Grid Organizational Memory: A Versatile Solution for Ontology Management in the Grid.
ABSTRACT Recent developments in the field of Grid computing reveal the strong need of managing metadata on much higher level than it used to be done previously. Standard solutions like MDS provide relatively efficient means of managing Grid resources on a low level basis, usually available for Grid experts and simple search tools. However in order to manage resources among multiple Virtual Organizations composed of highly heterogeneous entities, joining and leaving the Grid in a dynamic manner, a more flexible way of describing and managing their resources is required. In this paper, a solution to this problem based on ontologies and distributed knowledge base is presented. The knowledge base distributed architecture is discussed with the flexibility and fault-tolerance outlined. The performance evaluation for typical use cases shows, that ontology separation and various configurations of GOM make it useful for managing knowledge in multiple domains.
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ABSTRACT: For several years, all major communicational and informational aspects of organizations are being virtualized. This trend can be expected to evolve even further, provided sufficient technology is available, which can foster this process. Several research efforts have dealt in the past with the problem of creating and supporting management in Virtual Organizations, i.e., introducing the possibility of virtualizing the entire organization concept, by means of special IT infrastructure. One of the main problems of this approach is allowing the organizations to discover and collaborate with other organizations. In this paper we analyze the possibility of using P2P technology to data knowledge distribution in distributed systems. We present a survey and comparison of various structured and unstructured P2P networks. We describe our P2P approach to knowledge based emergent Virtual Organizations inception and management.Proceedings of the 9th international conference on Parallel Processing and Applied Mathematics - Volume Part II; 09/2011
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ABSTRACT: In recent years, distributed environments such as grids and clouds have evolved quickly and become widely used for both business and scientific purposes. Grid environments are used for solving increasingly complex problems in order to provide more accurate and up-to-date results. However, evolution of modern grid middlewares does not follow current trends in their utilization, which often leads to problems concerning provisioning of resources in grid environments. Many users of grid systems stumble on performance issues during execution of their applications. A special kind of grid applications which are dependent on effective provisioning of storage resources constitute data-intensive grid applications, i.e. applications which operate on large datasets.This paper addresses the issue of effective provisioning of storage resources for data-intensive grid applications based on the best-effort strategy. In order to cater applications demand on storage resources in heterogeneous and dynamic grid environments, we propose an approach relying on a combination of a cluster file system technology, a dedicated storage resources monitoring service and a management layer. The paper describes the way that this combination of technologies solves the issue of effective storage resources provisioning in grid environments by presentation of the FiVO/QStorMan toolkit, which constitutes an implementation of the proposed approach. In order to prove that the proposed approach actually reduces data-intensive applications execution time, extensive evaluation of the framework is presented for motivating scenarios which overlap most kinds of data-intensive applications.Future Generation Computer Systems 03/2013; 29(3):713–727. · 2.64 Impact Factor
Conference Paper: Translation of Common Information Model to Web Ontology Language.[Show abstract] [Hide abstract]
ABSTRACT: This paper presents a brief overview of the work on translation of Common Information Model (CIM) to Web Ontology Language (OWL) standard. The main motivation for the work is given, along with discussion of major issues faced during this work. The paper contains also comparison of existing approaches to conversion of CIM to OWL and presents the CIM2OWL tool that performs the conversion of CIM schema and allows convertion of CIM instances - representing for instance configurations of particular systems - to OWL individuals.Computational Science - ICCS 2007, 7th International Conference Beijing, China, May 27-30, 2007, Proceedings, Part I; 01/2007