validate_train_ctrl_sum_fun: Validate 'trainControl' summary function

In haukelicht/politicaltweets: Classify political tweets

Validate trainControl summary function

Description

Internal helper to classify_tweets

Usage

validate_train_ctrl_sum_fun(fun, levs, metric)

Arguments

fun	summary function, needs to conform to caret standards see ?twoClassSummary
levs	character with two elements, specifying outcome classes
metric	evaluation metric expected in fun's return object

Value

a list with elements "result" (unit-length logical) and "message" (character)

Examples

## Not run: 
library(caret)
# returns "result" FALSE and a "message"
validate_train_ctrl_sum_fun(twoClassSummary, c("yes", "no"), "A")
# returns "result" TRUE and no "message"
validate_train_ctrl_sum_fun(twoClassSummary, c("yes", "no"), "ROC")

## End(Not run)

haukelicht/politicaltweets documentation built on July 3, 2023, 4:11 a.m.