Hits ?▲ |
Authors |
Title |
Venue |
Year |
Link |
Author keywords |
160 | In Kee Kim, Sung-Ho Jang, Jong Sik Lee |
QLP-LBS: Quantization and Location Prediction-Based LBS for Reduction of Location Update Costs. |
ISPA Workshops |
2007 |
DBLP DOI BibTeX RDF |
|
134 | Heemin Kim, Jungwook Song, Miradham Kamilov, Sunyoung Han |
Real-time u-LBS system for mobile vehicle in 3G networks. |
Mobility Conference |
2008 |
DBLP DOI BibTeX RDF |
real-time LBS, LBS, HSDPA, 3G network, wibro, HSUPA |
119 | Jong Woo Kim, Ju-Yeon Kim, Chang Soo Kim |
Semantic LBS: Ontological Approach for Enhancing Interoperability in Location Based Services. |
OTM Workshops (1) |
2006 |
DBLP DOI BibTeX RDF |
|
108 | Ying Chen 0004, Wei Lu, Xiaoyan Chen, Lihua Tang, Fangyan Rao, Qingbo Wang, Long Zhang |
Location Aware Messaging - Integrating LBS Middleware and Converged Services. |
ICEBE |
2005 |
DBLP DOI BibTeX RDF |
|
105 | Sangwook Bae, Keo Oudom, Young-Guk Ha, Sunyoung Han |
LBS system using online map in 3G networks environment. |
ICIS |
2009 |
DBLP DOI BibTeX RDF |
emergency rescue system, LBS, 3G networks, WIBRO, online map |
97 | Erich Wilmersdorf |
Providing an Information Infrastructure for Map Based LBS - The approach of the City of Vienna. |
Location Based Services and TeleCartography |
2007 |
DBLP DOI BibTeX RDF |
|
93 | Renato Filjar, Lidija Busic, Sasa Desic, Darko Huljenic |
LBS Position Estimation by Adaptive Selection of Positioning Sensors Based on Requested QoS. |
NEW2AN |
2008 |
DBLP DOI BibTeX RDF |
Location Based Services (LBS) QoS Positioning Sensor Selection |
89 | Shuchih Ernest Chang, Ying-Jiun Hsieh, Tzong-Ru Lee, Chun-Kuei Liao, Shiau-Ting Wang |
A User Study on the Adoption of Location Based Services. |
APWeb/WAIM Workshops |
2007 |
DBLP DOI BibTeX RDF |
|
77 | Alexandros Tzannes, George C. Caragea, Rajeev Barua, Uzi Vishkin |
Lazy binary-splitting: a run-time adaptive work-stealing scheduler. |
PPoPP |
2010 |
DBLP DOI BibTeX RDF |
load balancing, dynamic scheduling, work stealing, nested parallelism, thread scheduling |
77 | Nectaria Tryfona, Dieter Pfoser |
Data Semantics in Location-Based Services. |
J. Data Semantics |
2005 |
DBLP DOI BibTeX RDF |
|
74 | Jonathan Raper |
Design constraints on operational LBS. |
Location Based Services and TeleCartography |
2007 |
DBLP DOI BibTeX RDF |
|
74 | Balqies Sadoun, Omar Al-Bayari |
LBS and GIS Technology Combination and Applications. |
AICCSA |
2007 |
DBLP DOI BibTeX RDF |
|
74 | JungHee Jo, KyoungWook Min, YongJoon Lee |
Architecture of an LBS Platform to Support Privacy Control for Tracking Moving Objects in a Ubiquitous Environments. |
ICUCT |
2006 |
DBLP DOI BibTeX RDF |
|
74 | Namje Park, Howon Kim 0001, Kyoil Chung, Sungwon Sohn, Dongho Won |
XML-Signcryption Based LBS Security Protocol Acceleration Methods in Mobile Distributed Computing. |
ICCSA (5) |
2006 |
DBLP DOI BibTeX RDF |
|
74 | José Costa-Requena, Inmaculada Espigares |
Consistent LBS Solution in Next Generations of Mobile Internet. |
ICPADS |
2002 |
DBLP DOI BibTeX RDF |
|
70 | Hele-Mai Haav, Aivi Kaljuvee, Martin Luts, Toivo Vajakas |
Ontology-Based Retrieval of Spatially Related Objects for Location Based Services. |
OTM Conferences (2) |
2009 |
DBLP DOI BibTeX RDF |
Ontology-based information retrieval, domain ontology modelling, mobile IS, personalised LBS, semantic LBS |
66 | Jae-Chul Kim, Jai Ho Lee, Ju-Wan Kim, Jong Hyun Park |
Middleware Platform for Ubiquitous Location Based Service. |
OTM Workshops (1) |
2006 |
DBLP DOI BibTeX RDF |
|
66 | Tobias Kölsch, Lothar Fritsch, Markulf Kohlweiss, Dogan Kesdogan |
Privacy for Profitable Location Based Services. |
SPC |
2005 |
DBLP DOI BibTeX RDF |
|
66 | Jong Woo Kim, Chang Soo Kim, Arvind Gautam, Yugyung Lee |
Location-Based Tour Guide System Using Mobile GIS and Web Crawling. |
W2GIS |
2004 |
DBLP DOI BibTeX RDF |
|
65 | Mehrnaz Ataei, Christian Kray |
Ephemerality Is the New Black: A Novel Perspective on Location Data Management and Location Privacy in LBS. |
LBS |
2016 |
DBLP DOI BibTeX RDF |
|
65 | Min Lu 0003, Masatoshi Arikawa, Atsuyuki Okabe |
Classes for Creating Location-Based Audio Tour Content: A Case of User-Generated LBS Education to University Students. |
LBS |
2016 |
DBLP DOI BibTeX RDF |
|
65 | Yi Li, Junhua Wang, Lanfang Zhang |
LBS-Based Dilemma Zone Warning System at Signalized Intersection. |
LBS |
2014 |
DBLP DOI BibTeX RDF |
|
64 | Ghassan Al-Qaimari, Shane Fernando |
Location-aware applications: evaluating the ease of use and ease of learning. |
IWCMC |
2006 |
DBLP DOI BibTeX RDF |
ease of learning, mobile devices, LBS, user interface design, usability testing, WAP, ease of use, wireless applications |
63 | Gabriel Ghinita |
Understanding the privacy-efficiency trade-off in location based queries. |
SPRINGL |
2008 |
DBLP DOI BibTeX RDF |
query privacy, location anonymity |
63 | Namje Park, Howon Kim 0001, Kyoil Chung, Seungjoo Kim, Dongho Won |
XKMS-Based Key Management for Open LBS in Web Services Environment. |
AWIC |
2005 |
DBLP DOI BibTeX RDF |
|
63 | Kiyoung Moon, Namje Park, Kyoil Chung, Sungwon Sohn, Jaecheol Ryou 0001 |
Security Frameworks for Open LBS Based on Web Services Security Mechanism. |
ISPA Workshops |
2005 |
DBLP DOI BibTeX RDF |
|
63 | Woo-Jin Choi, Sirin Tekinay |
Location-Based Service Provisioning for Next Generation Wireless Networks. |
Int. J. Wirel. Inf. Networks |
2003 |
DBLP DOI BibTeX RDF |
Location-based service (LBS), Geolocation, Geocasting |
55 | Iris A. Junglas, Christiane Spitzmüller |
A Research Model for Studying Privacy Concerns Pertaining to Location-Based Services. |
HICSS |
2005 |
DBLP DOI BibTeX RDF |
|
55 | Jong Woo Kim, Ju-Yeon Kim, Hyun-Suk Hwang, Sung-Seok Park, Chang Soo Kim, Sung-gi Park |
The Semantic Web Approach in Location Based Services. |
ICCSA (2) |
2005 |
DBLP DOI BibTeX RDF |
|
55 | Maximilian Zündt, Girjia Deo, Mirko Naumann, Markus Ludwig |
De-centralized location management: minimizing privacy concerns for location based services. |
ITRE |
2005 |
DBLP DOI BibTeX RDF |
|
55 | Hubert Ka Yau Leung, Ioana Burcea, Hans-Arno Jacobsen |
Modeling location-based services with subject spaces. |
CASCON |
2003 |
DBLP BibTeX RDF |
|
53 | Ying Chen 0004, Xiaoyan Chen, Xiaocheng Ding, Fangyan Rao, Dong Liu 0014 |
BlueLocator: Enabling Enterprise Location-Based Services. |
Mobile Data Management |
2002 |
DBLP DOI BibTeX RDF |
privacy control, location-based services, LBS |
52 | MoonBae Song, Hyunseung Choo |
Towards Location-Based Real-Time Monitoring Systems in u-LBS. |
ICCSA (2) |
2009 |
DBLP DOI BibTeX RDF |
|
52 | Nikos Pelekis, Elias Frentzos, Nikos Giatrakos, Yannis Theodoridis |
HERMES: aggregative LBS via a trajectory DB engine. |
SIGMOD Conference |
2008 |
DBLP DOI BibTeX RDF |
location-based services, trajectories, moving object databases |
52 | Zhang Yun, Gao Ren, Fuling Bian |
The Spatial Data Transmission Model in LBS Based on Cognitive Networks. |
CSSE (4) |
2008 |
DBLP DOI BibTeX RDF |
|
52 | Nayot Poolsappasit, Indrakshi Ray |
Towards a scalable model for location privacy. |
SPRINGL |
2008 |
DBLP DOI BibTeX RDF |
privacy, access control, location privacy |
52 | Matthew McMahon, Chris Steketee |
Investigation of Proposed Applications for LBS Enabled Mobile Handsets. |
ICMB |
2006 |
DBLP DOI BibTeX RDF |
|
52 | David Tilson, Kalle Lyytinen, Ryan J. Baxter |
A Framework for Selecting a Location Based Service (LBS) Strategy and Service Portfolio. |
HICSS |
2004 |
DBLP DOI BibTeX RDF |
|
49 | Amirreza Masoumzadeh 0001, James Joshi, Hassan A. Karimi |
LBS (k, T)-anonymity: a spatio-temporal approach to anonymity for location-based service users. |
GIS |
2009 |
DBLP DOI BibTeX RDF |
privacy, anonymity, LBS, k-anonymity |
46 | Peter Kiefer, Haosheng Huang, Nico Van de Weghe, Martin Raubal (eds.) |
Progress in Location Based Services 2018, LBS 2018, Zurich, Switzerland, 15-17 January 2018 |
LBS |
2018 |
DBLP DOI BibTeX RDF |
|
46 | Feiyan Yu, David A. McMeekin, Lesley M. Arnold, Geoff A. W. West |
Semantic Web Technologies Automate Geospatial Data Conflation: Conflating Points of Interest Data for Emergency Response Services. |
LBS |
2018 |
DBLP DOI BibTeX RDF |
|
46 | Ilkcan Keles, Christian S. Jensen, Simonas Saltenis |
Extracting Rankings for Spatial Keyword Queries from GPS Data. |
LBS |
2018 |
DBLP DOI BibTeX RDF |
|
46 | Rade Stanojevic, Sofiane Abbar, Saravanan Thirumuruganathan, Gianmarco De Francisci Morales, Sanjay Chawla, Fethi Filali, Ahid Aleimat |
Road Network Fusion for Incremental Map Updates. |
LBS |
2018 |
DBLP DOI BibTeX RDF |
|
46 | Andreas Sedlmeier, Sebastian Feld |
Discovering and Learning Recurring Structures in Building Floor Plans. |
LBS |
2018 |
DBLP DOI BibTeX RDF |
|
46 | Germán M. Mendoza-Silva, Joaquín Torres-Sospedra, Joaquín Huerta |
Locations Selection for Periodic Radio Map Update in WiFi Fingerprinting. |
LBS |
2018 |
DBLP DOI BibTeX RDF |
|
46 | Dominik Bucher, David Rudi, René Buffat |
Captcha Your Location Proof - A Novel Method for Passive Location Proofs in Adversarial Environments. |
LBS |
2018 |
DBLP DOI BibTeX RDF |
|
46 | Martin Werner 0001 |
Topology Extraction from Occupancy Grids. |
LBS |
2018 |
DBLP DOI BibTeX RDF |
|
46 | Eva Nuhn, Sabine Timpf |
An Overall Framework for Personalised Landmark Selection. |
LBS |
2018 |
DBLP DOI BibTeX RDF |
|
46 | Andreas Sackl, Sarah-Kristin Thiel, Peter Fröhlich 0003, Manfred Tscheligi |
"Thanks for Your Input. We Will Get Back to You Shortly." How to Design Automated Feedback in Location-Based Citizen Participation Systems. |
LBS |
2018 |
DBLP DOI BibTeX RDF |
|
46 | Andrea Viel, Andrea Brunello, Angelo Montanari, Federico Pittino |
An Original Approach to Positioning with Cellular Fingerprints Based on Decision Tree Ensembles. |
LBS |
2018 |
DBLP DOI BibTeX RDF |
|
46 | Joey Ying Lee, Ming-Hsiang Tsou |
Mapping Spatiotemporal Tourist Behaviors and Hotspots Through Location-Based Photo-Sharing Service (Flickr) Data. |
LBS |
2018 |
DBLP DOI BibTeX RDF |
|
46 | Caifa Zhou, Andreas Wieser |
Jaccard Analysis and LASSO-Based Feature Selection for Location Fingerprinting with Limited Computational Complexity. |
LBS |
2018 |
DBLP DOI BibTeX RDF |
|
46 | Hartwig H. Hochmair, Levente Juhász, Sreten Cvetojevic |
Data Quality of Points of Interest in Selected Mapping and Social Media Platforms. |
LBS |
2018 |
DBLP DOI BibTeX RDF |
|
46 | Joris van den Berg, Barend Köbben, Sander van der Drift, Luc J. J. Wismans |
Towards a Dynamic Isochrone Map: Adding Spatiotemporal Traffic and Population Data. |
LBS |
2018 |
DBLP DOI BibTeX RDF |
|
46 | David Jonietz, Dominik Bucher |
Continuous Trajectory Pattern Mining for Mobility Behaviour Change Detection. |
LBS |
2018 |
DBLP DOI BibTeX RDF |
|
46 | Robert Jackermeier, Bernd Ludwig |
Task-Oriented Evaluation of Indoor Positioning Systems. |
LBS |
2018 |
DBLP DOI BibTeX RDF |
|
46 | Georg Gartner, Haosheng Huang (eds.) |
Progress in Location-Based Services 2016, LBS 2016, Vienna, Austria, November 14-16, 2016, Selected Papers |
LBS |
2017 |
DBLP DOI BibTeX RDF |
|
46 | Rajchandar Padmanaban, Jakub Krukar |
Increasing the Density of Local Landmarks in Wayfinding Instructions for the Visually Impaired. |
LBS |
2016 |
DBLP DOI BibTeX RDF |
|
46 | Conrad Franke, Jürgen Schweikart |
Investigation of Landmark-Based Pedestrian Navigation Processes with a Mobile Eye Tracking System. |
LBS |
2016 |
DBLP DOI BibTeX RDF |
|
46 | Alexander Mraz, Abdenour Nazef |
Development of a Road Deficiency GIS Using Data from Automated Multi-sensor Systems. |
LBS |
2016 |
DBLP DOI BibTeX RDF |
|
46 | Kris Van Erum, Johannes Schöning |
SubwayAPPS: Using Smartphone Barometers for Positioning in Underground Transportation Environments. |
LBS |
2016 |
DBLP DOI BibTeX RDF |
|
46 | Dominik Bucher, David Jonietz, Martin Raubal |
A Heuristic for Multi-modal Route Planning. |
LBS |
2016 |
DBLP DOI BibTeX RDF |
|
46 | Sebastian Meier |
Enhancing Location Recommendation Through Proximity Indicators, Areal Descriptors, and Similarity Clusters. |
LBS |
2016 |
DBLP DOI BibTeX RDF |
|
46 | Günther Retscher, Florian Roth |
Wi-Fi Fingerprinting with Reduced Signal Strength Observations from Long-Time Measurements. |
LBS |
2016 |
DBLP DOI BibTeX RDF |
|
46 | Pavel Andreevich Samsonov |
Connecting the Dots: Informing Location-Based Services of Space Usage Rules. |
LBS |
2016 |
DBLP DOI BibTeX RDF |
|
46 | Jörg Roth |
Efficient Computation of Bypass Areas. |
LBS |
2016 |
DBLP DOI BibTeX RDF |
|
46 | Sarah-Kristin Thiel, Peter Fröhlich 0003 |
Gamification as Motivation to Engage in Location-Based Public Participation? |
LBS |
2016 |
DBLP DOI BibTeX RDF |
|
46 | Sebastian Feld, Hao Lyu, Andreas Keler |
Identifying Divergent Building Structures Using Fuzzy Clustering of Isovist Features. |
LBS |
2016 |
DBLP DOI BibTeX RDF |
|
46 | Germán M. Mendoza-Silva, Joaquín Torres-Sospedra, Joaquín Huerta, Raúl Montoliu, Fernando Benitez-Paez, Oscar Belmonte |
Situation Goodness Method for Weighted Centroid-Based Wi-Fi APs Localization. |
LBS |
2016 |
DBLP DOI BibTeX RDF |
|
46 | Mathias Jahnke, Linfang Ding, Katre Karja, Shirui Wang |
Identifying Origin/Destination Hotspots in Floating Car Data for Visual Analysis of Traveling Behavior. |
LBS |
2016 |
DBLP DOI BibTeX RDF |
|
46 | Hanna-Marika Halkosaari, Mikko Rönneberg, Mari Laakso, Pyry Kettunen, Juha Oksanen, Tapani Sarjakoski |
Concept Design of #hylo - Geosocial Network for Sharing Hyperlocal Information on a Map. |
LBS |
2016 |
DBLP DOI BibTeX RDF |
|
46 | Rui Li 0023 |
Effects of Visual Variables on the Perception of Distance in Off-Screen Landmarks: Size, Color Value, and Crispness. |
LBS |
2016 |
DBLP DOI BibTeX RDF |
|
46 | Karl Rehrl, Richard Brunauer, Simon Gröchenig, Eva Lugstein |
Generation of Meaningful Location References for Referencing Traffic Information to Road Networks Using Qualitative Spatial Concepts. |
LBS |
2016 |
DBLP DOI BibTeX RDF |
|
46 | Andreas Ettlinger, Hans-Berndt Neuner, Thomas Burgess |
Smartphone Sensor-Based Orientation Determination for Indoor-Navigation. |
LBS |
2016 |
DBLP DOI BibTeX RDF |
|
46 | José Miguel Santana, Jochen Wendel, Agustín Trujillo, José Pablo Suárez, Alexander Simons, Andreas Koch |
Multimodal Location Based Services - Semantic 3D City Data as Virtual and Augmented Reality. |
LBS |
2016 |
DBLP DOI BibTeX RDF |
|
46 | Georg Gartner, Haosheng Huang (eds.) |
Progress in Location-Based Services 2014, LBS 2014, Vienna, Austria, November 26-28, 2014, Selected Papers |
LBS |
2015 |
DBLP DOI BibTeX RDF |
|
46 | Hao Lyu, Zhonghai Yu, Liqiu Meng |
A Computational Method for Indoor Landmark Extraction. |
LBS |
2014 |
DBLP DOI BibTeX RDF |
|
46 | Ioannis Delikostidis, Holger Fritze, Thore Fechner, Christian Kray |
Bridging the Gap Between Field- and Lab-Based User Studies for Location-Based Services. |
LBS |
2014 |
DBLP DOI BibTeX RDF |
|
46 | Xiujuan Li, Yan Zhou 0006, Hanjiang Xiong |
3D Indoor Location on Mobile Phones Using Embedded Sensors and Close-Range Photogrammetry. |
LBS |
2014 |
DBLP DOI BibTeX RDF |
|
46 | Wangshu Wang |
Using Location-Based Social Media for Ranking Individual Familiarity with Places: A Case Study with Foursquare Check-in Data. |
LBS |
2014 |
DBLP DOI BibTeX RDF |
|
46 | Anahid Basiri, Terry Moore, Chris Hill, Paul Bhatia |
Challenges of Location-Based Services Market Analysis: Current Market Description. |
LBS |
2014 |
DBLP DOI BibTeX RDF |
|
46 | Bernd Resch, Anja Summa, Günther Sagl, Peter Zeile, Jan-Philipp Exner |
Urban Emotions - Geo-Semantic Emotion Extraction from Technical Sensors, Human Sensors and Crowdsourced Data. |
LBS |
2014 |
DBLP DOI BibTeX RDF |
|
46 | Hangbin Wu, Chun Liu 0003, Junhua Wang, Lianbi Yao, Shuhang Zhang, Yi Li, Zhengning Li, Cheng Liu, Shou'en Fang |
ATSSS: An Active Traffic Safety Service System in Pudong New District, Shanghai, China. |
LBS |
2014 |
DBLP DOI BibTeX RDF |
|
46 | Adrian C. Prelipcean, Falko Schmid, Takeshi Shirabe |
A Space Time Alarm. |
LBS |
2014 |
DBLP DOI BibTeX RDF |
|
46 | Enrico Köppe, Daniel Augustin, Tabea Wilk, Andreas Subaric-Leitis, Achim Liers, Jochen H. Schiller |
Application of the Inertial Navigation System 3D-Self-Calibration-Method for the Minimization of the Measurement Uncertainty. |
LBS |
2014 |
DBLP DOI BibTeX RDF |
|
46 | André Dittrich, Daniela Richter, Christian Lucas |
Analysing the Usage of Spatial Prepositions in Short Messages. |
LBS |
2014 |
DBLP DOI BibTeX RDF |
|
46 | Khuong An Nguyen, Zhiyuan Luo 0001, Chris Watkins |
On the Feasibility of Using Two Mobile Phones and WLAN Signal to Detect Co-Location of Two Users for Epidemic Prediction. |
LBS |
2014 |
DBLP DOI BibTeX RDF |
|
46 | Andreas Hackeloeer, Klaas Klasing, Jukka Matthias Krisp, Liqiu Meng |
Road Network Conflation: An Iterative Hierarchical Approach. |
LBS |
2014 |
DBLP DOI BibTeX RDF |
|
46 | Anita Graser, Markus Straub, Melitta Dragaschnig |
Is OSM Good Enough for Vehicle Routing? A Study Comparing Street Networks in Vienna. |
LBS |
2014 |
DBLP DOI BibTeX RDF |
|
46 | Jukka Matthias Krisp, Mathias Jahnke, Hao Lyu, Florian Fackler |
Visualization and Communication of Indoor Routing Information. |
LBS |
2014 |
DBLP DOI BibTeX RDF |
|
46 | Seong Yun Cho |
Range Domain IMM Filtering with Additional Signal Attenuation Error Mitigation of Individual Channels for WLAN RSSI-Based Position-Tracking. |
LBS |
2014 |
DBLP DOI BibTeX RDF |
|
46 | Farid Karimipour, Omid Azari |
Citizens as Expert Sensors: One Step Up on the VGI Ladder. |
LBS |
2014 |
DBLP DOI BibTeX RDF |
|
46 | Jian Yang, Liqiu Meng |
Feature Selection in Conditional Random Fields for Map Matching of GPS Trajectories. |
LBS |
2014 |
DBLP DOI BibTeX RDF |
|
46 | Carolin von Groote-Bidlingmaier, David Jonietz, Sabine Timpf |
Calculating Route Probability from Uncertain Origins to a Destination. |
LBS |
2014 |
DBLP DOI BibTeX RDF |
|
44 | Chi-Yin Chow, Mohamed F. Mokbel |
Privacy in location-based services: a system architecture perspective. |
ACM SIGSPATIAL Special |
2009 |
DBLP DOI BibTeX RDF |
|
44 | Kar Way Tan, Yimin Lin, Kyriakos Mouratidis |
Spatial Cloaking Revisited: Distinguishing Information Leakage from Anonymity. |
SSTD |
2009 |
DBLP DOI BibTeX RDF |
|
44 | Agusti Solanas, Antoni Martínez-Ballesté |
Privacy Protection in Location-Based Services Through a Public-Key Privacy Homomorphism. |
EuroPKI |
2007 |
DBLP DOI BibTeX RDF |
public-key privacy homomorphism, location privacy |
44 | Kuo-Wei Su, Ching-Chang Lee, Li-Kai Chen |
An Empirical Study of Developing an Adaptive Location-Based Services Interface on Smartphone. |
HCI (6) |
2007 |
DBLP DOI BibTeX RDF |
Map View Display, List View Display, Small Screen Interface, Location-Based Service, Point of Interest, Adaptive Visualization |
44 | Debopam Acharya, Vijay Kumar 0002, Gi-Chul Yang |
DAYS mobile: a location based data broadcast service for mobile users. |
SAC |
2007 |
DBLP DOI BibTeX RDF |
location based services, wireless data broadcast, data staging |
44 | Maria Luisa Damiani, Elisa Bertino |
Architectural issues for a location-aware role-based access control system. |
SAC |
2006 |
DBLP DOI BibTeX RDF |
location-based services, RBAC, roles, spatial context |