calculate_density

Calculates the density of each concept in the original matrix I.

Provides tools to perform fuzzy formal concept analysis, presented in Wille (1982) <doi:10.1007/978-3-642-01815-2_23> and in Ganter and Obiedkov (2016) <doi:10.1007/978-3-662-49291-8>. It provides functions to load and save a formal context, extract its concept lattice and implications. In addition, one can use the implications to compute semantic closures of fuzzy sets and, thus, build recommendation systems. Matrix factorization is provided by the GreConD+ algorithm (Belohlavek and Trneckova, 2024 <doi:10.1109/TFUZZ.2023.3330760>).

Domingo Lopez Rodriguez

fcaR

Formal Concept Analysis

Angel Mora

Jesus Dominguez

Ana Villalon

calculate_density function

<dl><dt>extents</dt>
<dd>A <code>SparseSet</code> or <code>CsparseMatrix</code> of extents.</dd>
<dt>intents</dt>
<dd>A <code>SparseSet</code> or <code>CsparseMatrix</code> of intents.</dd>
<dt>I</dt>
<dd>The original numeric matrix (FormalContext$I).</dd></dl>

Arguments

Calculate Fuzzy Density — calculate_density

<dl>

<dt>extents</dt>
<dd>A <code>SparseSet</code> or <code>CsparseMatrix</code> of extents.</dd>


<dt>intents</dt>
<dd>A <code>SparseSet</code> or <code>CsparseMatrix</code> of intents.</dd>


<dt>I</dt>
<dd>The original numeric matrix (FormalContext$I).</dd>

</dl>

calculate_density: Calculate Fuzzy Density

Description

Usage

Value

Arguments