| /* |
| * 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 opennlp.tools.ml.model; |
| |
| import java.util.Arrays; |
| import java.util.Objects; |
| |
| /** |
| * A maxent event representation which we can use to sort based on the |
| * predicates indexes contained in the events. |
| */ |
| public class ComparableEvent implements Comparable<ComparableEvent> { |
| public int outcome; |
| public int[] predIndexes; |
| public int seen = 1; // the number of times this event has been seen. |
| |
| public float[] values; |
| |
| public ComparableEvent(int oc, int[] pids, float[] values) { |
| outcome = oc; |
| this.values = values; |
| predIndexes = pids; |
| } |
| |
| public ComparableEvent(int oc, int[] pids) { |
| this(oc, pids, null); |
| } |
| |
| public int compareTo(ComparableEvent ce) { |
| |
| int compareOutcome = Integer.compare(outcome, ce.outcome); |
| if (compareOutcome != 0) { |
| return compareOutcome; |
| } |
| |
| int smallerLength = StrictMath.min(predIndexes.length, ce.predIndexes.length); |
| |
| for (int i = 0; i < smallerLength; i++) { |
| int comparePredIndexes = Integer.compare(predIndexes[i], ce.predIndexes[i]); |
| if (comparePredIndexes != 0) { |
| return comparePredIndexes; |
| } |
| if (values != null && ce.values != null) { |
| float compareValues = Float.compare(values[i], ce.values[i]); |
| if (!Float.valueOf(compareValues).equals(Float.valueOf(0.0f))) { |
| return (int) compareValues; |
| } |
| } else if (values != null) { |
| float compareValues = Float.compare(values[i], 1.0f); |
| if (!Float.valueOf(compareValues).equals(Float.valueOf(0.0f))) { |
| return (int) compareValues; |
| } |
| } else if (ce.values != null) { |
| float compareValues = Float.compare(1.0f, ce.values[i]); |
| if (!Float.valueOf(compareValues).equals(Float.valueOf(0.0f))) { |
| return (int) compareValues; |
| } |
| } |
| } |
| |
| int comparePredIndexesLength = Integer.compare(predIndexes.length, ce.predIndexes.length); |
| if (comparePredIndexesLength != 0) { |
| return comparePredIndexesLength; |
| } |
| |
| return 0; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| |
| if (this == obj) |
| return true; |
| |
| if (obj instanceof ComparableEvent) { |
| ComparableEvent other = (ComparableEvent) obj; |
| return outcome == other.outcome && |
| Arrays.equals(predIndexes, other.predIndexes) && |
| seen == other.seen && |
| Arrays.equals(values, other.values); |
| } |
| |
| return false; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(outcome, Arrays.hashCode(predIndexes), seen, Arrays.hashCode(values)); |
| } |
| |
| public String toString() { |
| StringBuilder s = new StringBuilder().append(outcome).append(":"); |
| for (int i = 0; i < predIndexes.length; i++) { |
| s.append(" ").append(predIndexes[i]); |
| if (values != null) { |
| s.append("=").append(values[i]); |
| } |
| } |
| return s.toString(); |
| } |
| |
| } |
| |