:s459885
    Note: This module should be installed from within Stata by typing "ssc install emlink". The module is made available under terms of the MIT license (https://opensource.org/licenses/MIT).
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    File URL: http://fmwww.bc.edu/repec/bocode/e/emlink.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/_/_emlink_split.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/e/emlink.sthlp
    File Function: help file
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/e/emlink_engine.mata
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/e/emlink_test.do
    Download Restriction: no
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