| /* |
| * 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.opennlp.ml.model; |
| |
| /** |
| * This interface allows one to implement a prior distribution for use in |
| * maximum entropy model training. |
| */ |
| public interface Prior { |
| |
| /** |
| * Populates the specified array with the the log of the distribution for the specified context. |
| * The returned array will be overwritten and needs to be re-initialized with every call to this method. |
| * @param dist An array to be populated with the log of the prior distribution. |
| * @param context The indices of the contextual predicates for an event. |
| */ |
| public void logPrior(double[] dist, int[] context); |
| |
| /** |
| * Populates the specified array with the the log of the distribution for the specified context. |
| * The returned array will be overwritten and needs to be re-initialized with every call to this method. |
| * @param dist An array to be populated with the log of the prior distribution. |
| * @param context The indices of the contextual predicates for an event. |
| * @param values The values associated with the context. |
| */ |
| public void logPrior(double[] dist, int[] context, float[] values); |
| |
| /** |
| * Method to specify the label for the outcomes and contexts. This is used to map |
| * integer outcomes and contexts to their string values. This method is called prior |
| * to any call to #logPrior. |
| * @param outcomeLabels An array of each outcome label. |
| * @param contextLabels An array of each context label. |
| */ |
| public void setLabels(String[] outcomeLabels, String[] contextLabels); |
| } |