Invited Talks
Identifying Experts and Fighting Spams on the Social Web
Tanaka Laboratory, Department of Social Informatics, Kyoto University, Japan, November 2009.
Ranking Users in a Social Space: A Case Study of Collective Semantics
Department of Computer Science and Engineering, The Chinese University of Hong Kong, November 2009.
User Behaviours and Collective Semantics
NTT Communication Science Laboratories, Kyoto, Japan, August 2009.
Telling Experts from Spammers: Expertise Ranking in Folksonomies
Search in Social Media, Workshop in SIGIR 2009, July 2009.
Telling Experts from Spammers: Expertise Ranking in Folksonomies
Decentralized Information Group, CSAIL, MIT, Boston, USA, July 2009.


Conference and Workshop Presentations
Capturing Implicit Influence in Online Social Sharing
HT'10, Toronto, Canada, June, 2010.
Analysis of Strategies for Item Discovery in Social Sharing on the Web
WebSci'10, Raleigh, NC, USA, April, 2010.
User-induced Links in Collaborative Tagging Systems
CIKM 2009, Hong Kong, China, November, 2009.
Telling Experts from Spammers: Expertise Ranking in Folksonomies
SIGIR 2009, Boston, USA, July 2009.
Contextualising Tags in Collaborative Tagging Systems
ACM Hypertext 2009, Torino, Italy, June 2009.
Providing Access Controls to Online Photo Albums Based on Tags and Linked Data
Social Semantic Web, AAAI Spring Symposium, Stanford, USA, March 2009.
On Measuring Expertise in Collaborative Tagging Systems
WebSci'09, Athens, Greece, March 2009.
A k-Nearest-Neighbour Method for Classifying Web Search Results with Data in Folksonomies
WI 2009, Sydney, Australia, December 2009
Discovering and Modelling Multiple Interests of Users in Collaborative Tagging Systems
WPRRS 2008 (in WI 2008), Sydney, Australia, December 2009.
Collective User Behaviour and Tag Contextualisation in Folksonomies
2008 WI-IAT Doctoral Workshop (in WI 2008), Sydney, Australia, December 2009.
A Study of User Profile Generation from Folksonomies
SWKM2008 (in WWW 2008), Beijing, China, April 2008.
Web Search Disambiguation by Collaborative Tagging
ESAIR 2008 (in ECIR 2008), Glasgow, UK, April 2008.
Understanding the Semantics of Ambiguous Tags in Folksonomies
ESOE 2007 (in ISWC+ASWC 2007), Busan, Korea, November 2007.
Tag Meaning Disambiguation through Analysis of Tripartite Structure of Folksonomies
CISW 2007 (in WI 2007), Silicon Valley, USA, November 2007.


Poster Presentations
User-Induced Hyperlinks in Collaborative Tagging Systems
ACM Student Research Competition, ACM Hypertext 2009, Torino, Italy, June 2009.
Mutual Contextualization in Tripartite Graphs of Folksonomies
Doctoral Consortium in ISWC+ASWC 2007, Busan, Korea, November 2007.
Formalizing Typicality of Objects and Context-sensitivity in Ontologies
AAMAS 2006, Hakodate, Japan, May 2006.