Fix divide by 0 when precision and recall are both 0
Fix divide by 0 when precision and recall are both 0

amonszpart/globOpt,amonszpart/globOpt,amonszpart/globOpt,amonszpart/globOpt,NUAAXXY/globOpt,amonszpart/globOpt,NUAAXXY/globOpt,NUAAXXY/globOpt,NUAAXXY/globOpt,NUAAXXY/globOpt,NUAAXXY/globOpt,amonszpart/globOpt