Skip to content
Permalink
master
Switch branches/tags

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
Go to file
 
 
Cannot retrieve contributors at this time
library(data.table)
train <- fread('train.csv')
test <- fread('test.csv')
# consolidate the 2 data sets after creating a variable indicating train / test
train$flag <- 0; test$flag <- 1
dat <- rbind(train,test)
# change outcome, var2 and var5 into factor var
dat$outcome <- factor(dat$outcome)
dat$var_b <- factor(dat$var_b)
dat$var_e <- factor(dat$var_e)
# get back the train and test data
train <- subset(dat, flag == 0); test <- subset(dat, flag == 1)
train$flag <- NULL; test$flag <- NULL
# Build Logit Model using train data
logitModel <- glm(outcome ~ ., data = train, family = 'binomial')
# Model Predictions on train data
preds_train <- predict(logitModel, type = 'response')
# Model Predictions on test data
preds_test <- predict(logitModel, newdata = test, type = 'response')
# running the above code gives us the following error:
# factor var2 has new levels 16060, 17300, 17980, 19060, 21420, 21820,
# 25220, 29340, 30300, 33260, 34100, 38340, 39660, 44300, 45460
# Workaround:
source('remove_missing_levels.R')
preds_test <- predict(logitModel,
newdata = remove_missing_levels(fit = logitModel, test_data = test),
type = 'response')