The temporal structure of multimedia content is an important aspect of the description of time-based media and needed in many applications. Expressive content description languages, such as MPEG-7, provide tools for describing the temporal decomposition of content into segments. Although the...

This paper develops a duopoly model of user-generated content (UGC) platforms that compete for consumers and content producers in two-sided markets with network externalities. Each platform can choose the level of investment into a content quality assurance (CQA) system and the level of...