The Third ACM SIGSPATIAL International Workshop on
Location-Based Social Networks (LBSN 2011)
– Held in conjunction with ACM SIGSPATIAL GIS 2011
November 1, 2011 - Chicago, Illinois, USA
Website:  http://lbsn2011.cs.umn.edu/

Organizers
General Co-Chairs:
Christian S. Jensen, Aarhus University, Denmark.
Wang-Chien Lee, Pennsylvania State University, USA
 
Program Co-Chairs:
Mohamed F. Mokbel, University of Minnesota, USA
Yu Zheng, Microsoft Research Asia, China

Aims and Scopes
Social networks have been prevalent on the Internet and become a hot research topic attracting many professionals from a variety of fields. By adding a location dimension, we can bring online social networks back to the physical world and share our real-life experiences in the virtual world conveniently. In location Based Social Networks (LBSN), people cannot only track and share location-related information with each other via either mobile devices or desktop computers, but also leverage collaborative social knowledge learned from user-generated and location-related contents. As location is one of the most important properties in people’s daily lives, LBSN will bridge the gap between online societies and the physical world and enable a lot of novel applications changing the way we live, such as travel planning, location/friend recommendations, community discovery, human mobility modeling and user activity analysis.
The objective of this workshop is to provide professionals, researchers, and technologists with a single forum where they can discuss and share the state-of-the-art of LBSN development and applications, present their ideas and contributions, and set future directions in emerging innovative research for location based social networks.
Topics of interest include but not limited to the following:
l  Spatial and spatio-temporal data mining in user-centric scenarios
l  Moving object tracking, indexing and retrieval for social applications
l  Trajectory compressing and simplification
l  Trajectory mining, pattern recognition, and knowledge discovery
l  Location privacy and security
l  Uncertainty of location and trajectory in modeling, inference, and querying
l  Activity recognition and sensing for social applications
l  Location identification from sensor data for social applications
l  Semantic meaning and knowledge discovery from location-related data
l  User similarity computing based on location-related information
l  Location and friend recommendations
l  Hot spots, significant places, and interesting locations detection
l  Location-tagged media sharing and mining
l  Human-computer interaction in location-based social networks
l  Mobile and ubiquitous computing for location-based social networks
l  Information retrieval in location-based social networks
 
Important Dates:
Paper submission due: July 21, 2011 (PCT 11:59:59PM).
Notification of acceptance: August 22, 2011
Camera ready due: Sept. 2, 2011
Workshop day: Nov. 1, 2011
 
Submission
We solicit two kinds of submissions:
l  Full paper, up to 8 pages
l  Short paper, up to 4 pages.
All manuscripts should be submitted in a single PDF file including all content, figures, tables, and references, following ACM camera-ready templates, via the submission website before the submission deadline. Each paper will be assigned to three reviewers for a peer review. All accepted papers will be included in the ACM digital library as well as EI index.

 
Award
We will set one best paper award according to the review results and presentation of a paper. 
 
Program Committee:
Jing (David) Dai, IBM T.J. Watson, USA
Xin Chen, NAVTEQ, USA
Takahiro Hara, Osaka University, Japan
Yan Huang, University of North Texas
Ralf Hartmut Guting, University of Hagen, Germany
Yoshiharu Ishikawa, Nagoya University, Japan
Hassan Karimi, Pittsburgh University, USA
Marek Kowalkiewicz, SAP Research, Australia
WeiShinn Ku, Auburn University, USA
John Krumm, Microsoft Research Redmond, USA
Chang-Tien Lu, Virginia Tech, USA
Nikos Mamoulis, University of Hong Kong, Hong Kong
Shawn Newsam, UC Merced, USA
Wen-Chih Peng, National Chiao Tung University, Taiwan
Peter Scheuermann, Northwestern University, USA
Cyrus Shahabi, University of Southern California, USA
Christoph Schlieder, Bamberg University, Germany
Guangzhong Sun, University of Science and Technology of China, China
Xueyan Tang, Nanyang Technological University, Singapore
Vincent S. Tseng, National Cheng Kung University, Taiwan
Xing Xie, Microsoft Research Asia, China
Jianliang Xu, Hong Kong Baptist University, Hong Kong
Qiang Yang, Hong Kong University of Science and Technology, Hong Kong
Moustafa Youssef, E_JUST University, Egypt
Yang Yue, Wuhan University, China
Man Lung Yiu, Hong Kong Polytechnic University
Baihua Zheng, Singapore Management University, Singapore
Xiaofang Zhou, University of Queensland, Australia, zxf@uq.edu.au