8be2cd8c91
* Enable loading model from <1.0.0 trained with objective='binary:logitraw' * Add binary:logitraw in model compatibility testing suite * Feedback from @trivialfis: Override ProbToMargin() for LogisticRaw Co-authored-by: Jiaming Yuan <jm.yuan@outlook.com> Co-authored-by: Philip Hyunsu Cho <chohyu01@cs.washington.edu>
110 lines
4.7 KiB
R
110 lines
4.7 KiB
R
require(xgboost)
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require(jsonlite)
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context("Models from previous versions of XGBoost can be loaded")
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metadata <- list(
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kRounds = 2,
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kRows = 1000,
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kCols = 4,
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kForests = 2,
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kMaxDepth = 2,
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kClasses = 3
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)
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run_model_param_check <- function (config) {
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testthat::expect_equal(config$learner$learner_model_param$num_feature, '4')
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testthat::expect_equal(config$learner$learner_train_param$booster, 'gbtree')
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}
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get_num_tree <- function (booster) {
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dump <- xgb.dump(booster)
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m <- regexec('booster\\[[0-9]+\\]', dump, perl = TRUE)
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m <- regmatches(dump, m)
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num_tree <- Reduce('+', lapply(m, length))
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return (num_tree)
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}
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run_booster_check <- function (booster, name) {
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# If given a handle, we need to call xgb.Booster.complete() prior to using xgb.config().
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if (inherits(booster, "xgb.Booster") && xgboost:::is.null.handle(booster$handle)) {
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booster <- xgb.Booster.complete(booster)
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}
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config <- jsonlite::fromJSON(xgb.config(booster))
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run_model_param_check(config)
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if (name == 'cls') {
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testthat::expect_equal(get_num_tree(booster),
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metadata$kForests * metadata$kRounds * metadata$kClasses)
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testthat::expect_equal(as.numeric(config$learner$learner_model_param$base_score), 0.5)
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testthat::expect_equal(config$learner$learner_train_param$objective, 'multi:softmax')
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testthat::expect_equal(as.numeric(config$learner$learner_model_param$num_class),
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metadata$kClasses)
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} else if (name == 'logitraw') {
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testthat::expect_equal(get_num_tree(booster), metadata$kForests * metadata$kRounds)
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testthat::expect_equal(as.numeric(config$learner$learner_model_param$num_class), 0)
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testthat::expect_equal(config$learner$learner_train_param$objective, 'binary:logitraw')
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} else if (name == 'logit') {
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testthat::expect_equal(get_num_tree(booster), metadata$kForests * metadata$kRounds)
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testthat::expect_equal(as.numeric(config$learner$learner_model_param$num_class), 0)
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testthat::expect_equal(config$learner$learner_train_param$objective, 'binary:logistic')
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} else if (name == 'ltr') {
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testthat::expect_equal(get_num_tree(booster), metadata$kForests * metadata$kRounds)
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testthat::expect_equal(config$learner$learner_train_param$objective, 'rank:ndcg')
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} else {
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testthat::expect_equal(name, 'reg')
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testthat::expect_equal(get_num_tree(booster), metadata$kForests * metadata$kRounds)
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testthat::expect_equal(as.numeric(config$learner$learner_model_param$base_score), 0.5)
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testthat::expect_equal(config$learner$learner_train_param$objective, 'reg:squarederror')
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}
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}
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test_that("Models from previous versions of XGBoost can be loaded", {
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bucket <- 'xgboost-ci-jenkins-artifacts'
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region <- 'us-west-2'
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file_name <- 'xgboost_r_model_compatibility_test.zip'
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zipfile <- file.path(getwd(), file_name)
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model_dir <- file.path(getwd(), 'models')
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download.file(paste('https://', bucket, '.s3-', region, '.amazonaws.com/', file_name, sep = ''),
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destfile = zipfile, mode = 'wb', quiet = TRUE)
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unzip(zipfile, overwrite = TRUE)
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pred_data <- xgb.DMatrix(matrix(c(0, 0, 0, 0), nrow = 1, ncol = 4))
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lapply(list.files(model_dir), function (x) {
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model_file <- file.path(model_dir, x)
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m <- regexec("xgboost-([0-9\\.]+)\\.([a-z]+)\\.[a-z]+", model_file, perl = TRUE)
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m <- regmatches(model_file, m)[[1]]
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model_xgb_ver <- m[2]
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name <- m[3]
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is_rds <- endsWith(model_file, '.rds')
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cpp_warning <- capture.output({
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# Expect an R warning when a model is loaded from RDS and it was generated by version < 1.1.x
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if (is_rds && compareVersion(model_xgb_ver, '1.1.1.1') < 0) {
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booster <- readRDS(model_file)
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expect_warning(predict(booster, newdata = pred_data))
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expect_warning(run_booster_check(booster, name))
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} else {
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if (is_rds) {
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booster <- readRDS(model_file)
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} else {
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booster <- xgb.load(model_file)
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}
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predict(booster, newdata = pred_data)
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run_booster_check(booster, name)
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}
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})
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if (compareVersion(model_xgb_ver, '1.0.0.0') < 0) {
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# Expect a C++ warning when a model was generated in version < 1.0.x
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m <- grepl(paste0('.*Loading model from XGBoost < 1\\.0\\.0, consider saving it again for ',
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'improved compatibility.*'), cpp_warning, perl = TRUE)
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expect_true(length(m) > 0 && all(m))
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} else if (is_rds && model_xgb_ver == '1.1.1.1') {
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# Expect a C++ warning when a model is loaded from RDS and it was generated by version 1.1.x
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m <- grepl(paste0('.*Attempted to load internal configuration for a model file that was ',
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'generated by a previous version of XGBoost.*'), cpp_warning, perl = TRUE)
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expect_true(length(m) > 0 && all(m))
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}
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})
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})
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