A Semantic-Aware Ontology-Based Trust Model for Pervasive Computing Environments

Abstract

Abstract. Traditionally, to handle security for stand-alone computers and small networks, user authentication and access control mechanisms would be almost enough. However, considering distributed networks such as the Internet and pervasive environments, these kinds of approaches are confronted with flexibility challenges and scalability problems. This is mainly because open environments lack a central control, and users in them are not predetermined. In such ubiquitous computing environments, issues concerning security and trust become crucial. Adding trust to the existing security infrastructures would enhance the security of these environments. Although many trust models are proposed to deal with trust issues in pervasive environments, none of them considers the semantic relations exist among pervasive elements and especially among trust categories. Employing Semantic Web concepts, we propose a computational trust model based on the ontology structure, considering the mentioned semantic relations. In this model, each entity can calculate its trust in other entities and use the calculated trust values to make decisions about granting or rejecting collaborations. Using ontology structure can make the model extendible to encompass other pervasive features such as context awareness in a simple way.

Ontology Development for Public Policy Implementation: Challenges, Opportunities, and Applications

“…Ontology development can also facilitate policy analysis and evaluation by providing a structured representation of policy concepts and relationships. This can help to identify gaps, inconsistencies, and redundancies in policy documents, and to assess the potential impacts of policy decisions [8,9].…”

“…Coherence refers to the degree to which the ontology is aligned with the goals and objectives of policy implementation. Coherent ontologies may help to ensure that policy decisions are based on a shared understanding of policy concepts and relationships [9]. J Math Techniques Comput Math, 2023 Overall, the theoretical framework of ontology development provides a structured approach to facilitate knowledge sharing and collaboration among stakeholders in public policy implementation.…”

Attribute - Semantic Based Access Control Policy Model for IoT

“…It is very important to take decision on entity interrelations. In this paper, we present model for accurate decision making, considering semantic relations among entities in domains of access control either subject or object [23].…”

“…T (e1, ei, c1) is trust value of e1 on e2 under c1 (1) The trust value is taken as a attribute value and used in attribute based access control method. The trust manager updates the trust value with time [26].…”

Ontological Engineering Approach towards Trust Oriented Security Framework for Adhoc Networks

“…The network infrastructure is dynamically changing, and the links are wireless with less capacity and more prone to errors. This is mainly because of that open environments lack a central control and users in them are not predetermined [5] [6] Adding trust to the existing security infrastructures would enhance the security of these environments.…”