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Semantic Web-Based Information Systems: State-of-the-Art ...

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Kaykova, Khr yenko, Kovtun, Naumenko, Terz yan, & Zharko<br />

Figure 1. Layers <strong>of</strong> <strong>the</strong> GUN architecture<br />

Resource + Adapter +<br />

Agent + Platform =<br />

GUN Resource<br />

Resource<br />

platform<br />

Resource<br />

agents l ayer<br />

Resource<br />

adapters layer<br />

each resource and are able to monitor semantically reached data coming from <strong>the</strong><br />

adapter about states <strong>of</strong> <strong>the</strong> resource, decide if more deep diagnostics <strong>of</strong> <strong>the</strong> state is<br />

needed, discover o<strong>the</strong>r agents in <strong>the</strong> environment that represent decision makers, and<br />

exchange information (agent-to-agent communication with semantically enriched<br />

content language) in order to get diagnoses and decide if a maintenance is needed.<br />

It is assumed that decision-making <strong>Web</strong> services will be implemented, based on<br />

various machine-learning algorithms, and will be able to learn, based on samples<br />

<strong>of</strong> data taken from various service consumers and labeled by experts. Use <strong>of</strong> agent<br />

technologies within <strong>the</strong> GUN framework allows mobility <strong>of</strong> service components<br />

between various platforms, decentralized service discovery, FIPA communication<br />

protocols utilization, and MAS-like integration/composition <strong>of</strong> services (Ermolayev,<br />

Keberle, Plaksin, Kononenko, & Terziyan, 2004).<br />

Main.Stages.Toward.Smart.Resources<br />

Resources<br />

layer<br />

Resources <strong>of</strong> a<br />

new generator<br />

(Semant c Adapter Ins de)<br />

We have divided <strong>the</strong> implementation <strong>of</strong> <strong>the</strong> GUN concept for <strong>the</strong> maintenance domain<br />

into <strong>the</strong> following three stages: adaptation, proactivity, and networking. Each stage<br />

assumes design <strong>of</strong> a more enhanced version <strong>of</strong> <strong>the</strong> maintenance environment.<br />

The adaptation stage defines <strong>Semantic</strong> <strong>Web</strong>-based framework for unification <strong>of</strong><br />

maintenance data and interoperability in <strong>the</strong> maintenance system by adding explicit<br />

Copyright © 2007, Idea Group Inc. Copying or distributing in print or electronic forms without written permission <strong>of</strong><br />

Idea Group Inc. is prohibited.

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