Dynamic spectrum auction is an effective solution to manage spectrum across many small networks. Yet without proper economic design, spectrum auctions can be easily manipulated by bidders, suffering huge efficiency loss. Selfish bidders can manipulate their bids, individually or in groups, to game the system and obtain outcomes that favor their own interests and hurt others. Prior solutions hav...

The analysis of collusion in infinitely repeated Cournot oligopoly games has generally assumed that demand is linear, but this note uses constant−elasticity demand functions to investigate how the elasticity of demand affects the sustainability of collusion. Citation: Collie, David, (2004) "Collusion and the elasticity of demand." Economics Bulletin, Vol. 12, No. 3 pp. 1−6 Submitted: January 22...

Abstract Firms sometimes collude by agreeing on increases in list prices. Yet, the efficacy of such price collusion is subject to discussion as colluding firms might, principle, deviate secretly from elevated prices granting their customers discounts. This article reviews cases USA and Europe, it presents a theory harm suggesting that combination anchoring, orientation reference points, loss av...

Several privacy measures have been proposed in the privacypreserving data mining literature. However, privacy measures either assume centralized data source or that no insider is going to try to infer some information. This paper presents distributed privacy measures that take into account collusion attacks and point level breaches for distributed data clustering. An analysis of representative ...

In this paper, we discuss collusion-secure traceability codes for digital fingerprinting which is a technique for copyright protection of digital contents. We first state a generalization of conventional collusion attacks where illicit users of a digital content collude to create an illegal digital content. Then we propose a collusion-secure traceability code which can detect at least one collu...