P. Bouvier, K. Sehaba, and E. Lavoué, A trace-based approach to identifying users??? engagement and qualifying their engaged-behaviours in interactive systems: application to a social game, User Modeling and User-Adapted Interaction, vol.22, issue.1???2, pp.413-451, 2014.
DOI : 10.1007/s11257-014-9150-2

URL : https://hal.archives-ouvertes.fr/hal-01130953

K. Börner, Visual insights : a practical guide to making sense of data, 2014.

D. Clow, Data wranglers, Proceedins of the Fourth International Conference on Learning Analytics And Knowledge, LAK '14, pp.49-53, 2014.
DOI : 10.1145/2567574.2567603

A. Fortenbacher, L. Beuster, M. Elkina, L. Kappe, A. Merceron et al., LeMo: A learning analytics application focussing on user path analysis and interactive visualization, 2013 IEEE 7th International Conference on Intelligent Data Acquisition and Advanced Computing Systems (IDAACS), pp.748-753, 2013.
DOI : 10.1109/IDAACS.2013.6663025

G. W. Furnas, A fisheye follow-up, Proceedings of the SIGCHI conference on Human Factors in computing systems , CHI '06, pp.999-1008, 2006.
DOI : 10.1145/1124772.1124921

C. Ginzburg, Signes, traces, pistes, Le D??bat, vol.6, issue.6, p.3, 1980.
DOI : 10.3917/deba.006.0003

S. Govaerts, K. Verbert, E. Duval, and A. Pardo, The student activity meter for awareness and self-reflection, Proceedings of the 2012 ACM annual conference extended abstracts on Human Factors in Computing Systems Extended Abstracts, CHI EA '12, pp.869-884, 2012.
DOI : 10.1145/2212776.2212860

J. Laflaquì-ere, Conception de systèmè a base de traces numériques pour les environnements informatiques documentaires, 2009.

E. Lavoué, G. Molinari, Y. Prié, and S. Khezami, Reflection-in-action markers for reflection-on-action in Computer-Supported Collaborative Learning settings, Computers & Education, vol.88, pp.129-142, 2015.
DOI : 10.1016/j.compedu.2015.05.001

D. Leony, A. Pardo, L. De-la-fuente-valentín, D. S. De-castro, and C. D. Kloos, GLASS, Proceedings of the 2nd International Conference on Learning Analytics and Knowledge, LAK '12, pp.162-163, 2012.
DOI : 10.1145/2330601.2330642

T. D. Loboda, J. Guerra, R. Hosseini, and P. Brusilovsky, Mastery grids, Proceedings of the 2014 conference on Innovation & technology in computer science education, ITiCSE '14, pp.357-357, 2014.
DOI : 10.1145/2591708.2609840

J. L. Santos, S. Govaerts, K. Verbert, and E. Duval, Goal-oriented visualizations of activity tracking, Proceedings of the 2nd International Conference on Learning Analytics and Knowledge, LAK '12, pp.143-152, 2012.
DOI : 10.1145/2330601.2330639

B. Shneiderman, The eyes have it : a task by data type taxonomy for information visualizations, IEEE Symposium on Visual Languages, 1996. Proceedings, pp.336-343, 1996.

K. Verbert, E. Duval, J. Klerkx, S. Govaerts, and J. L. Santos, Learning Analytics Dashboard Applications, American Behavioral Scientist, vol.57, issue.10, pp.1500-1509, 2013.
DOI : 10.1177/0002764213479363

M. Wolpers, J. Najjar, K. Verbert, and E. Duval, Tracking Actual Usage : the Attention Metadata Approach, Journal of Educational Technology & Society, vol.10, issue.3, pp.106-121, 2007.