Senior Lecturer / Fellow of
The Australian National University.
I'm also affiliated with NICTA.
my firstname dot lastname at anu dot edu dot au
2013-10 "Picture Tags and World Knowledge", our paper on learning tag relations from 5M Flickr images, is just presented at ACM Multimedia. Paper, slides, demo, and some data are here on the project page.
2013-10 Slides available for my invited talk "Events and Meme Popularity in Social Media" at the event workshop at ACM MM in Barcelona.
2013-09 "Social Affinity Filtering", our paper on a new approach for social recommendation, will appear in the inaugural edition of of ACM COSN, here is the paper preprint
2013-07 Rob Ackland, Jamsheed Shorish, Paul Thomas and I taught a fun class on Computational Social Science, at Beihang University, thanks to ACSRF
2013-07 ACML 2013 will have 3 tutorials and 2 half-day workshops. Look forward to!
2013-05 Recent papers: Visual Memes at IEEE Trans. on Multimedia (arxiv) and LDA for Tweets at SIGIR (pdf).
... older news is archived here.
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.
Machine learning and applications.
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
Picture Tags and World Knowledge: Learning Tag Relations from Visual Semantic Sources
Lexing Xie, Xuming He
ACM Multimedia 2013, Oct 2013 (full paper)
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