2026-04-17T06:57:48Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/128282025-07-17T01:03:45Zcom_2072_1033col_2072_452950

Dynamic reputation-based trust computation in private networks Nin Guerrero, Jordi Carminati, Barbara Ferrari, Elena Torra i Reventós, Vicenç Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors Universitat Politècnica de Catalunya. DMAG - Grup d'Aplicacions Multimèdia Distribuïdes Àrees temàtiques de la UPC::Informàtica::Seguretat informàtica Trust Social networks Computer networks -- Security measures Ordinadors, Xarxes d' -- Mesures de seguretat Xarxes socials Technical Report IIIA-TR-2009-02 The use of collaborative networks services in general, and web based social networks (WBSN) services in particular, is today increasing and, therefore, the protection of the resources shared by network participants is becoming a crucial need. In a collaborative network, one of the main parameters on which access control relies is represented by trust and reputation, since access to a resource may or may not be granted on the basis of the trust/reputation of the requesting node. Therefore, the calculation of the trust of the nodes becomes a very important issue, mainly in business to business (BtoB) social networks, where trustworthy nodes can increase their benefits taking profit of their good reputation in the network. In order to address this point, in this paper we propose a mechanism to dynamically compute nodes trust, based on their past behavior. The key characteristic of our proposal is that trust is computed in a private way. This is obtained by anonymizing the local log files storing information about nodes actions. Preprint 2009 External research report https://hdl.handle.net/2117/12828 eng http://personals.ac.upc.edu/nin/papers/trust.tr.pdf http://creativecommons.org/licenses/by-nc-nd/3.0/es/ Open Access Attribution-NonCommercial-NoDerivs 3.0 Spain 24 p. application/pdf