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1、StimulatingSkillEvolutioninMarket-basedCrowdsourcingBenjaminSatzger,HaraldPsaier,DanielSchall,andSchahramDustdarDistributedSystemsGroup,ViennaUniversityofTechnologyArgentinierstrasse8/184-1,A-1040Vienna,Austriafsatzger,psaier,schall,dustdarg@infosys.tuwien.
2、ac.at,WWWhomepage:http://www.infosys.tuwien.ac.atAbstract.Crowdsourcinghasemergedasanimportantparadigminhu-manproblem-solvingtechniquesontheWeb.Oneapplicationofcrowd-sourcingistooutsourcecertaintaskstothecrowdthatarediculttoimplementinsoftware.Anotherpoten
3、tialbene tofcrowdsourcingistheon-demandallocationofa
exibleworkforce.Businessesmayout-sourcetaskstothecrowdbasedontemporaryworkloadvariations.Amajorchallengeincrowdsourcingistoguaranteehigh-qualityprocessingoftasks.Wepresentanovelcrowdsourcingmarketplacetha
4、tmatchestaskstosuitableworkersbasedonauctions.Thekeytoensuringhighqualityliesinskilledmemberswhosecapabilitiescanbeestimatedcor-rectly.Wepresentanovelauctionmechanismforskillevolutionthathelpstocorrectlyestimateworkersandtoevolveskillsthatareneeded.Evaluati
5、onsshowthatthisleadstoimprovedcrowdsourcing.Keywords:Human-centricBPM,Crowdsourcing,Onlinecommunities,Taskmarkets,Auctions,Skillevolution1IntroductionToday,everchangingrequirementsforcein-housebusinessprocessestorapidlyadapttochangingsituationsinordertostay
6、competitive.Changesinvolvenotonlytheneedforprocessadaptation,butalso,requireanadditionalinclusionofnewcapabilitiesandknowledge,previouslyunavailabletothecompany.Thus,outsourcingofpartsofbusinessprocessesbecameanattractivemodel.Thiswork,inparticular,focuseso
7、nadistinguishedrecenttypeofoutsourcingcalledcrowd-sourcing.Thetermcrowdsourcingdescribesanewweb-basedbusinessmodelthatharnessesthecreativesolutionsofadistributednetworkofindividuals[4],[18].ThisnetworkofhumansistypicallyanopenInternet-basedplatformthatfollo
8、wstheopenworldassumptionandtriestoattractmemberswithdi erentknowledgeandinterests.LargeITcompaniessuchasAmazon,Google,orYahoo!haverecognizedtheopportunitiesbehindsuchmasscollaborationsystems[8]forbothi
