Publications de Guillaume Zufferey

Leveraging mobile eye-trackers to capture joint visual attention in co-located collaborative learning groups

Guillaume Zufferey, Sébastien Cuendet, Pierre Dillenbourg, Bertrand Roland Schneider, Kshitij Sharma

This paper describes a promising methodology for studying co-located groups: mobile eye-trackers. We provide a comprehensive description of our data collection and analysis processes so that other researchers can take advantage of this cutting-edge technol ...

SPRINGER2018

Using Mobile Eye-Trackers to Unpack the Perceptual Benefits of a Tangible User Interface for Collaborative Learning

Guillaume Zufferey, Sébastien Cuendet, Pierre Dillenbourg, Bertrand Roland Schneider, Kshitij Sharma

In this study, we investigated the way users memorize, analyze, collaborate, and learn new concepts on a Tangible User Interface (TUI). Twenty-seven pairs of apprentices in logistics (N = 54) interacted with an interactive simulation of a warehouse. Their ...

Assoc Computing Machinery2016

Detecting Collaborative Dynamics Using Mobile Eye-Trackers

Guillaume Zufferey, Sébastien Cuendet, Pierre Dillenbourg, Bertrand Roland Schneider, Kshitij Sharma

: Prior work has successfully described how low and high-performing dyads of students differ in terms of their visual synchronization (e.g., Barron, 2000; Jermann, Mullins, Nuessli & Dillenbourg, 2011). But there is far less work analyzing the diversity of ...

2016

MOOC Learning in Spontaneous Study Groups: Does Synchronously Watching Videos Make a Difference?

Guillaume Zufferey, Pierre Dillenbourg, Nan Li, Himanshu Verma, Afroditi Skevi

Study groups are common approaches for students to study together at schools. However, little is known about how this approach is suited to MOOC based learning, where learners watch and discuss MOOC lecture videos in a collaborative manner. Watching MOOCs ...

P.A.U. Education2014

Watching MOOCs together: investigating co-located MOOC study groups

Guillaume Zufferey, Pierre Dillenbourg, Nan Li, Himanshu Verma, Afroditi Skevi

Research suggests that massive open online course (MOOC) students prefer to study in groups, and that social facilitation within the study groups may render the learning of difficult concepts a pleasing experience. We report on a longitudinal study that in ...

Routledge Journals, Taylor & Francis Ltd2014

Classroom orchestration : The third circle of usability

Guillaume Zufferey, Sébastien Cuendet, Pierre Dillenbourg, Patrick Jermann, Hamed Seiied Alavi, Frédéric Kaplan, Lenh Hung Son Do, Quentin Bonnard

We analyze classroom orchestration as a question of usability in which the classroom is the user. Our experiments revealed design features that reduce the global orchestration load. According to our studies in vocational schools, paper-based interfaces hav ...

International Society of the Learning Sciences2011

Reflection for Apprentices in Logistics Using Augmented Paper and Tangible User Interface

Guillaume Zufferey, Pierre Dillenbourg, Patrick Jermann

2011

Benefits of a Tangible Interface for Collaborative Learning and Interaction

Guillaume Zufferey, Pierre Dillenbourg, Patrick Jermann, Bertrand Roland Schneider

We investigated the role that tangibility plays in a problem-solving task by observing logistic apprentices using either a multitouch or a tangible interface. Results showed that tangibility helped them perform the task better and achieve a higher learning ...

2011

Classroom-experience evaluation: Evaluating pervasive technologies in a classroom setting

Guillaume Zufferey, Pierre Dillenbourg, Patrick Jermann

2011

The Complementarity of Tangible and Paper Interfaces in Tabletop Environments for Collaborative Learning

Guillaume Zufferey

The current trend in Human-Computer Interaction aims at bridging the gap between the digital and the real world, exploring novel ways to engage users with computational devices. Computers take new forms that are better integrated into our environment and c ...

EPFL2010

SensorTune: a Mobile Auditory Interface for DIY Wireless Sensor Networks

Jean-Pierre Hubaux, Jacques Panchard, Guillaume Zufferey, Julien Freudiger, Jeffrey Huang, Enrico Costanza

Wireless Sensor Networks (WSNs) allow the monitoring of activity or environmental conditions over a large area, from homes to industrial plants, from agriculture fields to forests and glaciers. They can support a variety of applications, from assisted livi ...

2010

Task Performance vs. Learning Outcomes: A Study of Tangible User Interface in Classroom Setting

Guillaume Zufferey, Sébastien Cuendet, Pierre Dillenbourg, Patrick Jermann

Tangible User Interfaces (TUIs) offer the potential to facilitate collaborative learning in new ways. This paper presents an empirical study that investigated the effects of a TUE in a classroom setting on task performance and learning outcomes. In the tan ...

Springer2010

An empirical evaluation of touch and tangible interfaces for tabletop displays

Guillaume Zufferey, Pierre Dillenbourg, Patrick Jermann, Aurélien Lucchi

Tabletop systems have become quite popular in recent years, during which there was considerable enthusiasm for the development of new interfaces. In this paper, we establish a comparison between touch and tangible interfaces. We set up an experiment involv ...

2010

TinkerSheets and Reﬂection: Design Augmented Papers to Facilitate Student’s Reﬂection

Guillaume Zufferey, Pierre Dillenbourg, Patrick Jermann

2010

Using Augmentations as Bridges from Concrete to Abstract Representations

Guillaume Zufferey, Pierre Dillenbourg, Patrick Jermann

We describe a pedagogical approach supporting the acquisition of abstraction skills by apprentices in logistics. Apprentices start with a concrete representation in the form of a small-scale model which aims at engaging them in learning activities. Multipl ...

British Computer Society2009

TinkerSheets: Using Paper Forms to Control and Visualize Tangible Simulations

Guillaume Zufferey, Pierre Dillenbourg, Patrick Jermann, Aurélien Lucchi

This paper describes TinkerSheets, a paper-based interface to tangible simulations. The proposed interface combines the advantages of form-based input and paper. Form-based input allows to set an arbitrary number of parameters. Using paper as a medium for ...

2009

A Tabletop Learning Environment for Logistics Assistants: Activating Teachers

Guillaume Zufferey, Pierre Dillenbourg, Patrick Jermann

We describe a tabletop environment used in vocational schools to teach theoretical concepts to apprentices in lo gistics through the use of a small-scale model of a ware house. It provides a Tangible User Interface in the form of wooden shelves, metallic p ...

ACTA Press2008

Hardware/Software Coevolution of Genome Programs and Cellular Processors

Pierre-André Mudry, Guillaume Zufferey

The application of evolutionary techniques to the design of custom processing elements bears a strong relation to the natural process that led to the co-evolution of cells and genomes in biological organisms. As such, it is an interesting avenue for an eff ...

2006

A Dynamically Constrained Genetic Algorithm For Hardware-software Partitioning

Pierre-André Mudry, Guillaume Zufferey

In this article, we describe the application of an enhanced genetic algorithm to the problem of hardware-software codesign. Starting from a source code written in a high-level language our algorithm determines, using a dynamically-weighted fitness function ...

Association for Computing Machinery2006

A hybrid genetic algorithm for constrained hardware- software partitioning

Pierre-André Mudry, Guillaume Zufferey

In this article, we propose a novel partitioning method for hardware-software codesign based on a genetic algorithm that has been enhanced for this specific task. Given a high- level program and an area constraint, our software considers different granular ...

2006