We examine the Information Quality aspects of Wikipedia. By a study of the discussion pages and other process-oriented pages within the Wikipedia project, it is possible to determine the information quality dimensions that participants in the editing process care about, how they talk about them, what tradeoffs they make between these dimensions and how the quality assessment and improvement pro...

Online discussions can be a major aspect of learning and teaching when a course is offered entirely online. Using online discussions can lead to new considerations of the tutor’s role in relation to the students. This article outlines some of the research findings regarding online discussions, and considers these in relation to an online Masters course using a problem based approach. The course...

In response to calls for implementing active learning in college-level science, technology, engineering, and mathematics courses, classrooms across the country are being transformed from instructor centered to student centered. In these active-learning classrooms, the dynamics among students becomes increasingly important for understanding student experiences. In this study, we focus on the rol...

These three discussions, including one jointly written with Judith Rousseau and one written jointly with Gilles Celeux, Florence Forbes and Mike Titterington, are associated with three papers related to Bayesian model choice. This area of Bayesian statistics is still the object of intense and antagonistic debates and our vision of the field is reflected by these three texts.

This paper investigates the effect of various types of linguistic features (lexical, syntactic and semantic) for training classifiers to detect threats of violence in a corpus of YouTube comments. Our results show that combinations of lexical features outperform the use of more complex syntactic and semantic features for this task.