/**
* Copyright (C) 2013 Christian Kohlschütter (ckkohl79@gmail.com)
*
* Licensed 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 de.l3s.boilerpipe.extractors;
import de.l3s.boilerpipe.BoilerpipeProcessingException;
import de.l3s.boilerpipe.document.TextDocument;
import de.l3s.boilerpipe.filters.english.IgnoreBlocksAfterContentFilter;
import de.l3s.boilerpipe.filters.english.NumWordsRulesClassifier;
import de.l3s.boilerpipe.filters.english.TerminatingBlocksFinder;
import de.l3s.boilerpipe.filters.heuristics.BlockProximityFusion;
import de.l3s.boilerpipe.filters.heuristics.DocumentTitleMatchClassifier;
import de.l3s.boilerpipe.filters.heuristics.ExpandTitleToContentFilter;
import de.l3s.boilerpipe.filters.heuristics.KeepLargestBlockFilter;
import de.l3s.boilerpipe.filters.heuristics.LargeBlockSameTagLevelToContentFilter;
import de.l3s.boilerpipe.filters.heuristics.ListAtEndFilter;
import de.l3s.boilerpipe.filters.heuristics.TrailingHeadlineToBoilerplateFilter;
import de.l3s.boilerpipe.filters.simple.BoilerplateBlockFilter;
/**
* A full-text extractor which is tuned towards news articles. In this scenario
* it achieves higher accuracy than {@link DefaultExtractor}.
*
* @author Christian Kohlschütter
*/
public final class ArticleExtractor extends ExtractorBase {
public static final ArticleExtractor INSTANCE = new ArticleExtractor();
/**
* Returns the singleton instance for {@link de.l3s.boilerpipe.extractors.ArticleExtractor}.
*/
public static ArticleExtractor getInstance() {
return INSTANCE;
}
public boolean process(TextDocument doc)
throws BoilerpipeProcessingException {
return
TerminatingBlocksFinder.INSTANCE.process(doc)
| new DocumentTitleMatchClassifier(doc.getTitle()).process(doc)
| NumWordsRulesClassifier.INSTANCE.process(doc)
| IgnoreBlocksAfterContentFilter.DEFAULT_INSTANCE.process(doc)
| TrailingHeadlineToBoilerplateFilter.INSTANCE.process(doc)
| BlockProximityFusion.MAX_DISTANCE_1.process(doc)
| BoilerplateBlockFilter.INSTANCE_KEEP_TITLE.process(doc)
| BlockProximityFusion.MAX_DISTANCE_1_CONTENT_ONLY_SAME_TAGLEVEL.process(doc)
| KeepLargestBlockFilter.INSTANCE_EXPAND_TO_SAME_TAGLEVEL_MIN_WORDS.process(doc)
| ExpandTitleToContentFilter.INSTANCE.process(doc)
| LargeBlockSameTagLevelToContentFilter.INSTANCE.process(doc)
| ListAtEndFilter.INSTANCE.process(doc)
;
}
}