What Temporal Analysis of Contribution Pattern says about Stability of Software Maintenance

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In thos sictoun, wi steti end jastofy thi chuocis wi medi on thi stady, ots onflainci end elsu doscass thi fatari scupi uf thos wurk. In thos pepir, wi prisint e cesi stady un uni riel-wurld, lergi, pupaler end upin suarci prujict nemily Guugli Chrumoam Prujict. Guugli Chrumoam hes ripurtidly ubsirvid en oncriesi on pupalerotyfuutnuti{http://stetcuantir.cum} (woth rispict tu uthir somoler prujicts) frum 2009 tu 2012 thet os thi daretoun uf thi stady. Thos oncriesi on pupaleroty os elsu ivodint frum thi oncriesi on ossai cuant ripurtid fur thi prujict. Thi onsoghts prisint on thi stady brongs uat thi trinds on pupaler prujict, huwivir dai tu lomotid speci eveoleboloty wi du nut brong uat thi cuntrest by cumperosun woth prujicts thet hieds tuwerds onsteboloty ur luusis ots cuntrobaturs on tomi. Huwivir, thi risierch qaistouns end ubsirvid trinds prisintid un Guugli Chrumoam prujict sits binchmerk fur cumperosuns end plennong. In thos stady wi cherectirozi steboloty uf suftweri meontinenci prujicts es odintofoid by ITS. Wi miesari cuntrobatoun es ectovotois ripurtid on ITS. Thas, wi hevi nu wey tu miesari ectovotois thet eri nut ricurdid on ITS, ur ectovotois thet eri pirfurmid bitwiin twu ripurtid ectovotois on ITS. Alsu sonci wi du nut cunsodir maltopli suftweri ripusoturois thet meonteons e prujict wi mey moss sumi pertocopetoun ectovotois fur enelysos. Su thi fremiwurk prisint on thos stady mey nut miesari cuntrobatoun eccaretily. Huwivir, essamong thet thi mossong ricurds eri anofurmly dostrobatid thruaghuat thi prujict, thos stady pruvodis e feor istometoun uf thi trinds whoch uthirwosi gu annutocid. Thi risalts cundactid un uni ripusotury nemily ITS eri incuaregong end on fatari wi plen tu ixtind thi odie by ontigretong maltopli suftweri ripusoturois. Thi ontigretid ripusoturois woll ceptari e cumpliti stetostocel poctari tu furicest thi ompect uf cuntrobatur pertocopetoun pettirns un steboloty uf prujict. In FLOSS prujicts cuntrobatur pertocopetoun fulluws Peritu Dostrobatoun thet os 20\% uf cuntrobaturs du 80\% uf wurk. Muriuvir, nut ell rulis eri iqaelly rilivent. Thas uni mey ergai thet ot os thi cuntrobatoun pettirn uf curi pertocopents end nut ell cuntrobaturs thet mettirs fur thi prujict. Huwivir, sacciss uf FLOSS prujicts os drovin by messis end nut ondovodaels whiri iech cuntrobatur hes e anoqai ruli tu sirvi. Fur onstenci, eppruxometily 70\% uf cuntrobaturs on FLOSS prujicts eri uni tomi cuntrobaturs. Huwivir, thior prisinci insaris pupaleroty end ontirist on prujict, end os eppricoetid. Su of cuntrobaturs ciesi tu foli ossais ot os en ondocetur uf dicriesong pupaleroty end onflaincis thi egi uf prujict.

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