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TST: Added test for xgb.importance

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terrytangyuan 2015-09-07 21:48:57 -04:00
parent 78afd6c772
commit d833038ba1
1 changed files with 17 additions and 7 deletions
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24
R-package/tests/testthat/test_helpers.R
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@ -1,17 +1,27 @@
context('Test helper functions') context('Test helper functions')
require(xgboost) require(xgboost)
require(data.table)
require(Matrix)
require(vcd)
data(Arthritis)
data(agaricus.train, package='xgboost') data(agaricus.train, package='xgboost')
data(agaricus.test, package='xgboost') df <- data.table(Arthritis, keep.rownames = F)
train <- agaricus.train df[,AgeDiscret:= as.factor(round(Age/10,0))]
test <- agaricus.test df[,AgeCat:= as.factor(ifelse(Age > 30, "Old", "Young"))]
df[,ID:=NULL]
sparse_matrix = sparse.model.matrix(Improved~.-1, data = df)
output_vector = df[,Y:=0][Improved == "Marked",Y:=1][,Y]
bst <- xgboost(data = sparse_matrix, label = output_vector, max.depth = 9,
eta = 1, nthread = 2, nround = 10,objective = "binary:logistic")
bst <- xgboost(data = train$data, label = train$label, max.depth = 2,
eta = 1, nthread = 2, nround = 2,objective = "binary:logistic")
test_that("dump works", { test_that("xgb.dump works", {
capture.output(print(xgb.dump(bst))) capture.output(print(xgb.dump(bst)))
}) })
test_that("xgb.importance works", {
xgb.dump(bst, 'xgb.model.dump', with.stats = T)
importance <- xgb.importance(sparse_matrix@Dimnames[[2]], 'xgb.model.dump')
})