calculate_stability

Calculates the intensional stability of each concept.
Calculates the intensional stability of each concept in the lattice directly from the sparse matrix representation.
Stability measures the probability that a concept is preserved when a random subset of objects is removed.

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_stability function

<dl><dt>extents</dt>
<dd>A <code>SparseSet</code> object or a sparse matrix (<code>CsparseMatrix</code>) representing concept extents (columns are concepts).</dd></dl>

Arguments

Calculate Concept Stability — calculate_stability

<dl>

<dt>extents</dt>
<dd>A <code>SparseSet</code> object or a sparse matrix (<code>CsparseMatrix</code>) representing concept extents (columns are concepts).</dd>

</dl>

calculate_stability: Calculate Concept Stability

Description

Usage

Value

Arguments