Anti-gravity Underground?
PURBA 2012 (Pervasive Workshop)|slides|blog|bib

TweetLDA: Supervised Topic Classification and Link Prediction in Twitter
ACM WebSci 2012|slides|blog|bib|code

Loosing "Friends" on Facebook
ACM WebSci 2012 |slides|blog|bib

Visualizing Media Bias through Twitter
SocMedNews 2012 (AAAI ICWSM Workshop)|slides|blog|bib

Facebook and Privacy: The Balancing Act of Personality, Gender, and Relationship Currency
AAAI ICWSM 2012|acceptance:20%||slides|blog|bib

The Social World of Twitter: Topics, Geography, and Emotions
AAAI ICWSM 2012|acceptance:20%||slides|blog|bib

Talk of the City: Our Tweets, Our Community Happiness
AAAI ICWSM 2012 (short paper)|slides|blog|bib

The Hidden Image of the City: Sensing Community Well-Being from Urban Mobility
Pervasive 2012 |slides|blog|bib|new scientist

Middleware for Social Computing: A Roadmap
ACM/IFIP/USENIX Middleware 2012 (FOME track)|slides|blog|bib

Auralist: Introducing Serendipity into Music Recommendation
ACM WSDM 2012|(plenary paper)acceptance:8%(30/362)|slides|blog|bib

Tracking "Gross Community Happiness" from Tweets
ACM CSCW 2012|slides|blog|bib

The Personality of Popular Facebook Users
ACM CSCW 2012|slides|blog|bib

In the Mood for Being Influential on Twitter
IEEE SocialCom 2011|slides|blog|bib

Our Twitter Profiles, Our Selves: Predicting Personality with Twitter
IEEE SocialCom 2011|slides|blog|bib

Mobile Phones and Outdoor Advertising: Measurable Advertising
IEEE Pervasive Computing Magazine 2011

SpotME If You Can: Randomized Responses for Location Obfuscation on Mobile Phones
IEEE ICDCS 2011|acceptance:15%|slides|blog|bib

Recommending Social Events from Mobile Phone Location Data
IEEE ICDM 2010|(short+full paper)acceptance:19%(155/797)|jproject|slides|blog|bib

Using Mobile Phones to Nurture Social Networks
IEEE Pervasive Computing Magazine 2010|project|slides|

StakeSource: Harnessing the Power of Crowdsourcing and Social Networks in Stakeholder Analysis
ACM/IEEE ICSE 2010|research demo track|project

StakeNet: Using Social Networks to Analyse the Stakeholders of Large-Scale Software Projects
ACM/IEEE ICSE 2010|acceptance:13%|project

Sybil Attacks Against Mobile Users: Friends and Foes to the Rescue
IEEE INFOCOM 2010|(short+full paper)acceptance:24%(382/1575)|slides|

FriendSensing: Recommending Friends Using Mobile Phones
ACM RecSys 2009|project|slides|

Trust Models for Mobile Content-Sharing Applications
UCL PhD Thesis 2009|Nominated for BCS Best British PhD dissertation in CS

MobiRate: Making Mobile Raters Stick to their Word
ACM Ubicomp 2008|acceptance:15%|blog|slides|bib

Lightweight Distributed Trust Propagation
IEEE ICDM 2007|acceptance:7%|blog|slides|bib