Cloud Service Reservation using PTN mechanism in Ontology enhanced Agent-based System

摘要

The relationship between the cloud provider and the cloud consumer must be described with a Service Level Agreement (SLA). To establish SLA for utilizing a cloud service, there are two issues which are the following: 1) Determining when to use the service (time slot); 2) Determining the price of the service. This paper presents an agent-based cloud service discovery approach that consults ontology to retrieve information about cloud services and implements Price and Timeslot Negotiation (PTN) Mechanism for Cloud Service Reservation. The important contributions of this work include: developing an agent-based search engine for cloud service discovery and effective adaptation of agent-based Price and Timeslot Negotiation mechanisms for cloud service negotiation. Cloud Service Reasoning Agent (CSRA) that enables the Cloud Service Discovery System (CSDA) is used to reason about the relations of cloud services, rate the search results and design and construction of cloud ontology. Cloud agents in PTNs are designed to concurrently make multiple proposals in a negotiation round that generate aggregated utility, differing only in terms of individual price and time-slot utilities.