NLP-Based Requirements Modeling Experiments on the Quality of the models

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1、UNIVERSITYOFTRENTODEPARTMENTOFINFORMATIONANDCOMMUNICATIONTECHNOLOGY38050Povo–Trento(Italy),ViaSommarive14http://www.dit.unitn.itNLP-BASEDREQUIREMENTSMODELING:EXPERIMENTSONTHEQUALITYOFTHEMODELSNadzeyaKiyavitskaya,NicolaZeni,LuisaMichandJohnMylopoulosJanuary2004TechnicalReport#DIT-04-00

2、5.NLP-BasedRequirementsModeling:*ExperimentsontheQualityofthemodels1112NadzeyaKiyavitskaya,NicolaZeni,LuisaMich,JohnMylopoulos1DepartmentofInformationandTelecommunicationTechnologies,UniversityofTrento{nadzeya.kiyavitskaya,nicola.zeni,luisa.mich}@unitn.it2DepartmentofComputerScience,U

3、niversityofTorontojm@cs.toronto.eduAbstractConceptualmodelsareusedinavarietyofareaswithinComputerScience,includingSoftwareEngineering,DatabasesandAI.Amajorbottleneckinbroadeningtheirapplicabilityisthetimeittakestobuildaconceptualmodelforanewapplication.Notsurprisingly,avarietyoftoolsa

4、ndtechniqueshavebeenproposedforreusingconceptualmodels,e.g.ontologies,orforbuildingthemsemi-automaticallyfromnaturallanguage(NL)descriptions.Whathasbeenleftlargelyunexploredistheimpactofsuchtoolsonthequalityofthemodelsthatarebeingcreated.Thispaperpresentstheresultsofthreeexperimentsde

5、signedtoassesstheextenttowhichaNatural-LanguageProcessing(NLP)toolimprovesthequalityofconceptualmodels,specificallyobject-orientedones.OurmainexperimentalhypothesisisthatthequalityofadomainclassmodelishigherifitsdevelopmentissupportedbyaNLPsystem.Thetoolusedfortheexperiment–namedNL-OO

6、PS–extractsclassesandassociationsfromaknowledgebaserealizedbyadeepsemanticanalysisofasampletext.Specifically,NL-OOPSproducesclassmodelsatdifferentlevelsofdetailbyexploitingclasshierarchiesintheknowledgebaseofaNLPsystemandmarksambiguitiesinthetext.Inourexperiments,wehadgroupsworkingwit

7、handwithoutthetool,andthencomparedandevaluatedthefinalclassmodelstheyproduced.Theresultsoftheexperiments–thefirstonthistopic–giveinsightsonthestateoftheartoflinguistics-basedComputerAidedSoftwareEngineering(CASE)toolsandallowidentifyingimportantguidelinestoimprovetheirperformance.Inpa

8、rticu