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1、AppearsinProceedingsofthe9THIEEEInternationalConferenceonToolswithArtificialIntelligence,pp446–453,IEEEPress,1997KnowledgeRefinementtoDebugandMaintainaTabletFormulationSystemSusanCrawRobinBoswellRayRoweSchoolofComputerandMathematicalSciencesZENECAPharmaceuticalsTheRobe
2、rtGordonUniversityHurdsfieldIndustrialEstateAberdeenAB251HG,UKMacclesfieldEmail:smc,rab@scms.rgu.ac.ukCheshireSK102NA,UKAbstractwouldproducethedesiredexpertsolution(targetrules).RepairGenerationdecideswhichknowledgechangesef-Knowledgerefinementtoolshavecommonlybeenap-fec
3、trepairsthatpreventerror-causingrulesfromfiring,al-pliedtodiagnosticapplications.Thispaperconsidersthelowwrong-firerulestofirecorrectlyorenabletargetrulesrefinementofadesignapplication.Itexploresthediffer-tofire.Ofcoursetherewillbemanychangesthatachieveencesinknowledgecont
4、entandproblem-solvingstepsforsimilareffects.RefinementSelectionchooseswhichpo-designratherthandiagnosissystems,andinvestigatesaddi-tentialrepairsarelikelytobethemosteffectiveoverall.tionalrefinementoperators.Althoughtheproblem-solvingSelectionhappensatvariousstagesofthe
5、refinementpro-taskitselftendstobemorecomplex,thisinfactputsmorecess:whichrulesaremostlikelytobetoblamefortheconstraintsontheresultsoftheproblem-solvingandsothefaultytrainingcase,whichrepairismostlikelytoachieveevidenceonwhichtherefinementisbasedcanbemorerich.improvedpro
6、blem-solving,whichrefinedknowledgebaseResultsareprovidedforarealtabletformulationsystem,(KB)appearstoachievethebestproblem-solving?Selec-TFS,andexperienceisreportedfortwotypesofrefinementtionisthereforebasedonheuristicknowledgeabouteffec-tasks:debuggingtocorrectfaultypr
7、oblem-solvingofantiveblameallocationorrefinementgeneration,orempiricalearlyversionofTFS;maintenanceofTFSwhentheformu-evidenceoftheeffectiveproblem-solvingofrefinedKBs.lationtaskisalteredbyachangeincompanypolicy.Ourapplicationisarule-basedTabletFormulationSys-tem,TFS,imp
8、lementedinLogica'sProductFormulationExpertSystemshellPFES[16].TFSisinroutineuseatZenecaPharmaceuticals,whereitformsanimporta
