A growing body of evidence has shown that incorporating behavioral economics principles into the design of financial incentive programs helps improve their cost-effectiveness, promote individuals' short-term engagement, and increase compliance in …
Authority users often play important roles in a social sys- Tem. They are expected to write good reviews at product review sites; provide high quality answers in question answering systems; and share interesting content in social net- works. In the …
In this paper, we explore the problem of identifying substitute relationship between food pairs from real-world food consumption data as the first step towards the healthier food recommendation. Our method is inspired by the distributional hypothesis …
To support people trying to lose weight and stay healthy, more and more fitness apps have sprung up including the ability to track both calories intake and expenditure. Users of such apps are part of a wider “quantified self“ movement and many opt-in …
Geotagged social media is becoming highly popular as social media access is now made very easy through a wide range of mobile apps which automatically detect and augment social media posts with geo-locations. In this paper, we analyze two kinds of …
Massive amount of digital traces left behind by life in the modern world have brought about the emergence of a computational social science. This presentation introduces research at Living Analytics Research Centre (LARC) where problems in consumer …
With the widespread adoption of the Web, many compa- nies and organizations have established websites that pro- vide information and support online transactions (e.g., buy- ing products or viewing content). Unfortunately, users have limited attention …
Tracking user browsing data and measuring the effectiveness of website design and web services are important to businesses that want to attract the consumers today who spend much more time online than before. Instead of using randomized controlled …
Gaming expertise is usually accumulated through playing or watching many game instances, and identifying critical moments in these game instances called turning points. Turning point rules (shorten as TPRs) are game patterns that almost always lead …
Unlike standard web search, people search microblog messages to look for temporally relevant information. Due to the recency nature of microblogs and a massive amount of data generated by users of popular services such as Twitter, it is challenging …