We have successfully organized the location-based social media conference, with more than 50 participants, three keynote speakers, and two pre-conference workshops focusing on hands-on social media data acquisition and visual analytics, and a NSF project; more details can be found at this website:

 Currently, we are editing a special issue on “new insights into location-based social media data” with the international journal Computers, Environment, and Urban Systems.

The third ICA workshop was held in Gävle, August 6 - 7, 2009, in conjunction with the 4th Nordic Summer school in Geographic Information Science, August 3-7, 2009. There were 24 parallel talks and two plenary talks, attracting over 70 participants. For more details, please refer to (
ICA Workshop2009). You can go to Photos on flickr to view and download the large size photos(by clicking each photo you want to download, then click "All sizes" on the left top of the picture, and then choose "Download the Large size"). Some snapshots from the event are as follows:

The second ICA workshop was held in Athens, GA, USA, July 12 -13, 2007 with the central theme on “spatial structure and dynamics of urban environments”. There were 24 presentations in 4 parallel sessions, and one plenary session. Professor Michael Batty delivered a keynote entitled “scaling, rank-size and allometry in the geometry of large cities”. Some of PPT slides are dumped at the workshop website ( for freely or restricted access. 

The first ICA workshop held on the 8th of July 2006 in Vienna attracts about 30 participants. 15 papers were presented at the workshop (, where PPT slides and the workshop proceedings are archived. Following peer-review and revision processes, 7 papers were selected for a special issue with the international journal Computers, Environment and Urban Systems, 31(5).