The Cologne phonetic name coding procedure.
string or vector of strings to encode
maximum length of the resulting encodings, in characters
word is the name to be encoded. The variable
maxCodeLen is the limit on how long the returned name code
should be. The default is 4.
cologne algorithm is only defined for inputs over the
standard English alphabet, i.e., "A-Z," "Ä," "Ö," "Ü," and
"ß." Non-alphabetical characters are removed from the string in a
locale-dependent fashion. This strips spaces, hyphens, and numbers.
Other letters, such as "ç," may be permissible in the current locale
but are unknown to
cologne. For inputs outside of its known
range, the output is undefined and
NA is returned and a
warning this thrown. If
cologne attempts to process the strings. The default is
the Cologne encoded character vector
James P. Howard, II, "Phonetic Spelling Algorithm Implementations for R," Journal of Statistical Software, vol. 25, no. 8, (2020), p. 1–21, <10.18637/jss.v095.i08>.
Hans Joachim Postel. "Die Koelner Phonetik. Ein Verfahren zur Identifizierung von Personennamen auf der Grundlage der Gestaltanalyse." IBM-Nachrichten 19. Jahrgang, 1969, p. 925-931.
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