| /* |
| * 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.examples.ml.inference.xgboost; |
| |
| import java.io.File; |
| import java.io.FileNotFoundException; |
| import java.util.HashMap; |
| import java.util.Scanner; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.Future; |
| import org.apache.ignite.Ignite; |
| import org.apache.ignite.Ignition; |
| import org.apache.ignite.internal.util.IgniteUtils; |
| import org.apache.ignite.ml.inference.Model; |
| import org.apache.ignite.ml.inference.builder.AsyncModelBuilder; |
| import org.apache.ignite.ml.inference.builder.IgniteDistributedModelBuilder; |
| import org.apache.ignite.ml.inference.reader.FileSystemModelReader; |
| import org.apache.ignite.ml.inference.reader.ModelReader; |
| import org.apache.ignite.ml.math.primitives.vector.NamedVector; |
| import org.apache.ignite.ml.math.primitives.vector.VectorUtils; |
| import org.apache.ignite.ml.xgboost.parser.XGModelParser; |
| |
| /** |
| * This example demonstrates how to import XGBoost model and use imported model for distributed inference in Apache |
| * Ignite. |
| */ |
| public class XGBoostModelParserExample { |
| /** |
| * Test model resource name. |
| */ |
| private static final String TEST_MODEL_RES = "examples/src/main/resources/models/xgboost/agaricus-model.txt"; |
| |
| /** |
| * Test data. |
| */ |
| private static final String TEST_DATA_RES = "examples/src/main/resources/datasets/agaricus-test-data.txt"; |
| |
| /** |
| * Test expected results. |
| */ |
| private static final String TEST_ER_RES = "examples/src/main/resources/datasets/agaricus-test-expected-results.txt"; |
| |
| /** |
| * Parser. |
| */ |
| private static final XGModelParser parser = new XGModelParser(); |
| |
| /** |
| * Run example. |
| */ |
| public static void main(String... args) throws ExecutionException, InterruptedException, FileNotFoundException { |
| try (Ignite ignite = Ignition.start("examples/config/example-ignite.xml")) { |
| File mdlRsrc = IgniteUtils.resolveIgnitePath(TEST_MODEL_RES); |
| if (mdlRsrc == null) |
| throw new IllegalArgumentException("File not found [resource_path=" + TEST_MODEL_RES + "]"); |
| |
| ModelReader reader = new FileSystemModelReader(mdlRsrc.getPath()); |
| |
| AsyncModelBuilder mdlBuilder = new IgniteDistributedModelBuilder(ignite, 4, 4); |
| |
| File testData = IgniteUtils.resolveIgnitePath(TEST_DATA_RES); |
| if (testData == null) |
| throw new IllegalArgumentException("File not found [resource_path=" + TEST_DATA_RES + "]"); |
| |
| File testExpRes = IgniteUtils.resolveIgnitePath(TEST_ER_RES); |
| if (testExpRes == null) |
| throw new IllegalArgumentException("File not found [resource_path=" + TEST_ER_RES + "]"); |
| |
| try (Model<NamedVector, Future<Double>> mdl = mdlBuilder.build(reader, parser); |
| Scanner testDataScanner = new Scanner(testData); |
| Scanner testExpResultsScanner = new Scanner(testExpRes)) { |
| |
| while (testDataScanner.hasNextLine()) { |
| String testDataStr = testDataScanner.nextLine(); |
| String testExpResultsStr = testExpResultsScanner.nextLine(); |
| |
| HashMap<String, Double> testObj = new HashMap<>(); |
| |
| for (String keyValueString : testDataStr.split(" ")) { |
| String[] keyVal = keyValueString.split(":"); |
| |
| if (keyVal.length == 2) |
| testObj.put("f" + keyVal[0], Double.parseDouble(keyVal[1])); |
| } |
| |
| double prediction = mdl.predict(VectorUtils.of(testObj)).get(); |
| |
| double expPrediction = Double.parseDouble(testExpResultsStr); |
| |
| System.out.println("Expected: " + expPrediction + ", prediction: " + prediction); |
| } |
| } |
| } |
| finally { |
| System.out.flush(); |
| } |
| } |
| } |