changeset 14:06b2ea2ca577 classical-rdf

* use floating-point scores for name matching

--- a/common/Objects.cpp	Fri Feb 19 11:41:57 2010 +0000
+++ b/common/Objects.cpp	Fri Feb 19 12:41:23 2010 +0000
@@ -275,7 +275,7 @@
     return false;
 }    
 
-int
+float
 Composer::matchFuzzyName(QString n) const
 {
     int fameBonus = m_pages.size();
@@ -284,9 +284,11 @@
     return matchFuzzyName(n.toLower().split(sre, QString::SkipEmptyParts));
 }
 
-int
+float
 Composer::matchFuzzyName(QStringList elements) const
 {
+    if (elements.empty()) return 0;
+
     cacheNames();
     int fameBonus = m_pages.size();
     
@@ -391,7 +393,7 @@
         score += fameBonus;
     }
 //    if (score > 1) std::cerr << "[score " << score << " for " << name().toStdString() << "]" << std::endl;
-    return score;
+    return float(score) / (elements.size() * 10);
 }
 
 static int

--- a/common/Objects.h	Fri Feb 19 11:41:57 2010 +0000
+++ b/common/Objects.h	Fri Feb 19 12:41:23 2010 +0000
@@ -357,7 +357,7 @@
      * that the intended composer was this one.  Higher return values
      * indicate greater confidence.
      */
-    int matchFuzzyName(QString name) const;
+    float matchFuzzyName(QString name) const;
 
     /**
      * Given another name which is believed to be a user-entered
@@ -367,7 +367,7 @@
      * indicate greater confidence.  The supplied name should have
      * been lower-cased and split on non-alphabetical characters.
      */
-    int matchFuzzyName(QStringList name) const;
+    float matchFuzzyName(QStringList name) const;
 
     /**
      * Return the supplied name reduced into a "simplified" form,

--- a/testapp/Loader.cpp	Fri Feb 19 11:41:57 2010 +0000
+++ b/testapp/Loader.cpp	Fri Feb 19 12:41:23 2010 +0000
@@ -94,21 +94,21 @@
     }
 */
     while (!std::cin.eof()) {
-        std::cerr << "Enter composer name: ";
+        std::cerr << std::endl << "Enter composer name: ";
         std::string s;
         getline(std::cin, s);
-        QMultiMap<int, QString> matches;
+        QMultiMap<float, QString> matches;
         QRegExp sre("[\\., -]+");
         QStringList elements = QString::fromStdString(s)
             .toLower().split(sre, QString::SkipEmptyParts);
 	foreach (QObject *o, composers) {
 	    Composer *c = qobject_cast<Composer *>(o);
 	    if (!c) continue;
-            int value = c->matchFuzzyName(elements);
+            float value = c->matchFuzzyName(elements);
             matches.insert(value, c->getSortName(false));
 	}
         int n = 0;
-        for (QMultiMap<int, QString>::const_iterator i = matches.end();
+        for (QMultiMap<float, QString>::const_iterator i = matches.end();
              i != matches.begin(); ) {
             --i;
             if (i.key() < 0) continue;
@@ -119,7 +119,9 @@
             } else {
                 std::cerr << " - ";
             }
-            std::cerr << i.value().toStdString() << std::endl;
+            std::cerr << i.value().toStdString();
+            for (int c = i.value().length(); c < 40; ++c) std::cerr << " ";
+            std::cerr << "[" << i.key() << "]" << std::endl;
             if (++n > 5 || i.key() < 1) break;
         }
         if (n == 0) std::cerr << "No matches" << std::endl;