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.commons.math4.neuralnet;
19
20 /**
21 * Wraps a given initializer.
22 */
23 public class OffsetFeatureInitializer
24 implements FeatureInitializer {
25 /** Wrapped initializer. */
26 private final FeatureInitializer orig;
27 /** Offset. */
28 private int inc = 0;
29
30 /**
31 * Creates a new initializer whose {@link #value()} method
32 * will return {@code orig.value() + offset}, where
33 * {@code offset} is automatically incremented by one at
34 * each call.
35 *
36 * @param orig Original initializer.
37 */
38 public OffsetFeatureInitializer(FeatureInitializer orig) {
39 this.orig = orig;
40 }
41
42 /** {@inheritDoc} */
43 @Override
44 public double value() {
45 return orig.value() + inc++;
46 }
47 }