Use of Expert Systems within Distributed Systems

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Use of Expert Systems within Distributed Systems

• Elizabeth Rasnick
• Old Dominion University
• CS775
• Spring 2008

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What are Expert Systems?

• Structured on concepts established by experts

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What are Expert Systems?

• Structured on concepts established by experts
• a.k.a. knowledge-based or rule-based

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What are Expert Systems?

• Structured on concepts established by experts
• a.k.a. knowledge-based or rule-based
• Consist of rules for reasoning through
  situations and deciding what actions to take

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What are Expert Systems?

• Structured on concepts established by experts
• a.k.a. knowledge-based or rule-based
• Consist of rules for reasoning through
  situations and deciding what actions to take
• In simplest terms, decision trees

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What can Expert Systems in Distributed Systems do
for us?

• Aid in subsystem planning and designing

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What can Expert Systems in Distributed Systems do
for us?

• Aid in subsystem planning and designing
• Make selection of elements more precise

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What can Expert Systems in Distributed Systems do
for us?

• Aid in subsystem planning and designing
• Make selection of elements more precise
• Identify and diagnose issues

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What can Expert Systems in Distributed Systems do
for us?

• Aid in subsystem planning and designing
• Make selection of elements more precise
• Identify and diagnose issues
• Interpret incoming data

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What can Expert Systems in Distributed Systems do
for us?

• Aid in subsystem planning and designing
• Make selection of elements more precise
• Identify and diagnose issues
• Interpret incoming data
• Predict potential issues or opportunities

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What can Expert Systems in Distributed Systems do
for us?

• Aid in subsystem planning and designing
• Make selection of elements more precise
• Identify and diagnose issues
• Interpret incoming data
• Predict potential issues or opportunities
• Perform simulations to thoroughly explore
  potential scenarios

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How Expert Systems are used in Distributed
Systems?

• As part of a CORBA implementation

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How Expert Systems are used in Distributed
Systems?

• Via WWW through Web Services

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How Expert Systems are used in Distributed
Systems?

• Via WWW through Web Services

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How Expert Systems are used in Distributed
Systems?

• Within a large scale heterogeneous system

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What applications use Distributed Expert Systems?

• People movement in airport terminals
• Simulates predicts anomalies

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What applications use Distributed Expert Systems?

• People movement in airport terminals
• Simulates predicts anomalies
• Agriculture
• Diagnosis of livestock disorders
• Irrigation system design
• Prediction of most suitable crop variety

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What applications use Distributed Expert Systems?

• People movement in airport terminals
• Simulates predicts anomalies
• Agriculture
• Diagnosis of livestock disorders
• Irrigation system design
• Prediction of most suitable crop variety
• Software Development Lifecycle
• Interpretation of project requirements
• Selection of best implementation options

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What applications use Distributed Expert Systems?

• Analytical Chemistry
• Highly flexible control systems that adapt
  themselves as the environment changes

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What applications use Distributed Expert Systems?

• Analytical Chemistry
• Highly flexible control systems that adapt
  themselves as the environment changes
• Engineering
• Collaborative group project work platform

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What applications use Distributed Expert Systems?

• Analytical Chemistry
• Highly flexible control systems that adapt
  themselves as the environment changes
• Engineering
• Collaborative group project work platform
• Launch Operations
• Extensive simulation via the web reduces costs

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What applications use Distributed Expert Systems?

• Analytical Chemistry
• Highly flexible control systems that adapt
  themselves as the environment changes
• Engineering
• Collaborative group project work platform
• Launch Operations
• Extensive simulation via the web reduces costs
• Ground Space Operations
• Control of satellite tracking systems

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What are the benefits of Distributed Expert
Systems?

• Consistency of actions

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What are the benefits of Distributed Expert
Systems?

• Consistency of actions
• Increased efficiency speed of actions

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What are the benefits of Distributed Expert
Systems?

• Consistency of actions
• Increased efficiency speed of actions
• High flexibility adaptability

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What are the benefits of Distributed Expert
Systems?

• Consistency of actions
• Increased efficiency speed of actions
• High flexibility adaptability
• Reduction of testing simulation costs

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What are the drawbacks of Distributed Expert
Systems?

• Loss of control
• Managers fear the idea of not having hands-on
  control

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What are the drawbacks of Distributed Expert
Systems?

• Loss of control
• Managers fear the idea of not having hands-on
  control
• Potential loss of expertise

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What are the drawbacks of Distributed Expert
Systems?

• Loss of control
• Managers fear the idea of not having hands-on
  control
• Potential loss of expertise
• Over-reliance on software

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What are the drawbacks of Distributed Expert
Systems?

• Loss of control
• Managers fear the idea of not having hands-on
  control
• Potential loss of expertise
• Over-reliance on software
• Engineers have difficulty understanding and
  monitoring the system

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• Computer History Expert SysTem
• Students submit natural language questions
• Multimedia clips are returned
• Four layer architecture
• Presentation (GUI)
• Communication (internet)
• Inference (black box)
• Knowledge (expertise store)
• http//www.linckels.lu/chest/

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Conclusion

• Incorporated into many Distributed Systems
  designs
• Improve system consistency efficiency
• Highly flexible adaptive
• Requires engineers to have a strong understanding
  of the system
• Useful in various disciplines
• Overall Worth consideration

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Sources

• Bardina, Jorge E. and Thirumalainambi , Rajkumar.
  Distributed Web-Based Expert System For Launch
  Operations. In Proceedings of the 2005 Winter
  Simulation Conference. www.wintersim.org/prog05.ht
  mLuis
• H. Basson, M. Bouneffa, L. Deruelle, G.
  Goncalves, N. Melab, and J. Nicolas. A Change
  Impact Analysis Approach For CORBA-Based
  Federated Database. In Proceedings of the 11th
  International Conference on Database and Expert
  Systems Applications. www-lil.univ-littoral.fr/de
  ruelle/PAPIERS/DEXA2000paper.ps
• Buckley, Brian and Wheatcraft, Louis.
  Distributed Expert Systems for. Ground and Space
  Applications. www.interfacecontrol.com/papers/dis
  trib.pdf
• Linckels, Serge and Meinel, Christoph. CHEST
  Official Website. www.linckels.lu/chest/

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