cellsynth: Cell-Wise Synthetic Copies of De-Identified Tables
Turns de-identified tables ('Excel' workbooks or delimited
text files) into synthetic counterparts with the same layout, the same
identifiers and the same data-entry quirks. Every non-identifier cell,
missingness included, is censored once per sweep and redrawn by copying
the raw value of a donor drawn from a classification and regression
tree leaf fitted on the rest of the table, in the spirit of the
sequential tree-based synthesis of Reiter (2005) "Using CART to
generate partially synthetic public use microdata", Journal of Official
Statistics 21(3):441-462, and Nowok, Raab and Dibben (2016)
<doi:10.18637/jss.v074.i11>. Identifiers are kept so that tables stay
joinable, and columns of other tables can condition the synthesis so
cross-table associations survive a later join. Synthetic copies are
intended for developing and testing analysis code; they are not an
anonymisation method.
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