| /* |
| * 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.flink.ml.param; |
| |
| import org.apache.flink.ml.linalg.DenseVector; |
| import org.apache.flink.ml.linalg.SparseVector; |
| import org.apache.flink.ml.linalg.Vector; |
| |
| import java.util.List; |
| import java.util.Map; |
| |
| /** Class for the Vector parameter. */ |
| public class VectorParam extends Param<Vector> { |
| |
| public VectorParam( |
| String name, |
| String description, |
| Vector defaultValue, |
| ParamValidator<Vector> validator) { |
| super(name, Vector.class, description, defaultValue, validator); |
| } |
| |
| public VectorParam(String name, String description, Vector defaultValue) { |
| this(name, description, defaultValue, ParamValidators.alwaysTrue()); |
| } |
| |
| @Override |
| public Vector jsonDecode(Object object) { |
| Map<String, Object> vecValues = (Map) object; |
| if (vecValues.size() == 1) { |
| List<Double> list = (List<Double>) vecValues.get("values"); |
| double[] values = new double[list.size()]; |
| for (int i = 0; i < values.length; ++i) { |
| values[i] = list.get(i); |
| } |
| return new DenseVector(values); |
| } else if (vecValues.size() == 3) { |
| List<Double> valuesList = (List<Double>) vecValues.get("values"); |
| List<Integer> indicesList = (List<Integer>) vecValues.get("indices"); |
| int n = (int) vecValues.get("n"); |
| double[] values = new double[valuesList.size()]; |
| int[] indices = new int[indicesList.size()]; |
| for (int i = 0; i < values.length; ++i) { |
| values[i] = valuesList.get(i); |
| indices[i] = indicesList.get(i); |
| } |
| return new SparseVector(n, indices, values); |
| } else { |
| throw new UnsupportedOperationException("Vector parameter is invalid."); |
| } |
| } |
| } |