Towards an Internet of Agents model based on Linked Open Data approach
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The Internet of Agents (IoA) is a current approach to the Future Internet that has arisen as an alternative to mitigate the limitations of the Internet of Things (IoT) concerning autonomy, reasoning and social capabilities. The aim of this paper is to present a novel architectural model governed by semantic contracts, published as linked data which describe the main aspects regarding the IoA domain, such as context, social circles, services ecosystems, IoT resources, and real-time restrictions. This proposal introduces some mechanisms such as (i) Linked Open Agents (LOAs) as the main unit of process for coordinating and managing IoT-objects, (ii) Linked Agent Contracts (LACs) as contractual semantic descriptions of entities of IoA ecosystems, (iii) an ontology named IoA-OWL that covers the current main aspects related to the IoA, (iv) a Reference Architecture for the IoA approach driven by LOAs and LACs, and (v) a mechanism for agent-discovery based on semantic descriptors. Both the model and its mechanisms are integrated, in order to improve the semantic interoperability and intelligence in heterogeneous IoT networks controlled by Multi-Agent Systems. Finally, a case study is proposed for a scenario of Ambient Intelligence as a working example of the novel architectural model. In addition, a qualitative and quantitative evaluation is then performed to analyze the applicability, performance, functionality of our proposal. A better performance was obtained for the agent discovery process with our architecture in contrast to JADE Yellow Pages and the Java implementation of the Universal Description, Discovery, and Integration.
KeywordsLinked Open Data Internet of Agents Internet of Things Linked Open Agent Contract Ontology
Authentication, Authorization and Accounting
Agent Communication Language
Belief, Desire, Intention
Design by Contract
Dynamic Open Home-Automation
Devices Profile for Web Services
Foundation for Intelligent Physical Agents
Internet of Agents
Internet of Services
Internet of Things
Internationalized Resource Identifier
Java Agent Development Framework
Java implementation of the Universal Description, Discovery, and Integration
Linked Agent Contract
Linked Open Agent
Linked Open Data
Web Ontology Language
Representational State Transfer
Resource Description Framework
Simple Object Access Protocol
SPARQL Protocol and RDF Query Language
Uniform Resource Identifier
Universally Unique Identifier
Workflow for Agent Contract
Extensible Markup Language
This study was funded by the Ecuadorian Ministry of Higher Education, Science, Technology and Innovation (SENESCYT) through the Program of Ph.D. for university professors. In addition, the authors thank the Center for Research in Information and Communication Technologies of the University of Granada (CITIC-UGR). Finally, the authors would also like to thank the referee for a careful reading of the paper and some valuable suggestions.
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