This paper introduces a set of principles for governing the design and operation of online reputation systems. We also introduce the design, architecture, and implementation of a flexible, general-purpose framework, called Pythia, for building reputation systems. We give a sample application of our framework to illustrate its use.

Reputation-management, as proposed for dynamic and open systems aims to provide mechanism for analysing the behaviour of agents, and to distribute this information so that the impact of the actions of those acting against the interests of a community can be limited. We study the assumptions that underpin this decisionmaking role for reputation-management and highlight its limitations with regar...

Roughly one in two Americans has a chronic disease, and an estimated 1.7 million die each year from chronic illness.1 Most will have a chronic illness for a prolonged time before they die. Until 2005, lung cancer was the most common terminal diagnosis in hospices. Now, however, debility not otherwise specified (NOS) has surpassed lung cancer as the most common diagnosis (Table 1). Debility NOS ...

Nowadays more and more Internet applications install reputation systems to collect opinions users have about some reputation objects. The opinions are usually formalized in the form of ratings the reputation system can use to build overall reputation profiles of the reputation objects. Reputation objects might be other users, products, web content and anything else that can be rated. Users may ...

Optimal randomized and deterministic algorithms have been given for k-k routing on two-dimensional n n meshes. The deterministic algorithm is based on “column-sort” and exploits only part of the features of the mesh. For small n and moderate k, the lower-order terms of this algorithm make it considerably more expensive than the randomized algorithm. In this paper, we present a novel determinist...