Changes

[http://en.wikipedia.org/wiki/Tussenvoegsel Tussenvoegsel] are surname prefixes, specifically in the Dutch language but used here generically, such as the words Van and De. A custom compiled [http://www.edegan.com/repository/SurnamesNames-Tussenvoegsel.txt list of Tussenvoegsel]is used in the normalization process. Tussenvoegsel can be removed (and recorded with a binary variable) or concatenated with the surname. Note that in some sources Tussenvoegsel can be identified by their lack of capitalization.