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...

Content on non-profit user-generated content (UGC) platforms, such as Wikipedia, is generally created and maintained as open-collaboration projects by UGC communities who are also users of these platforms. Furthermore, the financial sustainability of these platforms depends on funding from...