| package org.apache.samoa.instances; |
| |
| /* |
| * #%L |
| * SAMOA |
| * %% |
| * Copyright (C) 2014 - 2015 Apache Software Foundation |
| * %% |
| * Licensed 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. |
| * #L% |
| */ |
| |
| public class DenseInstanceData implements InstanceData{ |
| |
| /** |
| * Instantiates a new dense instance data. |
| * |
| * @param array the array |
| */ |
| public DenseInstanceData(double[] array) { |
| this.attributeValues = array; |
| } |
| |
| /** |
| * Instantiates a new dense instance data. |
| * |
| * @param length the length |
| */ |
| public DenseInstanceData(int length) { |
| this.attributeValues = new double[length]; |
| } |
| |
| /** |
| * Instantiates a new dense instance data. |
| */ |
| public DenseInstanceData() { |
| this(0); |
| } |
| |
| /** The attribute values. */ |
| protected double[] attributeValues; |
| |
| /** |
| * Num attributes. |
| * |
| * @return the int |
| */ |
| @Override |
| public int numAttributes() { |
| return this.attributeValues.length; |
| } |
| |
| /** |
| * Value. |
| * |
| * @param indexAttribute the index attribute |
| * @return the double |
| */ |
| @Override |
| public double value(int indexAttribute) { |
| if (this.attributeValues.length <= indexAttribute) |
| return this.attributeValues[this.attributeValues.length-1]; |
| |
| return this.attributeValues[indexAttribute]; |
| } |
| |
| /** |
| * Checks if is missing. |
| * |
| * @param indexAttribute the index attribute |
| * @return true, if is missing |
| */ |
| @Override |
| public boolean isMissing(int indexAttribute) { |
| return Double.isNaN(this.value(indexAttribute)); |
| } |
| |
| /** |
| * Num values. |
| * |
| * @return the int |
| */ |
| @Override |
| public int numValues() { |
| return numAttributes(); |
| } |
| |
| /** |
| * Index. |
| * |
| * @param indexAttribute the index attribute |
| * @return the int |
| */ |
| @Override |
| public int index(int indexAttribute) { |
| return indexAttribute; |
| } |
| |
| /** |
| * Value sparse. |
| * |
| * @param indexAttribute the index attribute |
| * @return the double |
| */ |
| @Override |
| public double valueSparse(int indexAttribute) { |
| return value(indexAttribute); |
| } |
| |
| /** |
| * Checks if is missing sparse. |
| * |
| * @param indexAttribute the index attribute |
| * @return true, if is missing sparse |
| */ |
| @Override |
| public boolean isMissingSparse(int indexAttribute) { |
| return isMissing(indexAttribute); |
| } |
| |
| /** |
| * To double array. |
| * |
| * @return the double[] |
| */ |
| @Override |
| public double[] toDoubleArray() { |
| return attributeValues; |
| } |
| |
| /** |
| * Sets the value. |
| * |
| * @param attributeIndex the attribute index |
| * @param d the d |
| */ |
| @Override |
| public void setValue(int attributeIndex, double d) { |
| this.attributeValues[attributeIndex] = d; |
| } |
| |
| @Override |
| public void deleteAttributeAt(int index) { |
| |
| double[] newValues = new double[attributeValues.length - 1]; |
| |
| System.arraycopy(attributeValues, 0, newValues, 0, index); |
| if (index < attributeValues.length - 1) { |
| System.arraycopy(attributeValues, index + 1, newValues, index, |
| attributeValues.length - (index + 1)); |
| } |
| attributeValues = newValues; |
| } |
| |
| @Override |
| public InstanceData copy() { |
| return new DenseInstanceData(this.attributeValues); |
| } |
| |
| } |