The notion of “engagement,” which plays an important role in various domains of
psychology, is gaining increased currency as a concept that is critical to the success of …

Increasingly, users are interacting with information retrieval (IR) systems with the goal of
addressing complex, ill-defined search tasks. As a result, the interest in deconstructing and …

User engagement has become a much-cited construct in human-computer interaction (HCI)
design and evaluation research and practice. Constructed as a positive and desirable …

Chatbots represent a promising approach to provide instructional content and facilitate
active learning processes. However, there is a lack of knowledge as how to design chatbot …

Although analytics have become a widespread practice, we still have minimal knowledge
about how dashboards influence decision-makers and through what mechanisms they …

Abstract MOOCs (Massive Open Online Courses) offer tens of thousands of courses and
attract hundreds of millions of online learners. After years of development, these platforms …

Modern information-seeking systems are becoming more interactive, mainly through asking
Clarifying Questions (CQs) to refine users' information needs. System-generated CQs may …

This monograph reviews research on the design and evaluation of search user interfaces
that has been published within the past 10 years. Our primary goal is to integrate state-of-the …

The coronavirus (COVID-19) pandemic and recent economic recession have been
impacting many people's mental health. The experience of social distancing created new …

User engagement, a key factor in the success of social media platforms, has long been
based on permanent content. A recent paradigm shift in platform design has led large social …