recordSwap_cpp function

Targeted Record Swapping

Applies targeted record swapping on micro data set, see ?recordSwap for details.

NOTE: This is an internal function called by the R-function recordSwap(). It's only purpose is to include the C++-function recordSwap() using Rcpp.

recordSwap_cpp(
  data,
  hid,
  hierarchy,
  similar_cpp,
  swaprate,
  risk,
  risk_threshold,
  k_anonymity,
  risk_variables,
  carry_along,
  log_file_name,
  seed = 123456L
)

Arguments

• data: micro data set containing only integer values. A data.frame or data.table from R needs to be transposed beforehand so that data.size() ~ number of records - data.[0].size ~ number of varaibles per record. NOTE: data has to be ordered by hid beforehand.
• hid: column index in data which refers to the household identifier.
• hierarchy: column indices of variables in data which refers to the geographic hierarchy in the micro data set. For instance county > municipality > district.
• similar_cpp: List where each entry corresponds to column indices of variables in data which should be considered when swapping households.
• swaprate: double between 0 and 1 defining the proportion of households which should be swapped, see details for more explanations
• risk: vector of vectors containing risks of each individual in each hierarchy level.
• risk_threshold: double indicating risk threshold above every household needs to be swapped.
• k_anonymity: integer defining the threshold of high risk households (k-anonymity). This is used as k_anonymity <= counts.
• risk_variables: column indices of variables in data which will be considered for estimating the risk.
• carry_along: integer vector indicating additional variables to swap besides to hierarchy variables. These variables do not interfere with the procedure of finding a record to swap with or calculating risk. This parameter is only used at the end of the procedure when swapping the hierarchies.
• log_file_name: character, path for writing a log file. The log file contains a list of household IDs (hid) which could not have been swapped and is only created if any such households exist.
• seed: integer defining the seed for the random number generator, for reproducibility.

Returns

Returns data set with swapped records.