Driven!by!technological!advances!in!hardware!(positioning!systems,!environmental! sensors),! software! (standards,! tools,! network! services),! and! aided! by! various! open! movements!(open,!linked,!government!data)!and!the!everGgrowing!trend!of!sharing! for! the! greater! good! (crowdsourcing,! crowdfunding,! collaborative! and! volunteered! geographic! information),! the! amount! of! available! geoGreferenced! data! has! seen! dramatic! explosion! over! the! past! few! years.! Human! activities! generate! data! and! traces! that! are! now! often! transparently! annotated! with! location! and! contextual! information.!At!the!same!time,!it!has!become!easier!than!ever!to!collect!and!combine! rich! and! diverse! information! about! locations.! Exploiting! this! torrent! of! geoG referenced!data!provides!a!tremendous!potential!to!materially!improve!existing!and! offer!novel!types!of!recommendation!services,!with!clear!benefits!in!many!domains,! including!social!networks,!marketing,!and!tourism.! Fully! exploiting! the! potential! of! locationGaware! recommendations! requires! addressing! core! challenges! and! combining! ideas! and! techniques! from! various! research! communities,! such! as! recommender! systems,! data! management,! geographic!information!systems,!social!network!analytics,!and!text!mining.!Bringing! together! scholars! and! practitioners! from! these! communities,! the! aim! of! the! LocalRec'15! workshop! was! to! provide! a! unique! forum! for! discussing! in! depth! and! collecting! feedback! about! the! challenges,! opportunities,! novel! techniques! and! applications! of! locationGaware! recommendations,! in! order! to! fuel! better! and! novel! recommender!systems!beyond!the!current!research!frontiers.! The!nonGexhaustive!list!of!topics!relevant!to!LocalRec'15!was!the!following:! •! LocationGbased!social!networks! o! friend/communities!recommendations! o! event,!venue,!and!other!locationGaware!recommendations! o! extracting!preferences,!tips,!ratings,!patterns,!habits! o! modeling!geoGsocial!influence!of!users!and!locations! •! LocationGbased!marketing! o! viral!campaigning! o! event!planning! o! locationGbased!advertising! •! Tourism!and!mobile!commerce! o! trip!planning!and!recommendations! o! automatic!guide!and!tour!generation! o! exhibition!arrangement! •! Evaluation!of!locationGaware!recommender!systems! o! collaborative!filtering!vs.!contentGbased!recommendations! o! case!and!empirical!studies! o! evaluation!methods!and!metrics! o! datasets!and!benchmarks! •! Security!and!privacy!implications! o! spatial!anonymization!and!cloaking! o! attack!and!threat!scenarios! Workshop'Officers'
Panagiotis!Bouros,!HumboldtGUniversität!zu!Berlin,!Germany! Neal!Lathia,!University!of!Cambridge,!United!Kingdom!! Matthias!Renz,!LudwigGMaximilians!Universität!München,!Germany! Francesco!Ricci,!Free!University!of!BozenGBolzano,!Italy! Dimitris!Sacharidis,!Technische!Universität!Wien,!Austria!! !
Jie!Bao,!Microsoft!Research! Matthias!Braunhofer,!Free!University!of!BozenGBolzano,!Italy! ChiGYin!Chow,!City!University!of!Hong!Kong! Victor!Codina,!Barcelona!Digital!Technology!Centre,!Spain! Huiji!Gao,!Arizona!State!University,!USA! Haosheng!Huang,!Technische!Universität!Wien,!Austria! Christian!S.!Jensen,!Aalborg!University,!Denmark! Marius!Kaminskas,!University!College!Cork,!Ireland! WangGChien!Lee,!Pennsylvania!State!University,!USA! Bernd!Ludwig,!Universität!Regensburg,!Germany! Nikos!Mamoulis,!University!of!Hong!Kong! Mario!Nascimento,!University!of!Alberta,!Canada! Anastasios!Noulas,!University!of!Cambridge,!UK! Alexei!Pozdnouhkov,!UC!Berkeley,!USA! Mohamed!Sarwat,!Arizona!State!University,!USA! Dimitrios!Skoutas,!Athena!RC,!Greece! Wolfgang!Wörndl,!Technische!Universiät!München,!Germany! Sen!Xu,!Pennsylvania!State!University,!USA! Man!Lung!Yiu,!Hong!Kong!Polytechnic!University! ! Location6Aware(Recommendation(Systems:(Where(We(Are(and(Where( ! We!Recommend(to(Go! M.#del#Carmen#Rodríguez2Hernández,#S.#Ilarri,#R.#Trillo2Lado,#and#R.#Hermoso! 1! ( ! Automatic(Recommendations(of(Categories(for(Geospatial(Entities( ! G.#Giannopoulos,#N.#Karagiannakis,#D.#Skoutas,#and#S.#Athanasiou! 9! ( ! "Where(Far(Can(Be(Close"(Finding(Distant(Neighbors(in(Recommender( ! Systems( V.#Kumar,#D.#Jarratt,#R.#Anand,#J.#A.#Konstan,#and#B.#Hecht! 13! ( ! Context6Aware(Recommendations(for(Mobile(Shoppin(g ! B.#Lamche,#Y.#Rödl,#C.#Hauptmann,#and#W.#Wörndl( 21! ( ! Personalized(Location(Recommendation(by(Aggregating(Multiple( ! Recommenders(in(Diversity( Z.#Lu,#H.#Wang,#N.#Mamoulis,#W.#Tu,#and#D.#W.#Cheung( 28! ( ! Location6Aware(Online(Learning(for(Top6k(Hashtag(Recommendation( ! R.#Palovics,#P.#Szalai,#L.#Kocsis,#J.#Pap,#E.#Frigo,#and#A.#A.#Benczur( 36! ( ! From(Sensors(to(Songs:(A(Learning6Free(Novel(Music(Recommendation( ! System(using(Contextual(Sensor(Data( A.#Sen#and#M.#Larson( 40! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Copyright!©!2015!for!the!individual!papers!by!the!papers'!authors.!Copying!permitted!for! private!and!academic!purposes.!This!volume!is!published!and!copyrighted!by!its!editors.!