set_column_type

Set the type of a column in metadata

Generates synthetic tabular data from real datasets using
Gaussian copula models, with parametric marginal selection for
numerical columns and a cumulative-frequency embedding that brings
categorical and boolean columns into the same joint copula. Includes
a metadata system with column types and primary keys, declarative
constraints enforced via rejection sampling, conditional sampling,
and quality, validity and privacy reports modeled on those of the
'SDMetrics' library. Inspired by the Python 'SDV' (Synthetic Data
Vault) library by 'DataCebo'; see Patki, Wedge and Veeramachaneni
(2016) "The Synthetic Data Vault" <doi:10.1109/DSAA.2016.49>.

Kailas Venkitasubramanian

rsdv

Synthetic Tabular Data Generation with Gaussian Copulas

set_column_type function

<dl><dt>meta</dt>
<dd>An <code>rsdv_metadata</code> object.</dd>
<dt>column</dt>
<dd>Column name (character).</dd>
<dt>type</dt>
<dd>One of <code>"numerical"</code>, <code>"categorical"</code>, <code>"boolean"</code>,
<code>"datetime"</code>, <code>"id"</code>.
For categorical columns the level order used by the synthesizer follows
the input: a <code>factor</code> keeps its <code><a href="/link/levels()?package=rsdv&version=0.2.0" data-mini-rdoc="rsdv::levels()">levels()</a></code> order (including ordered
factors), while a plain character column gets a sorted unique-value order
for determinism. The sort is lexicographic, so numeric-like character
columns (<code>c("2", "10")</code>) come back ordered <code>"10", "2"</code>. Coerce these to
<code>factor</code> with the desired level order before fitting if order matters.</dd></dl>

Arguments

Set the type of a column in metadata — set_column_type

<dl>

<dt>meta</dt>
<dd>An <code>rsdv_metadata</code> object.</dd>


<dt>column</dt>
<dd>Column name (character).</dd>


<dt>type</dt>
<dd>One of <code>"numerical"</code>, <code>"categorical"</code>, <code>"boolean"</code>,
<code>"datetime"</code>, <code>"id"</code>.
For categorical columns the level order used by the synthesizer follows
the input: a <code>factor</code> keeps its <code><a href='https://rdrr.io/r/base/levels.html'>levels()</a></code> order (including ordered
factors), while a plain character column gets a sorted unique-value order
for determinism. The sort is lexicographic, so numeric-like character
columns (<code>c("2", "10")</code>) come back ordered <code>"10", "2"</code>. Coerce these to
<code>factor</code> with the desired level order before fitting if order matters.</dd>

</dl>

set_column_type: Set the type of a column in metadata

Description

Usage

Value

Arguments

Examples