let' start to refine these results little bit more we're seeing that we're getting duplicate values back if we have movie that was similar to more than one movie that ratedit will come back more than once in the resultsso we want to combine those together if do in fact have the same moviemaybe that should get added up together into combinedstronger recommendation score return of the jedifor examplewas similar to both star wars and the empire strikes back how would we do thatusing the groupby command to combine rows we'll go ahead and explore that we're going to use the hspvqcz command again to group together all of the rows that are for the same movie nextwe will sum up their correlation score and look at the resultstjn$boejebuft tjn$boejebufthspvqcz tjn$boejebuftjoefy tvn tjn$boejebufttpsu@wbmvft joqmbdf svfbtdfoejoh 'bmtf tjn$boejebuftifbe following is the resultheythis is looking really goodso fuvsopguif+fej comes out way on topas it shouldwith score of bjefstpguif-ptu"sl  close second at and then we start to get to *oejbob+poftboeuif-btu$svtbef and some more movies if#sjehf pouif jwfs,xbj #bdlupuif'vuvsf  if ujoh these are all movies that would actually enjoy watchingyou knowi actually do like oldschool disney movies tooso $joefsfmmb isn' as crazy as it might seem the last thing we need to do is filter out the movies that 've already ratedbecause it doesn' make sense to recommend movies you've already seen