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package eu.dnetlib.pace.clustering;
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import java.util.Collection;
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import java.util.Map;
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import java.util.Set;
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import java.util.StringTokenizer;
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import com.google.common.collect.Sets;
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/**
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* The Class Acronyms.
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*/
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public class Acronyms extends AbstractClusteringFunction {
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/**
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* Instantiates a new acronyms.
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*
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* @param params
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* the params
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*/
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public Acronyms(final Map<String, Integer> params) {
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super(params);
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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.clustering.AbstractClusteringFunction#doApply(java.lang.String)
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*/
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@Override
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protected Collection<String> doApply(final String s) {
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return extractAcronyms(s, param("max"), param("minLen"), param("maxLen"));
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}
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/**
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* Extract acronyms.
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*
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* @param s
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* the s
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* @param maxAcronyms
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* the max acronyms
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* @param minLen
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* the min len
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* @param maxLen
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* the max len
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* @return the sets the
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*/
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private Set<String> extractAcronyms(final String s, final int maxAcronyms, final int minLen, final int maxLen) {
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final Set<String> acronyms = Sets.newLinkedHashSet();
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for (int i = 0; i < maxAcronyms; i++) {
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final StringTokenizer st = new StringTokenizer(s);
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final StringBuilder sb = new StringBuilder();
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while (st.hasMoreTokens()) {
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final String token = st.nextToken();
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if (sb.length() > maxLen) {
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break;
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}
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if ((token.length() > 1) && (i < token.length())) {
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sb.append(token.charAt(i));
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}
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}
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String acronym = sb.toString();
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if (acronym.length() > minLen) {
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acronyms.add(acronym);
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}
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}
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return acronyms;
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}
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}
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