To develop and validate an ultra-short measure to assess the Big Five in social network designs, the unipolar items of the Ten-Item Personality Inventory were adapted to create a bipolar single-item scale (TIPI-r), including a new Openness item. Reliability was examined in terms of the internal consistency and test–retest stability of self-ratings and peer-rating composites (trait reputations)....

We propose a unifying family of quadratic cost functions to be used in Peer-toPeer ratings. We show that our approach is general since it captures many of the existing algorithms in the fields of visual layout, collaborative filtering and Peer-to-Peer rating, among them Koren spectral layout algorithm, Katz method, Spatial ranking, Personalized PageRank and Information Centrality. Besides of th...

Online Peer-to-Peer lending platforms claim to be beneficial for both borrowers and lenders by eliminating expensive intermediaries and reducing transaction costs. However, are the often inexperienced lenders who operate in a pseudonymous online environment with potentially significant information asymmetries really able to obtain an attractive return on their investment? This paper discusses t...

The rise of peer-to-peer marketplaces has led to many previously unrated commercial transactions being rated. Of course, online rating systems can lead, on occasion, to reviews that are unfair or unrepresentative of the true quality provided. On the one hand, receiving an unfairly low rating once, might induce participants to exert more effort and receive a better rating the next time. On the o...

Developing students teaming skills has become common place in engineering education as a pedagogical tool to facilitate learning of technical content as well as to prepare students for professional practice. Engineering faculty typically determine the degree to which students have had an effective team experience by indirect methods such as homework or project grades along with self report team...

Grant proposals submitted for funding are usually selected by a peer-review rating process. Some proposals may result in discordant peer-review ratings and therefore require discussion by the selection committee members. The issue is which peer-review ratings are considered as discordant. We propose a simple method to identify such proposals. Our approach is based on the intraclass correlation ...

Reputation mechanisms help peer-to-peer (P2P) networks to detect and avoid unreliable or uncooperative peers. Recently, it has been discussed that routing protocols can be improved by conditioning routing decisions to the past behavior of forwarding peers. However, churn — the continuous process of node arrival and departure — may severely hinder the applicability of rating mechanisms. In parti...