Senior Lecturer / Fellow of
The Australian National University.
I'm also affiliated with National ICT Australia (NICTA).
my firstname dot lastname at anu dot edu dot au
2013-03 Deadlines approaching! Please considering submitting a Tutorial to ACM Multimedia 2013 and a Workshop to ACML 2013.
2012-11 ANU Reporter published a story about my work on picture tags here. My college posted a news brief about the microblog event magazine here.
2012-11 We won the "multimodal award" for ACM Multimedia Grand Challenge Solutions. Congratulations Peng, Zhiyu and Hao from Tsinghua.
2012-10 An AOARD project just started, look forward to an exciting exploration into social media.
My research focus broadly on innovative use and design of machine learning algorithms and systems, especially on spatial, temporal and multi-relational graph data.
Several areas of recent work include:
Multimedia understanding and retrieval
Social media tracking and modeling
Spatial-temporal data analysis on urban events
Details can be found from the sample projects below and the list of publications.
I am always looking for curious and motivated strong students to collaborate on various fun projects. Frequently needed information about joining my research group is here.
Selected Recent Projects
Visual Memes in Social Media: Tracking Real-world News in YouTube Videos
Lexing Xie, Apostol Natsev, Matthew Hill, John Kender, John R Smith
ACM Multimedia 2011 and ICWSM 2011
ImageHive: Interactive Content-Aware Image Summarization
IEEE Computer Graphics and Applications, pp. 46-55, January/February, 2012
Probabilistic Visual Concept Trees
Lexing Xie, Rong Yan, Jelena Tešić, Apostol Natsev, John R Smith
ACM Multimedia 2010, pp. 867-870