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Add lucene LMSimilarity #5701
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Add lucene LMSimilarity #5701
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55 changes: 55 additions & 0 deletions
55
src/main/java/org/elasticsearch/index/similarity/LMDirichletSimilarityProvider.java
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Original file line number | Diff line number | Diff line change |
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/* | ||
* Licensed to Elasticsearch under one or more contributor | ||
* license agreements. See the NOTICE file distributed with | ||
* this work for additional information regarding copyright | ||
* ownership. Elasticsearch 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. | ||
*/ | ||
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package org.elasticsearch.index.similarity; | ||
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import org.apache.lucene.search.similarities.LMDirichletSimilarity; | ||
import org.apache.lucene.search.similarities.Similarity; | ||
import org.elasticsearch.common.inject.Inject; | ||
import org.elasticsearch.common.inject.assistedinject.Assisted; | ||
import org.elasticsearch.common.settings.Settings; | ||
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/** | ||
* {@link SimilarityProvider} for {@link LMDirichletSimilarity}. | ||
* <p/> | ||
* Configuration options available: | ||
* <ul> | ||
* <li>mu</li> | ||
* </ul> | ||
* @see LMDirichletSimilarity For more information about configuration | ||
*/ | ||
public class LMDirichletSimilarityProvider extends AbstractSimilarityProvider { | ||
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private final LMDirichletSimilarity similarity; | ||
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@Inject | ||
public LMDirichletSimilarityProvider(@Assisted String name, @Assisted Settings settings) { | ||
super(name); | ||
float mu = settings.getAsFloat("mu", 2000f); | ||
this.similarity = new LMDirichletSimilarity(mu); | ||
} | ||
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/** | ||
* {@inheritDoc} | ||
*/ | ||
@Override | ||
public Similarity get() { | ||
return similarity; | ||
} | ||
} |
55 changes: 55 additions & 0 deletions
55
src/main/java/org/elasticsearch/index/similarity/LMJelinekMercerSimilarityProvider.java
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/* | ||
* Licensed to Elasticsearch under one or more contributor | ||
* license agreements. See the NOTICE file distributed with | ||
* this work for additional information regarding copyright | ||
* ownership. Elasticsearch 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. | ||
*/ | ||
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package org.elasticsearch.index.similarity; | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. Same as above |
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import org.apache.lucene.search.similarities.LMJelinekMercerSimilarity; | ||
import org.apache.lucene.search.similarities.Similarity; | ||
import org.elasticsearch.common.inject.Inject; | ||
import org.elasticsearch.common.inject.assistedinject.Assisted; | ||
import org.elasticsearch.common.settings.Settings; | ||
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/** | ||
* {@link SimilarityProvider} for {@link LMJelinekMercerSimilarity}. | ||
* <p/> | ||
* Configuration options available: | ||
* <ul> | ||
* <li>lambda</li> | ||
* </ul> | ||
* @see LMJelinekMercerSimilarity For more information about configuration | ||
*/ | ||
public class LMJelinekMercerSimilarityProvider extends AbstractSimilarityProvider { | ||
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private final LMJelinekMercerSimilarity similarity; | ||
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@Inject | ||
public LMJelinekMercerSimilarityProvider(@Assisted String name, @Assisted Settings settings) { | ||
super(name); | ||
float lambda = settings.getAsFloat("lambda", 0.1f); | ||
this.similarity = new LMJelinekMercerSimilarity(lambda); | ||
} | ||
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/** | ||
* {@inheritDoc} | ||
*/ | ||
@Override | ||
public Similarity get() { | ||
return similarity; | ||
} | ||
} |
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We are missing the license header here... build fails :(