mrk-andreev commented on a change in pull request #8489: URL: https://github.com/apache/ignite/pull/8489#discussion_r535933385
########## File path: modules/ml/catboost-model-parser/src/main/java/org/apache/ignite/ml/catboost/CatboostRegressionModel.java ########## @@ -0,0 +1,71 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.ignite.ml.catboost; + +import ai.catboost.CatBoostError; +import ai.catboost.CatBoostModel; +import org.apache.ignite.ml.inference.Model; +import org.apache.ignite.ml.math.primitives.vector.NamedVector; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * CatboostRegressionModel imported and wrapped to be compatible with Apache Ignite infrastructure. + */ +public class CatboostRegressionModel implements Model<NamedVector, Double> { + /** Logger. */ + private static final Logger logger = LoggerFactory.getLogger(CatboostRegressionModel.class); + + /** Catboost model. */ + private final CatBoostModel model; + + /** + * Constructs a new instance of Catboost model wrapper. + * + * @param model Catboost Model + */ + public CatboostRegressionModel(CatBoostModel model) { + this.model = model; + } + + /** {@inheritDoc} */ + @Override public Double predict(NamedVector input) { + float[] floatInput = new float[input.size()]; + int index = 0; + for (String key: model.getFeatureNames()) { + floatInput[index] = (float) input.get(key); + index++; + } + + try { + return model.predict(floatInput, model.getFeatureNames()).get(0, 0); + } catch (CatBoostError e) { + throw new RuntimeException(e.getMessage()); + } + } + + /** {@inheritDoc} */ + @Override public void close() { + try { + model.close(); + } catch (CatBoostError e) { + logger.error(e.getMessage()); + } + } + Review comment: Fixed ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
