general.indexes: general.indexes

In PROMiDAT/trainR: Predictive (Classification and Regression) Models Homologator

general.indexes

Description

Calculates the confusion matrix, overall accuracy, overall error and the category accuracy for a classification problem and the Root Mean Square Error, Mean Absolute Error, Relative Error and Correlation for a regression problem.

Usage

general.indexes(newdata, prediction, mc = NULL)

Arguments

newdata	matrix or data frame of test data.
prediction	a prmdt prediction object.
mc	(optional) a matrix for calculating the indices. If mc is entered as parameter newdata and prediction are not necessary.

Value

A list with the appropiate error and precision measurement. The class of this list is indexes.prmdt

Examples

# Classification
data("iris")

n <- seq_len(nrow(iris))
.sample <- sample(n, length(n) * 0.75)
data.train <- iris[.sample,]
data.test <- iris[-.sample,]

modelo.knn <- train.knn(Species~., data.train)
prediccion <- predict(modelo.knn, data.test, type = "class")
general.indexes(data.test, prediccion)

# Regression
len <- nrow(swiss)
sampl <- sample(x = 1:len,size = len*0.20,replace = FALSE)
ttesting <- swiss[sampl,]
ttraining <- swiss[-sampl,]
model.knn <- train.knn(Infant.Mortality~.,ttraining)
prediccion <- predict(model.knn, ttesting)
prediccion
general.indexes(ttesting, prediccion)

PROMiDAT/trainR documentation built on Sept. 13, 2022, 7:26 a.m.