oldmixmodPredict: Create an instance of the ['MixmodPredict'] class

In Rmixmod: Classification with Mixture Modelling

Create an instance of the [MixmodPredict] class

Description

This function computes the second step of a discriminant analysis. The aim of this step is to assign remaining observations to one of the groups.

Usage

oldmixmodPredict(data, classificationRule, ...)

Arguments

data	matrix or data frame containing quantitative,qualitative or composite data. Rows correspond to observations and columns correspond to variables.
classificationRule	a [MixmodResults] object which contains the classification rule computed in the mixmodLearn() or mixmodCluster() step.
...	...

Value

Returns an instance of the [MixmodPredict] class which contains predicted partition and probabilities.

Author(s)

Florent Langrognet and Remi Lebret and Christian Poli ans Serge Iovleff, with contributions from C. Biernacki and G. Celeux and G. Govaert [e-mail]

Examples

# start by extract 10 observations from iris data set
remaining.obs <- sample(1:nrow(iris), 10)
# then run a mixmodLearn() analysis without those 10 observations
learn <- mixmodLearn(iris[-remaining.obs, 1:4], iris$Species[-remaining.obs])
# create a MixmodPredict to predict those 10 observations
prediction <- mixmodPredict(
  data = iris[remaining.obs, 1:4],
  classificationRule = learn["bestResult"]
)
# show results
prediction
# compare prediction with real results
paste("accuracy= ", mean(as.integer(iris$Species[remaining.obs]) == prediction["partition"]) * 100,
  "%",
  sep = ""
)

## A composite example with a heterogeneous data set
data(heterodatatrain)
## Learning with training data
learn <- mixmodLearn(heterodatatrain[-1], knownLabels = heterodatatrain$V1)

Rmixmod documentation built on May 29, 2024, 7:32 a.m.