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(index) Tune ranking for verbatim matches in the title, rewarding shorter titles

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This commit is contained in:
Viktor Lofgren 2024-08-03 14:47:23 +02:00
parent b21f8538a8
commit ee49c01d86
1 changed files with 4 additions and 2 deletions
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code/index/java/nu/marginalia/index/results/IndexResultScoreCalculator.java
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@ -197,7 +197,7 @@ public class IndexResultScoreCalculator {
temporalBias = 0; temporalBias = 0;
} }
final int titleLength = spans.title.length(); final int titleLength = Math.max(1, spans.title.length());
float coherenceScore = 0.f; float coherenceScore = 0.f;
@ -246,7 +246,9 @@ public class IndexResultScoreCalculator {
coherenceScore = 0.75f * largestOptional; coherenceScore = 0.75f * largestOptional;
} }
coherenceScore += (float) Math.pow(coherences.countOptional(positions) / (double) coherences.numOptional(), 2); if (coherences.numOptional() > 0) {
coherenceScore += (float) Math.pow(coherences.countOptional(positions) / (double) coherences.numOptional(), 2);
}
float[] weightedCounts = new float[compiledQuery.size()]; float[] weightedCounts = new float[compiledQuery.size()];
int firstPosition = Integer.MAX_VALUE; int firstPosition = Integer.MAX_VALUE;