TY - CONF TI - The Four Seasons: Identification of seasonal effects in LMS usage data AF - Proceedings of the Workshop on Data Analysis and Interpretation for Learning Environments (DAILE) PP - Villard‐de‐Lans SP - 1 EP - 9 PY - 2013-02-01 AU - Andergassen, Monika AU - Neumann, Gustaf AU - Mödritscher, Felix ER -