Project for the Summer School on Ubiquitous Computing, Oulu, Finland, 10-15 June 2019 Loukas Konstantinou • Cyprus University of Technology Vlad Manea • University of of Copenhagen Thaha Mohammed • Aalto University Aku Visuri • University of Oulu UBISS 2019 • Oulu, Finland Problem Lecture Boredom 23.000 universities Webometrics 50% time boring for students Götz 60% of students bored Guardian 2019 end year course evaluations Context Lecture Atmosphere Many signals: lecturer speaks, slides unfold, students roll eyes, ... Context sensing: possible with available, unobtrusive technologies Insufficient research to quantify classroom audience engagement Method Study Setup 16 lecture videos from YouTube ⨉ 5 audio clips per video ⨉ 4 workshop students ⨉ 1 rating per clip = 320 data points Results Model Accuracies Supervised Machine Learning, Classification Support Vector Machines 65% Dreadful - Cheerful 72% Timid - Assertive 75% Vague - Clear 55% Monotonous - Dynamic Lessons Learned Models gave good results for the time and resources we had Android sound mobile sensing was particularly challenging Opportunity for holistic sensing of classrooms at scale