ConceptSet: R6 class for a set of concepts

ConceptSetR Documentation

R6 class for a set of concepts

Description

This class implements the data structure and methods for concept sets.

Methods

Public methods


Method new()

Create a new ConceptLattice object.

Usage
ConceptSet$new(extents, intents, objects, attributes, I = NULL)
Arguments
extents

(dgCMatrix) The extents of all concepts

intents

(dgCMatrix) The intents of all concepts

objects

(character vector) Names of the objects in the formal context

attributes

(character vector) Names of the attributes in the formal context

I

(dgCMatrix) The matrix of the formal context

Returns

A new ConceptLattice object.


Method size()

Size of the Lattice

Usage
ConceptSet$size()
Returns

The number of concepts in the lattice.


Method is_empty()

Is the lattice empty?

Usage
ConceptSet$is_empty()
Returns

TRUE if the lattice has no concepts.


Method extents()

Concept Extents

Usage
ConceptSet$extents()
Returns

The extents of all concepts, as a dgCMatrix.


Method intents()

Concept Intents

Usage
ConceptSet$intents()
Returns

The intents of all concepts, as a dgCMatrix.


Method print()

Print the Concept Set

Usage
ConceptSet$print()
Returns

Nothing, just prints the concepts


Method to_latex()

Write in LaTeX

Usage
ConceptSet$to_latex(print = TRUE, ncols = 1, numbered = TRUE, align = TRUE)
Arguments
print

(logical) Print to output?

ncols

(integer) Number of columns of the output.

numbered

(logical) Number the concepts?

align

(logical) Align objects and attributes independently?

Returns

The LaTeX code to list all concepts.


Method to_list()

Returns a list with all the concepts

Usage
ConceptSet$to_list()
Returns

A list of concepts.


Method [()

Subsets a ConceptSet

Usage
ConceptSet$[(indices)
Arguments
indices

(numeric or logical vector) The indices of the concepts to return as a list of Concepts. It can be a vector of logicals where TRUE elements are to be retained.

Returns

Another ConceptSet.


Method sub()

Individual Concepts

Usage
ConceptSet$sub(index)
Arguments
index

(numeric) The index of the concept to return.

Returns

The Concept.


Method support()

Get support of each concept

Usage
ConceptSet$support()
Returns

A vector with the support of each concept.


Method clone()

The objects of this class are cloneable with this method.

Usage
ConceptSet$clone(deep = FALSE)
Arguments
deep

Whether to make a deep clone.

Examples

# Build a formal context
fc_planets <- FormalContext$new(planets)

# Find the concepts
fc_planets$find_concepts()

# Find join- and meet- irreducible elements
fc_planets$concepts$join_irreducibles()
fc_planets$concepts$meet_irreducibles()



neuroimaginador/fcaR documentation built on June 17, 2022, 7:08 a.m.