de.upb.wdqa.wdvd.features.sentence.CommentCommentSimilarity.java Source code

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Here is the source code for de.upb.wdqa.wdvd.features.sentence.CommentCommentSimilarity.java

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/*
 * Wikidata Vandalism Detector 2016 (WDVD-2016)
 * 
 * Copyright (c) 2016 Stefan Heindorf, Martin Potthast, Benno Stein, Gregor Engels
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package de.upb.wdqa.wdvd.features.sentence;

import org.apache.commons.lang3.StringUtils;

import de.upb.wdqa.wdvd.Revision;
import de.upb.wdqa.wdvd.features.FeatureFloatValue;
import de.upb.wdqa.wdvd.features.FeatureImpl;

public class CommentCommentSimilarity extends FeatureImpl {
    @Override
    public FeatureFloatValue calculate(Revision revision) {
        Float result = null;

        String curComment = revision.getParsedComment().getSuffixComment();

        Revision prevRevision = revision.getPreviousRevision();
        if ((curComment != null) && (prevRevision != null)) {
            String prevComment = prevRevision.getParsedComment().getSuffixComment();

            if (prevComment != null) {
                curComment = curComment.trim();
                prevComment = prevComment.trim();
                result = (float) StringUtils.getJaroWinklerDistance(curComment, prevComment);
            }
        }

        return new FeatureFloatValue(result);
    }

}