An emerging gamified business model in the online learning industry has recently caught widespread attention where users are entitled to a full refund of course fee after finishing certain tasks consecutively for the required number of days (i.e., the time window). Some examples of finishing...

The emergence of Google's Speed Update incentivizes firms to improve website performance to rank higher on Google search. We study two modes of web traffic competition: Website Speed (response-based) and Website Capacity (capacity-based). The response-based decision process starts with choosing...

Opinion spammers exploit consumer trust by posting false or deceptive reviews that may have a negative impact on both consumers and businesses. These dishonest posts are difficult to detect because of complex interactions between several user characteristics such as review velocity, volume, and...