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Set global R seed inside setup #307

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Dec 30, 2024
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Set global R seed inside setup #307

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7 changes: 7 additions & 0 deletions R/setup.R
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Expand Up @@ -57,6 +57,13 @@ if (knitr::is_html_output() || knitr::is_latex_output()) {
}
assign(params_obj_name, read_yaml(here("params.yaml")))

# Set the random seed for reproducibility. This is currently used in two places:
# 1. Within Tidymodels workflows whenever sampling is used e.g. for KNN impute
# 2. Within the CV loop to make random folds that are consistent across runs
# Note that LightGBM uses its own set of seeds i.e. this seed doesn't affect
# whether the model itself is deterministic
set.seed(get(params_obj_name)$model$seed)

# Get the number of available physical cores to use for multi-threading
# Lightgbm docs recommend using only real cores, not logical
# https://lightgbm.readthedocs.io/en/latest/Parameters.html#num_threads
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