qca_extract

Internal helper to obtain the solution expression, consistency
(<code>inclS</code>) and coverage (<code>covS</code>) from an object returned by
<code>QCA::minimize()</code>.

internal

Provides threshold sweep methods for Qualitative Comparative
Analysis (QCA). Implements Condition Threshold Sweep-Single (CTS-S),
Condition Threshold Sweep-Multiple (CTS-M), Outcome Threshold Sweep (OTS),
and Dual Threshold Sweep (DTS) for systematic exploration of threshold
calibration effects on crisp-set QCA results. These methods extend
traditional robustness approaches by treating threshold variation as an
exploratory tool for discovering causal structures. Built on top of the
'QCA' package by Dusa (2019) <doi:10.1007/978-3-319-75668-4>, with function
arguments following 'QCA' conventions. Based on set-theoretic methods by
Ragin (2008) <doi:10.7208/chicago/9780226702797.001.0001> and established
robustness protocols by Rubinson et al. (2019)
<doi:10.1177/00491241211036158>.

Yuki Toyoda

TSQCA

Threshold Sweep Extensions for Qualitative Comparative Analysis

Japan Society for the Promotion of Science 

qca_extract function

<dl><dt>sol</dt>
<dd>A solution object returned by <code>QCA::minimize()</code>.</dd>
<dt>extract_mode</dt>
<dd>Character. How to handle multiple intermediate solutions:<ul>
<li><code>"first"</code> - return only the first solution (M1). Default.</li>
<li><code>"all"</code> - return all solutions concatenated.</li>
<li><code>"essential"</code> - return essential prime implicants (terms 
 common to all solutions), plus selective prime implicants and 
 solution count.</li>
</ul></dd></dl>

Arguments

Extract solution information from a QCA minimization result — qca_extract

<dl>

<dt>sol</dt>
<dd>A solution object returned by <code>QCA::minimize()</code>.</dd>


<dt>extract_mode</dt>
<dd>Character. How to handle multiple intermediate solutions:<ul>
<li><code>"first"</code> - return only the first solution (M1). Default.</li>
<li><code>"all"</code> - return all solutions concatenated.</li>
<li><code>"essential"</code> - return essential prime implicants (terms 
 common to all solutions), plus selective prime implicants and 
 solution count.</li>
</ul></dd>

</dl>

qca_extract: Extract solution information from a QCA minimization result

Description

Usage

Value

Arguments