| /* |
| * 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; |
| |
| /** Object which compresses events in memory and performs feature selection. |
| */ |
| public interface DataIndexer { |
| /** |
| * Returns the array of predicates seen in each event. |
| * @return a 2-D array whose first dimension is the event index and array this refers to contains |
| * the contexts for that event. |
| */ |
| public int[][] getContexts(); |
| |
| /** |
| * Returns an array indicating the number of times a particular event was seen. |
| * @return an array indexed by the event index indicating the number of times a particular event was seen. |
| */ |
| public int[] getNumTimesEventsSeen(); |
| |
| /** |
| * Returns an array indicating the outcome index for each event. |
| * @return an array indicating the outcome index for each event. |
| */ |
| public int[] getOutcomeList(); |
| |
| /** |
| * Returns an array of predicate/context names. |
| * @return an array of predicate/context names indexed by context index. These indices are the |
| * value of the array returned by <code>getContexts</code>. |
| */ |
| public String[] getPredLabels(); |
| |
| /** |
| * Returns an array of the count of each predicate in the events. |
| * @return an array of the count of each predicate in the events. |
| */ |
| public int[] getPredCounts(); |
| |
| /** |
| * Returns an array of outcome names. |
| * @return an array of outcome names indexed by outcome index. |
| */ |
| public String[] getOutcomeLabels(); |
| |
| /** |
| * Returns the values associated with each event context or null if integer values are to be used. |
| * @return the values associated with each event context. |
| */ |
| public float[][] getValues(); |
| |
| /** |
| * Returns the number of total events indexed. |
| * @return The number of total events indexed. |
| */ |
| public int getNumEvents(); |
| } |