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Saturates the relevance boost given to already run matches;

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this avoids very commonly selected matches (e.g. konsole) to beat any other match even if the latter is in principle more relevant

svn path=/trunk/KDE/kdelibs/; revision=1128445
This commit is contained in:
Jacopo De Simoi 2010-05-19 09:51:21 +00:00
parent e3eda3ab65
commit 14ebf05e43
1 changed files with 4 additions and 1 deletions
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5
runnercontext.cpp
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@ -19,6 +19,8 @@
#include "runnercontext.h" #include "runnercontext.h"
#include <cmath>
#include <QReadWriteLock> #include <QReadWriteLock>
#include <QDir> #include <QDir>
@ -375,8 +377,9 @@ bool RunnerContext::addMatches(const QString &term, const QList<QueryMatch> &mat
LOCK_FOR_WRITE(d) LOCK_FOR_WRITE(d)
foreach (QueryMatch match, matches) { foreach (QueryMatch match, matches) {
// Give previously launched matches a slight boost in relevance // Give previously launched matches a slight boost in relevance
// The boost smoothly saturates to 0.5;
if (int count = d->launchCounts.value(match.id())) { if (int count = d->launchCounts.value(match.id())) {
match.setRelevance(match.relevance() + 0.05 * count); match.setRelevance(match.relevance() + 0.5 * (1-exp(-count*0.3)));
} }
d->matches.append(match); d->matches.append(match);