Editing Metaphone (section)

==Metaphone 3==
A professional version was released in October 2009, developed by the same author, Lawrence Philips. It is a commercial product sold as source code. Metaphone 3 further improves phonetic encoding of words in the English language, non-English words familiar to Americans, and first names and family names commonly found in the United States. It improves encoding for proper names in particular to a considerable extent.<ref>{{cite web |last1=Guy |first1=Ido |last2=Ur |first2=Sigalit |last3=Ronen |first3=Inbal |last4=Weber |first4=Sara |last5=Oral |first5=Tolga |url=http://www.research.ibm.com/haifa/dept/imt/papers/guyCHI12.pdf |year=2012 |title=Best Faces Forward: A Large-scale Study of People Search in the Enterprise |url-status=dead |archive-url=https://web.archive.org/web/20231201104121/http://www.research.ibm.com/haifa/dept/imt/papers/guyCHI12.pdf |archive-date=December 1, 2023 |access-date=February 23, 2024}}</ref> The author claims that in general it improves accuracy for all words from the approximately 89% of Double Metaphone to 98%. Developers can also now set switches in code to cause the algorithm to encode Metaphone keys 1) taking non-initial vowels into account, as well as 2) encoding voiced and unvoiced consonants differently. This allows the result set to be more closely focused if the developer finds that the search results include too many words that don't resemble the search term closely enough.<ref>{{cite web|url=http://aspell.net/metaphone/|title=Lawrence Philips' Metaphone Algorithm|first=Kevin|last=Atkinson|website=aspell.net|access-date=16 May 2018}}</ref> Metaphone 3 is sold as C++, Java, C#, PHP, Perl, and PL/SQL source, Ruby and Python wrappers accessing a Java jar, and also Metaphone 3 for Spanish and German pronunciation available as Java and C# source.<ref>{{cite web|url=http://www.amorphics.com/|title=Anthropomorphic Software|website=www.amorphics.com|access-date=16 May 2018}}</ref> The latest revision of the Metaphone 3 algorithm is v2.5.4, released March 2015. The Metaphone3 Java source code for an earlier version, 2.1.3, lacking a large number of encoding corrections made in the current version, version 2.5.4, was included as part of the OpenRefine project and is publicly viewable.<ref>{{cite web|url=https://github.com/OpenRefine/OpenRefine/blob/master/main/src/com/google/refine/clustering/binning/Metaphone3.java|title=OpenRefine source for Metaphone3|website=github.com|access-date=2 Nov 2020}}</ref>