IGNITE-8907: [ML] Using vectors in featureExtractor
[ignite.git] / modules / ml / src / test / java / org / apache / ignite / ml / preprocessing / imputing / ImputerPreprocessorTest.java
1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.ignite.ml.preprocessing.imputing;
19
20 import org.apache.ignite.ml.math.Vector;
21 import org.apache.ignite.ml.math.VectorUtils;
22 import org.junit.Test;
23
24 import static org.junit.Assert.assertArrayEquals;
25
26 /**
27 * Tests for {@link ImputerPreprocessor}.
28 */
29 public class ImputerPreprocessorTest {
30 /** Tests {@code apply()} method. */
31 @Test
32 public void testApply() {
33 double[][] data = new double[][]{
34 {Double.NaN, 20, 3},
35 {2, Double.NaN, 8},
36 {Double.NaN, Double.NaN, Double.NaN},
37 };
38
39 ImputerPreprocessor<Integer, Vector> preprocessor = new ImputerPreprocessor<>(
40 VectorUtils.of(1.1, 10.1, 100.1),
41 (k, v) -> v
42 );
43
44 double[][] postProcessedData = new double[][]{
45 {1.1, 20, 3},
46 {2, 10.1, 8},
47 {1.1, 10.1, 100.1},
48 };
49
50 for (int i = 0; i < data.length; i++)
51 assertArrayEquals(postProcessedData[i], preprocessor.apply(i, VectorUtils.of(data[i])).asArray(), 1e-8);
52 }
53 }