Consider the particle being matched if hit counts is larger than the …

…half of the number of measurements

performance/src/efficiency/finding_performance_writer.cpp

@@ -170,14 +170,15 @@ void finding_performance_writer::write_common(
         std::vector<particle_hit_count> particle_hit_counts =
             identify_contributing_particles(measurements, evt_map.meas_ptc_map);
 
-        if (particle_hit_counts.size() == 1) {
-            auto pid = particle_hit_counts.at(0).ptc.particle_id;
+        assert(measurements.size() > 0u);
+        // Consider it being matched if hit counts is larger than the half
+        // of the number of measurements
+        if (particle_hit_counts.at(0).hit_counts >= measurements.size() / 2) {
+            const auto pid = particle_hit_counts.at(0).ptc.particle_id;
             match_counter[pid]++;
-        }
-
-        if (particle_hit_counts.size() > 1) {
+        } else {
             for (particle_hit_count const& phc : particle_hit_counts) {
-                auto pid = phc.ptc.particle_id;
+                const auto pid = phc.ptc.particle_id;
                 fake_counter[pid]++;
             }
         }