Has anyone ever come across a full definition of the fuzzy logic system that IGI/FamilySearch.org uses in terms of spelling variations for surnames, never mind given name variants?
As regards the latter I can imagine that lookup tables are involved, but I'm unsure about surnames, - as an equivalent database would be truly massive.
That latter comment about surnames in the sense that the I would have to believe that the IGI/FamilySearch.org search engine sometimes gives better results than I would have expected from the use of a Soundex based system alone. [NB there are several different "flavours" of Soundex.]
On the other hand, there are many occasions in a Scottish context, when the IGI/FamilySearch.org search engine appears to miss out very obvious cognate hits..............
David
The FamilySearch.org Search Engine - Surname Variants
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