Abstract: . . .  lar website. Such information has earlier been suggested as an implicit trust certifier [20] for websites. We term these factors as website evaluation statements or website evalua- tions. In what follows, we detail our approach of enhancing the P3P trust model. 5.1. Gathering and sharing website evaluations The collection of data can be in either of the follow- ing forms: (i) user level heuristics as decentralized sources - can be captured . . .
. . .  In Journal of Computer-Mediated Communication, JCMC 5 (3) March 2000 , 2001. [21] M. Richardson, R. Agrawal, and P. Domingos. Trust man- agement for the semantic web . In Proceedings of the Second International Semantic Web Conference , 2003. [22] M. Schunter and C. Powers. The enterprise privacy autho- rization language (epal 1.1). [23] A. Uszok, J. Bradshaw, and R. J. et al. Kaos policy and do- main services: Toward a description-logic approach . . .
. . .  Toward a description-logic approach to pol- icy representation, deconfliction, and enforcement. In IEEE 4th International Workshop on Policies for Distributed Sys- tems and Networks(Policy 2003) , 2003. [24] R. Wenning. (w3c privacy activity lead) personal communi- cation: Xslt for p3p rdf, march 10, 2004. </html . . .
. . .  how expressive user preference languages can be effectively used in realizing the enhanced framework. As a follow on to this work, we are exploring the use of Reis delegation management capabilities for future web privacy protection directions, especially policy negotiation [4]. We will also address the disconnect between user preference languages and enterprise wide privacy enforcement mech- anisms like EPAL[22]. References [1] Extensible . . .
. . .  specification. The entire framework including sample files are avail- able for download at http://semdis.umbc.edu/ privacy . 8. Conclusion and Future Work In this paper we have presented enhancements to the P3P framework through the use of a more expressive user prefer- ence language and an improved trust model. We believe that these enhancements will be effective in making the web pri- vacy protection mechanisms more useable leading to their widespread . . .
. . .  its us- age for user privacy preference specification. We also com- pare it with APPEL and Xpref to how its advantages. For further details on Rei, we refer the reader to [16]. 4.1. Rei Policy Language Rei is a declarative policy language with an RDF/XML grounding (recent versions support OWL, OWL-Lite), which includes notions of logic like variables for describ- ing different kinds of conditions. It is modeled on deon- tic concepts of permissions, . . .
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