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Probabilistic Record Linkage and Deduplication after Indexing, Blocking, and Filtering

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DLAW01 - 'Data linkage and anonymisation: setting the agenda'

When linking two databases (or deduplicating a single database) the number of possible links grows rapidly in the size of the databases under consideration, and in most applications it is necessary to first reduce the number of record pairs that will be compared. Spurred by practical considerations, a range of indexing or blocking methods have been developed for this task. However, methods for inferring linkage structure that account for indexing, blocking, and filtering steps have not seen commensurate development. I review the implications of indexing, blocking and filtering, focusing primarily on the popular Fellegi-Sunter framework and proposing a new model to account for particular forms of indexing and filtering. 

This talk is part of the Isaac Newton Institute Seminar Series series.

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