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I'm trying to tune sample_size for Catboost but it gives an error:
library(modeltime)
library(treesnip)
#> Loading required package: parsnip
library(tidyverse)
library(tidymodels)
#> Registered S3 method overwritten by 'tune':
#> method from
#> required_pkgs.model_spec parsnip
library(timetk)
library(catboost)
m750_lag <- m750 %>%
tk_augment_lags(value, .lags = 1:2)
resamples_kfold <- vfold_cv(m750_lag, v = 3)
recipe_spec <- recipe(value ~ ., data = m750_lag) %>%
update_role(date, new_role = "indicator")
model_spec_catboost <- boost_tree(
mode = "regression",
trees = tune(),
min_n = tune(),
tree_depth = tune(),
learn_rate = tune(),
sample_size = tune()
) %>%
set_engine("catboost")
wflw_catboost <- workflow() %>%
add_model(model_spec_catboost) %>%
add_recipe(recipe_spec)
grid_latin_hypercube(wflw_catboost)
#> # A tibble: 3 x 4
#> trees min_n tree_depth learn_rate
#> <int> <int> <int> <dbl>
#> 1 315 22 5 0.0188
#> 2 1245 4 13 0.00000000648
#> 3 1421 34 8 0.0000360
catboost_tuned <- tune_grid(
object = wflw_catboost,
resamples = resamples_kfold,
param_info = parameters(wflw_catboost) %>%
update(sample_size = sample_prop(range = c(0, 1))),
grid = 3,
control = control_grid(verbose = TRUE)
)
#> Error: At least one parameter does not match any id's in the set: 'sample_size'
Created on 2021-09-11 by the reprex package (v2.0.1)
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