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NLPChunkerOp.cs
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NLPChunkerOp.cs
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// Lucene version compatibility level 8.2.0
using Lucene.Net.Support.Threading;
using opennlp.tools.chunker;
namespace Lucene.Net.Analysis.OpenNlp.Tools
{
/*
* 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.
*/
/// <summary>
/// Supply OpenNLP Chunking tool
/// Requires binary models from OpenNLP project on SourceForge.
/// </summary>
public class NLPChunkerOp
{
private readonly ChunkerME chunker = null;
public NLPChunkerOp(ChunkerModel chunkerModel)
{
chunker = new ChunkerME(chunkerModel);
}
public virtual string[] GetChunks(string[] words, string[] tags, double[] probs)
{
UninterruptableMonitor.Enter(this);
try
{
string[] chunks = chunker.chunk(words, tags);
if (probs != null)
chunker.probs(probs);
return chunks;
}
finally
{
UninterruptableMonitor.Exit(this);
}
}
}
}