Two-sided markets are gaining increasing importance. Examples include accommodation
and car sharing, resale, shared mobility, crowd work, and many more. As these businesses …

Platform workers can typically not take their ratings from one platform to another. This
creates lock-in as building up reputation anew can come at prohibitively high cost. A system …

Die digitale Transformation überführt Geschäfts-und Verwaltungsabläufe in den digitalen
Raum. Zu deren sicherer und rechtskonformer Durchführung ist es oft notwendig, sich von …

Fake reviews have become an increasingly relevant issue in electronic commerce.
Regulators and platform operators have begun to take action against fake reviews through …

With the ever-growing popularity of online shopping, platform environments providing
access to products by multiple sellers increasingly attract users. To reduce information …

Online user representation (UR) is a cornerstone of platform-mediated interactions within the
sharing economy. While the general usefulness of UR artifacts for facilitating online and …

Online reputation represents an important driver for platform-mediated transactions.
Reputation portability captures the notion of allowing users to transfer their reputation–often …

Today, people are often members of several online communities, leaving their footprints
scattered across cyberspace in the form of local reputations. Collecting these reputation data …