forked from D-Net/dnet-hadoop
91 lines
2.0 KiB
Java
91 lines
2.0 KiB
Java
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package eu.dnetlib.pace.tree;
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import java.util.Map;
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import org.apache.commons.lang3.StringUtils;
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import com.wcohen.ss.AbstractStringDistance;
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import eu.dnetlib.pace.config.Config;
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import eu.dnetlib.pace.tree.support.AbstractStringComparator;
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import eu.dnetlib.pace.tree.support.ComparatorClass;
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/**
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* The Class SubStringLevenstein.
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*/
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@ComparatorClass("subStringLevenstein")
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public class SubStringLevenstein extends AbstractStringComparator {
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/**
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* The limit.
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*/
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protected int limit;
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/**
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* Instantiates a new sub string levenstein.
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*
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* @param w the w
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*/
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public SubStringLevenstein(final double w) {
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super(w, new com.wcohen.ss.Levenstein());
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}
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public SubStringLevenstein(Map<String, String> params) {
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super(params, new com.wcohen.ss.Levenstein());
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this.limit = Integer.parseInt(params.getOrDefault("limit", "1"));
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}
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/**
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* Instantiates a new sub string levenstein.
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*
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* @param w the w
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* @param limit the limit
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*/
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public SubStringLevenstein(final double w, final int limit) {
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super(w, new com.wcohen.ss.Levenstein());
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this.limit = limit;
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}
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/**
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* Instantiates a new sub string levenstein.
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*
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* @param w the w
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* @param limit the limit
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* @param ssalgo the ssalgo
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*/
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protected SubStringLevenstein(final double w, final int limit, final AbstractStringDistance ssalgo) {
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super(w, ssalgo);
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this.limit = limit;
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}
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/*
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* (non-Javadoc)
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* @see eu.dnetlib.pace.compare.SecondStringDistanceAlgo#compare(eu.dnetlib.pace.model.Field,
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* eu.dnetlib.pace.model.Field)
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*/
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@Override
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public double distance(final String a, final String b, final Config conf) {
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return distance(StringUtils.left(a, limit), StringUtils.left(b, limit), conf);
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}
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/*
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* (non-Javadoc)
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* @see eu.dnetlib.pace.compare.DistanceAlgo#getWeight()
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*/
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@Override
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public double getWeight() {
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return super.weight;
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}
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/*
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* (non-Javadoc)
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* @see eu.dnetlib.pace.compare.SecondStringDistanceAlgo#normalize(double)
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*/
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@Override
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protected double normalize(final double d) {
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return 1 / Math.pow(Math.abs(d) + 1, 0.1);
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}
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}
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