36 lines
1.0 KiB
Java
36 lines
1.0 KiB
Java
package net.filebot.similarity;
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import static java.util.stream.Collectors.*;
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import static net.filebot.util.StringUtilities.*;
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import static org.simmetrics.builders.StringMetricBuilder.*;
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import java.util.List;
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import org.simmetrics.StringMetric;
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import org.simmetrics.metrics.BlockDistance;
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import org.simmetrics.tokenizers.AbstractTokenizer;
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public class NumericSimilarityMetric implements SimilarityMetric {
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private final StringMetric metric = with(new BlockDistance<String>()).tokenize(new NumberTokeniser()).build();
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@Override
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public float getSimilarity(Object o1, Object o2) {
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return metric.compare(normalize(o1), normalize(o2));
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}
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protected String normalize(Object object) {
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// no need to do anything special here, because we don't care about anything but number patterns anyway
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return object.toString();
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}
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private static class NumberTokeniser extends AbstractTokenizer {
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@Override
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public List<String> tokenizeToList(String input) {
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return matchIntegers(input).stream().map(String::valueOf).collect(toList());
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}
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}
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}
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