    001    package org.maltparser.parser.history.kbest;
    002
    003    import org.maltparser.core.exception.MaltChainedException;
    004    import org.maltparser.parser.history.action.SingleDecision;
    005    /**
    006    *
    007    * @author Johan Hall
    008    * @since 1.1
    009    **/
    010    public class ScoredKBestList extends KBestList{
    011
    012            public ScoredKBestList(SingleDecision action) {
    013                    this(-1, action);
    014            }
    015
    016            public ScoredKBestList(Integer k, SingleDecision action) {
    017                    super(k, action);
    018            }
    019
    020            protected void initKBestList() {
    021                    for (int i=0; i < this.k; i++) {
    022                            kBestList.add(new ScoredCandidate());
    023                    }
    024            }
    025
    026            public void add(int actionCode, float score) throws MaltChainedException {
    027                    if (k != -1 && addCandidateIndex >= k) { return; }
    028                    if (addCandidateIndex >= kBestList.size()) { kBestList.add(new ScoredCandidate()); }
    029                    if (!(kBestList.get(addCandidateIndex) instanceof ScoredCandidate)) {
    030                            super.add(actionCode);
    031                            return;
    032                    }
    033                    ScoredCandidate scand = (ScoredCandidate)kBestList.get(addCandidateIndex);
    034                    scand.setActionCode(actionCode);
    035                    scand.setScore(score);
    036                    if (addCandidateIndex == 0) {
    037                            if (decision instanceof SingleDecision) {
    038                                    ((SingleDecision)decision).addDecision(actionCode);
    039                            }
    040                            topCandidateIndex++;
    041                    }
    042                    addCandidateIndex++;
    043            }
    044
    045            public void add(String symbol, float score) throws MaltChainedException {
    046                    if (decision instanceof SingleDecision) {
    047                            this.add(((SingleDecision)decision).getDecisionCode(symbol), score);
    048                    }
    049            }
    050
    051            public float peekNextKBestScore() {
    052                    if (!(kBestList.get(addCandidateIndex) instanceof ScoredCandidate)) {
    053                            return Float.NaN;
    054                    }
    055                    if (addCandidateIndex != 0 && topCandidateIndex < addCandidateIndex && topCandidateIndex < kBestList.size()) {
    056                            return ((ScoredCandidate)kBestList.get(topCandidateIndex)).getScore();
    057                    }
    058                    return Float.NaN;
    059            }
    060
    061            /* (non-Javadoc)
    062             * @see java.lang.Object#toString()
    063             */
    064            public String toString() {
    065                    return super.toString();
    066            }
    067    }