| May 2020 | The Unexpected Downside of Paying or Sending Messages to People to Make Them Walk: Comparing Tangible Rewards and Motivational Messages to Improve Physical Activity SwissCHI, online, Zoom presentation Video of the talk |
| January 2020 | Supporting Job-seekers’ efficacy through self-reflection tools Applied Machine Learning Days, EPFL, Switzerland Video of the talk |
| November 2019 | The Unexpected Downside of Paying or Sending Messages to People to Make Them Walk: Comparing Tangible Rewards and Motivational Messages to Improve Physical Activity Mixed Reality Lab, University of Nottingham, UK Details of the talk |
| April 2019 | Teaching programming to large classes with Jupyter Lunch&Learn seminars, EPFL, Switzerland Video of the talk |
| October 2016 | Design of Online Deliberative Systems: Villains and heros Journée d’etude Internationale, CEVIPOF, SciencePo, Paris, France Site CEVIPOF |
| June 2011 | A research agenda in service front-ends ACM SIGCHI Symposium on Engineering Interactive Computing Systems (EICS). Pisa, Italy |
| May 2010 | Exploiting social networks as delivery networks Sonic Lab seminars, Northwestern University, USA |
| June 2008 | Calculating cross-recurrence gaze in dual eye-tracking Brown bag seminars, Nottingham University, UK |
| May 2006 | The future of web search Universitat Pompeu Fabra, Barcelona, Spain Organized by Yahoo! Research Video of the talk |