Java library and command-line application for converting H2O.ai models to PMML.
- Supported MOJO types:
DrfMojoModel
GbmMojoModel
GlmMojoModel
GlmMultinomialMojoModel
StackedEnsembleMojoModel
XGBoostJavaMojoModel
XGBoostNativeMojoModel
- H2O 3.16.0 or newer
- Java 1.8 or newer
Enter the project root directory and build using Apache Maven:
mvn clean install
The build produces an executable uber-JAR file target/jpmml-h2o-executable-1.0-SNAPSHOT.jar
.
A typical workflow can be summarized as follows:
- Use H2O to train a model.
- Download the model in Model ObJect, Optimized (MOJO) data format to a file in a local filesystem.
- Use the JPMML-H2O command-line converter application to turn the MOJO file to a PMML file.
Using the h2o
package to train a regression model for the example Boston housing dataset:
from h2o import H2OFrame
from h2o.estimators.glm import H2OGeneralizedLinearEstimator
from pandas import DataFrame, Series
from sklearn.datasets import load_boston
import h2o
import pandas
boston = load_boston()
df = pandas.concat((DataFrame(data = boston.data, columns = boston.feature_names), Series(boston.target, name = "MEDV")), axis = 1)
h2o.connect()
df = H2OFrame(df)
glm = H2OGeneralizedLinearEstimator(family = "gaussian")
glm.train(boston.feature_names.tolist(), "MEDV", df)
glm.download_mojo(path = "mojo.zip")
Converting the MOJO file mojo.zip
to a PMML file mojo.pmml
:
java -jar target/jpmml-h2o-executable-1.0-SNAPSHOT.jar --mojo-input mojo.zip --pmml-output mojo.pmml
Getting help:
java -jar target/jpmml-h2o-executable-1.0-SNAPSHOT.jar --help
JPMML-H2O is dual-licensed under the GNU Affero General Public License (AGPL) version 3.0, and a commercial license.
JPMML-H2O is developed and maintained by Openscoring Ltd, Estonia.
Interested in using JPMML software in your application? Please contact [email protected]