+# Module Novelty Index
+# mnvi = |LocS(module)| / mbms(parents(module))
+class MNVI
+ super MModuleMetric
+ super FloatMetric
+ redef fun name do return "mnvi"
+ redef fun desc do return "module novelty index, contribution of the module to its branch in term of introductions"
+
+ redef fun collect(mmodules) do
+ var mbms = new MBMS(model, mainmodule, filter)
+ for mmodule in mmodules do
+ # compute branch mean size
+ var parents = mmodule.in_importation.direct_greaters
+ if parents.length > 0 then
+ mbms.clear
+ mbms.collect(new HashSet[MModule].from(parents))
+ # compute module novelty index
+ var locc = mmodule.collect_intro_mclassdefs(filter).length
+ locc += mmodule.collect_redef_mclassdefs(filter).length
+ values[mmodule] = locc.to_f / mbms.avg
+ else
+ values[mmodule] = 0.0
+ end
+ end
+ end
+end
+