SloppyPhraseScorerpublic final class SloppyPhraseScorer extends PhraseScorer | Copyright 2004 The Apache Software Foundation
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. |
| Fields Summary |
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| private int | slop |
| Constructors Summary |
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SloppyPhraseScorer(Weight weight, TermPositions[] tps, int[] positions, Similarity similarity, int slop, byte[] norms)
super(weight, tps, positions, similarity, norms);
this.slop = slop;
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| Methods Summary |
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| protected final float | phraseFreq()
pq.clear();
int end = 0;
for (PhrasePositions pp = first; pp != null; pp = pp.next) {
pp.firstPosition();
if (pp.position > end)
end = pp.position;
pq.put(pp); // build pq from list
}
float freq = 0.0f;
boolean done = false;
do {
PhrasePositions pp = (PhrasePositions) pq.pop();
int start = pp.position;
int next = ((PhrasePositions) pq.top()).position;
for (int pos = start; pos <= next; pos = pp.position) {
start = pos; // advance pp to min window
if (!pp.nextPosition()) {
done = true; // ran out of a term -- done
break;
}
}
int matchLength = end - start;
if (matchLength <= slop)
freq += getSimilarity().sloppyFreq(matchLength); // score match
if (pp.position > end)
end = pp.position;
pq.put(pp); // restore pq
} while (!done);
return freq;
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