syn.pmm

Generates univariate synthetic data using predictive mean
 matching.

datagen

A tool for producing synthetic versions of microdata containing confidential information so that they are safe to be released to users for exploratory analysis. The key objective of generating synthetic data is to replace sensitive original values with synthetic ones causing minimal distortion of the statistical information contained in the data set. Variables, which can be categorical or continuous, are synthesised one-by-one using sequential modelling. Replacements are generated by drawing from conditional distributions fitted to the original data using parametric or classification and regression trees models. Data are synthesised via the function syn() which can be largely automated, if default settings are used, or with methods defined by the user. Optional parameters can be used to influence the disclosure risk and the analytical quality of the synthesised data. For a description of the implemented method see Nowok, Raab and Dibben (2016) <doi:10.18637/jss.v074.i11>. Functions to assess identity and attribute disclosure for the original and for the synthetic data are included in the package, and their use is illustrated in a vignette on disclosure (Practical Privacy Metrics for Synthetic Data).

Beata Nowok

synthpop

Generating Synthetic Versions of Sensitive Microdata for
Statistical Disclosure Control

Chris Dibben

Joshua Snoke

Caspar van Lissa

Lotte Pater

syn.pmm function

<dl> <dt>y</dt>
<dd>an original data vector of length <code>n</code>.</dd> <dt>x</dt>
<dd>a matrix (<code>n</code> x <code>p</code>) of original covariates.</dd> <dt>xp</dt>
<dd>a matrix (<code>k</code> x <code>p</code>) of synthesised covariates.</dd> <dt>proper</dt>
<dd>a logical value specifying whether proper synthesis 
 should be conducted. See details.</dd> <dt>smoothing</dt>
<dd>smoothing method. See documentation for 
 <code>syn.smooth</code>.</dd> <dt>...</dt>
<dd>additional parameters.</dd></dl>

Arguments

Synthesis by predictive mean matching — syn.pmm

<dl>

 <dt>y</dt>
<dd>an original data vector of length <code>n</code>.</dd>

 <dt>x</dt>
<dd>a matrix (<code>n</code> x <code>p</code>) of original covariates.</dd>

 <dt>xp</dt>
<dd>a matrix (<code>k</code> x <code>p</code>) of synthesised covariates.</dd>

 <dt>proper</dt>
<dd>a logical value specifying whether proper synthesis 
 should be conducted. See details.</dd>

 <dt>smoothing</dt>
<dd>smoothing method. See documentation for 
 <code>syn.smooth</code>.</dd>

 <dt>...</dt>
<dd>additional parameters.</dd>

</dl>

syn.pmm: Synthesis by predictive mean matching

Description

Usage

Value

Arguments

Details

See Also