115 lines
2.8 KiB
Java
115 lines
2.8 KiB
Java
package eu.dnetlib.pace.distance;
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import java.io.Serializable;
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import java.util.List;
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import java.util.Map;
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import com.wcohen.ss.AbstractStringDistance;
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import eu.dnetlib.pace.common.AbstractPaceFunctions;
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import eu.dnetlib.pace.config.Type;
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import eu.dnetlib.pace.model.Field;
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import eu.dnetlib.pace.model.FieldList;
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/**
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* For the rest of the fields delegate the compare measure to the second string library.
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*/
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public abstract class SecondStringDistanceAlgo extends AbstractPaceFunctions implements DistanceAlgo {
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// val aliases = Map(('â‚' to '₉') zip ('1' to '9'): _*) ++ Map(('â´' to 'â¹') zip ('4' to '9'): _*) ++ Map('¹' -> '1', '²' ->
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// '2', * '³'
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// -> '3')
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/** The ssalgo. */
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protected AbstractStringDistance ssalgo;
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/** The weight. */
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protected double weight = 0.0;
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private Map<String, Number> params;
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protected SecondStringDistanceAlgo(Map<String, Number> params, final AbstractStringDistance ssalgo){
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this.params = params;
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this.weight = params.get("weight").doubleValue();
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this.ssalgo = ssalgo;
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}
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/**
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* Instantiates a new second string compare algo.
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*
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* @param weight
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* the weight
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* @param ssalgo
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* the ssalgo
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*/
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protected SecondStringDistanceAlgo(final double weight, final AbstractStringDistance ssalgo) {
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this.ssalgo = ssalgo;
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this.weight = weight;
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}
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protected SecondStringDistanceAlgo(final AbstractStringDistance ssalgo){
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this.ssalgo = ssalgo;
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}
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/**
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* Normalize.
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*
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* @param d
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* the d
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* @return the double
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*/
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protected abstract double normalize(double d);
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/**
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* Distance.
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*
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* @param a
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* the a
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* @param b
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* the b
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* @return the double
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*/
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public double distance(final String a, final String b) {
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double score = ssalgo.score(a, b);
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return normalize(score);
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}
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/**
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* Distance.
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*
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* @param a
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* the a
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* @param b
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* the b
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* @return the double
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*/
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protected double distance(final List<String> a, final List<String> b) {
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return distance(concat(a), concat(b));
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}
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/*
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* (non-Javadoc)
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*
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* @see eu.dnetlib.pace.compare.DistanceAlgo#compare(eu.dnetlib.pace.model.Field, eu.dnetlib.pace.model.Field)
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*/
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@Override
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public double distance(final Field a, final Field b) {
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if (a.getType().equals(Type.String) && b.getType().equals(Type.String)) return distance(a.stringValue(), b.stringValue());
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if (a.getType().equals(Type.List) && b.getType().equals(Type.List)) return distance(toList(a), toList(b));
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throw new IllegalArgumentException("invalid types\n- A: " + a.toString() + "\n- B: " + b.toString());
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}
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/**
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* To list.
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*
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* @param list
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* the list
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* @return the list
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*/
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protected List<String> toList(final Field list) {
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return ((FieldList) list).stringList();
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}
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}
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