Browsing by Author "Guerriero, Francesca"
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Item Dyadic TGDs - A new paradigm for ontological query answering(Università della Calabria, 2022-03-11) Marte, Cinzia; Greco, Gianluigi; Manna, Marco; Guerriero, Francesca; Leone, NicolaOntology-BasedQueryAnswering(OBQA)consistsinqueryingdata– bases bytakingontologicalknowledgeintoaccount.Wefocusona logical frameworkbasedonexistentialrulesor tuple generatingdepen- dencies (TGDs), alsoknownasDatalog±, whichcollectsthebasicde- cidable classesofTGDs,andgeneralizesseveralontologyspecification languages. While thereexistlotsofdifferentclassesintheliterature,inmost cases eachofthemrequiresthedevelopmentofaspecificsolverand, only rarely,thedefinitionofanewclassallowstheuseofexisting systems. Thisgapbetweenthenumberofexistentparadigmsandthe numberofdevelopedtools,promptedustodefineacombinationof Shy and Ward (twowell-knownclassesthatenjoygoodcomputational properties)withtheaimofexploitingthetooldevelopedfor Shy. Nevertheless,studyinghowtomergethesetwoclasses,wehavereal- ized thatitwouldbepossibletodefine,inamoregeneralway,the combinationofexistingclasses,inordertomakethemostofexisting systems. Hence, inthiswork,startingfromtheanalysisofthetwoaforemen- tioned existingclasses,wedefineamoregeneralclass,named Dyadic TGDs, thatallowstoextendinauniformandelegantwayallthede- cidable classes,whileusingtheexistentrelatedsystems.Atthesame time, wedefinealsoacombinationof Shy and Ward, named Ward+, and weshowthatitcanbeseenasaDyadicsetofTGDs. Finally,tosupportthetheoreticalpartofthethesis,weimplementa BCQ evaluationalgorithmfortheclass Ward+, thattakesadvantage of anexistingsolverdevelopedfor Shy.Item Green logistics and crowd-shipping: challenges and opportunities(2018-01-19) Macrina, Giusy; Leone, Nicola; Guerriero, Francesca; Laporte, GilbertItem Metodi euristici per la soluzione dello stochastic dial a ride problem(2011) Grande, Maria Grazia; Guerriero, Francesca; Grandinetti, LucioItem Modelli e metodi di revenue management per il noleggio ottimale di mezzi di trasporto(2014-05-19) Benigno, Simona; Guerriero, Francesca; Grandinetti, LucioItem Models and methods for the constrained shortest path problem and its variants(2014-06-06) Di Puglia Pugliese, Luigi; Guerriero, Francesca; Grandinetti, LucioItem Models and Policies for Service Industries via Revenue Management(2011) Olivito, Filomena; Miglionico, Giovanna; Guerriero, Francesca; Grandinetti, Lucio