| using Lucene.Net.Analysis; |
| using Lucene.Net.Analysis.Core; |
| using Lucene.Net.Analysis.NGram; |
| using Lucene.Net.Analysis.Reverse; |
| using Lucene.Net.Index; |
| using Lucene.Net.Search; |
| using Lucene.Net.Util; |
| using NUnit.Framework; |
| using System.IO; |
| |
| namespace Lucene.Net.Classification |
| { |
| /* |
| * 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. |
| */ |
| |
| /** |
| * Testcase for <see cref="SimpleNaiveBayesClassifier"/> |
| */ |
| // TODO : eventually remove this if / when fallback methods exist for all un-supportable codec methods (see LUCENE-4872) |
| [SuppressCodecs("Lucene3x")] |
| public class SimpleNaiveBayesClassifierTest : ClassificationTestBase<BytesRef> |
| { |
| [Test] |
| public void TestBasicUsage() |
| { |
| CheckCorrectClassification(new SimpleNaiveBayesClassifier(), TECHNOLOGY_INPUT, TECHNOLOGY_RESULT, new MockAnalyzer(Random), textFieldName, categoryFieldName); |
| CheckCorrectClassification(new SimpleNaiveBayesClassifier(), POLITICS_INPUT, POLITICS_RESULT, new MockAnalyzer(Random), textFieldName, categoryFieldName); |
| } |
| |
| [Test] |
| public void TestBasicUsageWithQuery() |
| { |
| CheckCorrectClassification(new SimpleNaiveBayesClassifier(), TECHNOLOGY_INPUT, TECHNOLOGY_RESULT, new MockAnalyzer(Random), textFieldName, categoryFieldName, new TermQuery(new Term(textFieldName, "it"))); |
| } |
| |
| [Test] |
| public void TestNGramUsage() |
| { |
| CheckCorrectClassification(new SimpleNaiveBayesClassifier(), TECHNOLOGY_INPUT, TECHNOLOGY_RESULT, new NGramAnalyzer(), textFieldName, categoryFieldName); |
| } |
| |
| private class NGramAnalyzer : Analyzer |
| { |
| protected override TokenStreamComponents CreateComponents(string fieldName, TextReader reader) |
| { |
| Tokenizer tokenizer = new KeywordTokenizer(reader); |
| return new TokenStreamComponents(tokenizer, new ReverseStringFilter(TEST_VERSION_CURRENT, new EdgeNGramTokenFilter(TEST_VERSION_CURRENT, new ReverseStringFilter(TEST_VERSION_CURRENT, tokenizer), 10, 20))); |
| } |
| } |
| |
| [Test] |
| public void TestPerformance() |
| { |
| CheckPerformance(new SimpleNaiveBayesClassifier(), new MockAnalyzer(Random), categoryFieldName); |
| } |
| } |
| } |