calculate_grades

Calculates the grade (level) of each concept using the longest path
from the bottom element. This is a fast C++ implementation.

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_grades function

<dl><dt>concept_ids</dt>
<dd>A vector of concept IDs (integers).</dd>
<dt>edge_from</dt>
<dd>A vector of source concept IDs from the cover relation (Hasse diagram).</dd>
<dt>edge_to</dt>
<dd>A vector of target concept IDs from the cover relation (Hasse diagram).</dd></dl>

Arguments

Calculate Concept Grades (Levels) — calculate_grades

<dl>

<dt>concept_ids</dt>
<dd>A vector of concept IDs (integers).</dd>


<dt>edge_from</dt>
<dd>A vector of source concept IDs from the cover relation (Hasse diagram).</dd>


<dt>edge_to</dt>
<dd>A vector of target concept IDs from the cover relation (Hasse diagram).</dd>

</dl>

calculate_grades: Calculate Concept Grades (Levels)

Description

Usage

Value

Arguments