unload_uwot: Unload a Model

In uwot: The Uniform Manifold Approximation and Projection (UMAP) Method for Dimensionality Reduction

Unload a Model

Description

Unloads the UMAP model. This prevents the model being used with umap_transform, but allows the temporary working directory associated with saving or loading the model to be removed.

Usage

unload_uwot(model, cleanup = TRUE, verbose = FALSE)

Arguments

model	a UMAP model create by umap.
cleanup	if TRUE, attempt to delete the temporary working directory that was used in either the save or load of the model.
verbose	if TRUE, log information to the console.

See Also

save_uwot, load_uwot

Examples

iris_train <- iris[c(1:10, 51:60), ]
iris_test <- iris[100:110, ]

# create model
model <- umap(iris_train, ret_model = TRUE, n_epochs = 20)

# save without unloading: this leaves behind a temporary working directory
model_file <- tempfile("iris_umap")
model <- save_uwot(model, file = model_file)

# The model can continue to be used
test_embedding <- umap_transform(iris_test, model)

# To manually unload the model from memory when finished and to clean up
# the working directory (this doesn't touch your model file)
unload_uwot(model)

# At this point, model cannot be used with umap_transform, this would fail:
# test_embedding2 <- umap_transform(iris_test, model)

# restore the model: this also creates a temporary working directory
model2 <- load_uwot(file = model_file)
test_embedding2 <- umap_transform(iris_test, model2)

# Unload and clean up the loaded model temp directory
unload_uwot(model2)

# clean up the model file
unlink(model_file)

# save with unloading: this deletes the temporary working directory but
# doesn't allow the model to be re-used
model3 <- umap(iris_train, ret_model = TRUE, n_epochs = 20)
model_file3 <- tempfile("iris_umap")
model3 <- save_uwot(model3, file = model_file3, unload = TRUE)

uwot documentation built on July 9, 2023, 7:14 p.m.