For this engine, there is a single mode: classification
This model has 1 tuning parameter:
Laplace
: Laplace Correction (type: double, default: 0.0)[h2o::h2o.naiveBayes()] provides several engine arguments to deal with imbalances and rare classes:
balance_classes
A logical value controlling over/under-sampling (for imbalanced data). Defaults to FALSE
.
class_sampling_factors
The over/under-sampling ratios per class (in lexicographic order). If not specified, sampling factors will be automatically computed to obtain class balance during training. Require balance_classes
to be TRUE
.
min_sdev
: The minimum standard deviation to use for observations without enough data, must be greater than 1e-10.
min_prob
: The minimum probability to use for observations with not enough data.
The agua extension package is required to fit this model.
[agua::h2o_train_nb()] is a wrapper around [h2o::h2o.naiveBayes()].
naive_Bayes(Laplace = numeric(0)) %>%
set_engine("h2o") %>%
translate()
## Naive Bayes Model Specification (classification)
##
## Main Arguments:
## Laplace = numeric(0)
##
## Computational engine: h2o
##
## Model fit template:
## agua::h2o_train_nb(x = missing_arg(), y = missing_arg(), weights = missing_arg(),
## validation_frame = missing_arg(), laplace = numeric(0))
To use the h2o engine with tidymodels, please run h2o::h2o.init()
first. By default, This connects R to the local h2o server. This needs to be done in every new R session. You can also connect to a remote h2o server with an IP address, for more details see [h2o::h2o.init()].
You can control the number of threads in the thread pool used by h2o with the nthreads
argument. By default, it uses all CPUs on the host. This is different from the usual parallel processing mechanism in tidymodels for tuning, while tidymodels parallelizes over resamples, h2o parallelizes over hyperparameter combinations for a given resample.
h2o will automatically shut down the local h2o instance started by R when R is terminated. To manually stop the h2o server, run h2o::h2o.shutdown()
.
Models fitted with this engine may require native serialization methods to be properly saved and/or passed between R sessions. To learn more about preparing fitted models for serialization, see the bundle package.
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.