All posts filed under “research

CHI 2015 Work-in-progress (WIP) Accepted – Location Requirements in Local Search


We have just had a CHI WIP accepted for presented in Seoul, Korea in April 2015! WooHoo 🙂 This work-in-progress paper was conducted with Henriette Cramer in which we conducted a large-scale survey via Mechanical Turk to shed light on what factors of location are important when choosing a target place of interest in a local search scenario, namely restaurant search.

The survey was deployed in December 2013 and collected a range of demographic information as well as details regarding participants’ current and most recent locations. The core of the survey was a local restaurant search scenario in which participants were asked to provide freeform textual responses to the following question: Read More

CHI 2015 Paper Accepted! An In-Situ Study on Mobile App & Mobile Search Interactions


We recently discovered that all our hard word has paid off! This past summer, JP Carrascal (a PhD candidate from UPF, Barcelona) and I worked together on a study to understand more about if and how mobile search and mobile app usage interacts. And a full CHI paper reporting our findings has been accepted for publication at CHI 2015 in Korea!

The motivation behind this work is that smartphone users spend much of their time transitioning between mobile search engines and mobile apps (and vice versa) when trying to find information. The figure below helps highlight this fact. The figure shows the timeline of mobile device interactions for a 1 hour period of a single day for an actual participant in our study, showing sequences of mobile device interactions in the form of mobile app launches, home screen interactions and mobile searches. Read More

TOCHI Paper Accepted! A large-scale study of daily information needs captured in-situ

After 2 years of work and many revisions, our paper describing a large-scale study of daily information needs has been accepted to ACM Transactions on Computer-Human Interaction (TOCHI). And what’s even more exciting is that we will be presenting the work at CHI 2014 🙂… Read more

What’s up with Whatsapp? Best Paper Nominee @ MobileHCI 2013

Our paper entitled What’s up with whatsapp?: comparing mobile instant messaging behaviors with traditional SMS was nominated for a best paper award at this years MobileHCI conference in Munich 🙂 And we are delighted to have been nominated.

The paper describes an interview and survey study that explores how a popular mobile instant messaging app called WhatsApp has been adopted and appropriated, focusing on key motivators of use compared to more traditional SMS. The work was done in collaboration with my past colleague at Telefonica ResearchRodrigo de Oliveria. The full paper can be found here and below is the presentation we gave at the MobileHCI 2013 conference. As always feedback or questions are very welcome.