基于情境感知的服务系统.pdf

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1、2009年第6期计算机系统应用基于情境感知的服务系统①JorgenStaunstrup(哥本哈根信息技术大学哥本哈根DK-2300)童缙郁莲李伟平林慧苹褚伟杰(北京大学软件与微电子学院北京102600)JohnPaulinHansen，ArneGlenstrup，ThomasHildebrandt(哥本哈根信息技术大学哥本哈根DK一2300)ServicesinContextJ0rgenStaunstrup(ITUniversityofCopenhagen，CopenhagenSDK一2300)FrankTung，LianYu，Weipin

2、gLi，HuipingLin，WeijieChu(SchoolofSoftwareandMicroelectronics，PekingUniversity，Beijing102600)JohnPaulinHansen，ArneGlenstrup，ThomasHildebrandt(ITUniversityofCopenhagen，CopenhagenSDK-2300)Abstract：Thepapergivesanoverviewofarecentlystartedresearchprojectaddressingthequestion：C

3、ancontextbeexploitedtoaddvaluetoIT-services?Beyondtoday’Sway—findingservicesbasedonGPSandmaps，webelievethereisanewclassofcontext—awarepervasiveservicesmakinggooduseofabroadrangeofcontextinformation(e．g．identity，timeofday，temperature，historyaswellasrelativelocationoffriends

4、andbelongings)．LastbutnotleastwebelieveonecanfindwaysofaddingvaluetoIT-servicesbyusingdisembodiedconversationalagentsbasedonvoice，soundsandvisualsignalsintegratedintotheenvironment，insteadofbeingguidedbyexplicitdirectionsshownonadisplay．Theprojectaimsatgivingbothnewfundame

5、ntalinsightaboutthetheorybehindIT—services，theirarchitectureanduserinterfacesandatbuildinganumberofprototypesdemonstratinginnovativecontext-awarepervasiveIT—services．Keywords：1T．services；context．awareness；service．orientedarchitecture；contextrepresentationandinnovativeuseri

6、nterfaces1Introductiondriving)，isusedtoselectexactlywhichmapscale，positionandroutestosuggest．Inthisexample，contextThecontextofanIT．servicecouldbephysicalinformation(speed，location，user—id．，drivinghabitsandinformationaboutlocation。time，environmentofuserstime)addsvaluebyfilt

7、eringtheinformationgiventotheandorkeycomponentsdeliveringtheservice；itcoulduser；forexample，asmallmapwithonlyrelevantalsobeinformationabouttheidentityandsocialcontextinformationreflectingthehabitsoftheuserwholikestowheretheserviceiscurrentlyused．oritcouldbeinformationaboutu

8、sepatterns．AnexamplewouldbeagetextraexerciseinthemorningbytakingalongerGPSsystemwherecurr