ejem: Drive concepts for motorcars.

In corybrunson/context: Produce formal contexts (binary matrices) from data

Description

This many-valued context is adapted from an example of conceptual scaling.

Usage

ejem

Format

A many-valued context, stored as a data frame.

De

drive efficiency empty

Dl

drive efficiency loaded

R

road holding/handling properties

S

self-steering effect

E

economy of space

C

cost of construction

M

maintainability

Source

Ganter, B. and Wille, R. (2005) Formal Concept Analysis: Mathematical Foundations http://www.springer.com/us/book/9783540627715

Examples

# scale all variables using nominal standard scales
data(ejem)
variables <- colnames(ejem)
ejem_scale <- scale_by_variables(ejem,
                                 vars = variables,
                                 scales = as.list(rep('nominal',
                                                      length(variables))))
rownames(ejem_scale) <- rownames(ejem)
print(ejem_scale)

corybrunson/context documentation built on May 13, 2019, 10:52 p.m.