Skip to content
Java library and command-line application for converting CatBoost models to PMML
Branch: master
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Type Name Latest commit message Commit time
Failed to load latest commit information.


Java library and command-line application for converting CatBoost models to PMML.


  • CatBoost 0.15.2 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-catboost-executable-1.0-SNAPSHOT.jar.


A typical workflow can be summarized as follows:

  1. Use CatBoost to train a model.
  2. Save the model to a CBM file in a local filesystem.
  3. Use the JPMML-CatBoost command-line converter application to turn this CBM file to a PMML file.

The CatBoost side of operations

Using the catboost package to train a regression model for the example Boston housing dataset:

from pandas import DataFrame, Series
from sklearn.datasets import load_boston

boston = load_boston()

X = DataFrame(, columns = boston.feature_names)
y = Series(

from catboost import CatBoostRegressor

cb = CatBoostRegressor(iterations = 131), y)

cb.save_model("catboost.cbm", format = "cbm")

The JPMML-CatBoost side of operations

Converting the CBM file catboost.cbm to a PMML file catboost.pmml:

java -jar target/jpmml-catboost-executable-1.0-SNAPSHOT.jar --cbm-input catboost.cbm --pmml-output catboost.pmml

Getting help:

java -jar target/jpmml-catboost-executable-1.0-SNAPSHOT.jar --help


JPMML-CatBoost is dual-licensed under the GNU Affero General Public License (AGPL) version 3.0, and a commercial license.

Additional information

JPMML-CatBoost is developed and maintained by Openscoring Ltd, Estonia.

Interested in using JPMML software in your application? Please contact

You can’t perform that action at this time.