Knowledge Management in Geodise

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Knowledge Managementin Geodise
Geodise Knowledge Management Team Liming Chen,
Barry Tao, Colin Puleston, Paul Smart University
of Southampton University of Manchester
Epistemics Ltd.

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Overview

• Geodise needs knowledge management
• Knowledge acquisition and modelling
• Grid-oriented knowledge management
• Knowledge applications in Geodise
• Creating semantic content
• Workflow management
• Knowledge-based advice
• EDSO component management
• Summary and future work

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Geodise MeetsKnowledge Management (KM)- put KM
in context -
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GEODISE
Geodise will provide grid-based seamless access
to an intelligent knowledge repository, a
state-of-the-art collection of optimisation and
search tools, industrial strength analysis codes,
and distributed computing data resources
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The Problems the Solutions

• Geodise Flexible and secure sharing of
  resources on the Grid to carry out Engineering
  Design Search and Optimisation (EDSO)
• Component level - EDSO tasks such as problem
  setup, mesh generation, code analysis, DOE, RSM,
  Optimisation, etc.
• Process level EDSO workflow for problem-solving
  
• Grid level - resource accessibility, sharing,
  reuse, interoperability, etc.
• The problems
• From infosmog to shared, semantically enriched,
  well-structured knowledge repositories
• From standalone KBSs to knowledge services on the
  Grid
• The solutions
• Ontology conceptual backbone for resource
  sharing and creating semantic content
• Knowledge management knowledge delivery, reuse
  and decision-making support

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The Approach to Knowledge Management
Knowledge Acquisition
Validation
Knowledge Modelling
Knowledge Publishing
Application Domain
Application Systems
Knowledge Use Re-use
Knowledge Support Via KBSs
Knowledge Maintenance
Application Scenarios User Requirements
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Knowledge Acquisition and Modelling- what we
need how to get them -
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Knowledge Acquisition (KA)

• Knowledge sources
• Domain experts, software manuals textbooks.
• KA techniques
• Interview, protocol analysis, concept sorting
  etc.
• Tools used
• PC-PACK integrated knowledge engineering toolkit
• Knowledge acquired
• EDSO domain knowledge, EDSO processes and problem
  definition

Concept hierarchy in Laddering Tool
Concept mark-up in Protocol Editor
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Knowledge Modelling

• Techniques
• CommonKADS knowledge engineering
  methodologies.
• Knowledge models
• Organization, agent task templates, domain
  schema inference rules.
• Tools used
• PC-PACK integrated knowledge engineering toolkit
• Deliverables
• Knowledge web in HTML, XML and UML, Conceptual
  task model, EDSO process flowchart

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Ontology Development (1)

• Tools
• Protégé OilEd Editor
• Representation
• DAMLOIL CLIPS
• Deliverables
• EDSO domain ontology
• EDSO task ontology
• Mesh generation tool (Gambit software) ontology
• User-profile ontology

Protégé Editor
OilEd Editor
DAMLOIL
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Ontology Development (2)

• Ontology Views
• DL ontologies (DAML/OWL)
• Simplified views
• Tailored to specific domains

• Ontology Views
• Underlying complexity hidden
• Ontology editing by
• Knowledge engineers
• Domain experts

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Grid-oriented Knowledge Management- From
local, standalone KBSs to distributed,
shared knowledge services -
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The KM Architecture for the Grid

• Features
• Service-oriented approach
• Ontologies as a conceptual backbone
• Integrated KM framework
• Layered modular structure
• Distributed knowledge reuse sharing
• Flexible extensible
• Robust easy maintenance

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Knowledge Portal

• Functions
• Make knowledge available accessible
• Provide tools for knowledge reuse and exchange
• Security infrastructure
• Knowledge resources management
• Techniques
• Microsoft .Net framework

video demo
live demo
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Ontology Services

• Facilitating ontology sharing reuse
• Ontology service APIs
• Domain independence
• DAMLOIL/OWL standards
• Soap-based web services -WSDL
• Java, Apache Tomcat Axis technologies

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Knowledge Advice Service

• Application Side
• Ontologies
• Knowledge bases
• Problems being solved
• Knowledge Service Side
• Inference layer the reasoning process of a KBS
  in domain-independent terms
• Communication layer XML-based messaging
• Application layer provide common terms for
  knowledge bases, inference layer and
  communication schema
• Standalone knowledge advice system implemented
• Not wrapped as web/Grid service yet

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Exploiting Knowledge in Geodise- Make
differences for EDSO
through the use of knowledge -
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Knowledge Application 1 Create Semantic Content

• Goals
• Machine understandable information
• Facilitate sharing reuse

• Technique tool
• OntMat-annotizer
• Geodise Ontologies
• Example
• OPTIONS log-files annotation

video demo
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Knowledge Application 2Ontology-assisted
Workflow Management

• Features
• Function selection
• Function instantiation
• Database schema
• Semantic instances
• Semantic workflow
• Technologies
• EDSO ontologies ontology services
• Java JAX-RPC, DOM/SAX

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Knowledge Application 3Knowledge-based Design
Advisor

• Features
• Context-sensitive advice
• Advice at multi-levels of granularity (process,
  task )
• KBSs as knowledge services
• Technologies
• Knowledge engineering
• EDSO ontologies
• Rule-based reasoning techniques

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Knowledge Application Prototype
Knowledge-based Ontology-assisted Workflow
Construction Environment
video demo
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Knowledge Application 4 EDSO Component
Management for the Grid

• Aim to make EDSO components (which could be a
  problem definition, an algorithm, a solution or a
  task) available on the Grid, easy of use and
  reusable to other users.
• Problems involved
• Describe or model components in a way
• Create instances and repositories
• Discovery and retrieval mechanisms
• Query and inference mechanisms
• Semantics on the use and re-use of the components

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Knowledge Application 4 Component Management
(1) XML-based Template-oriented Approach

• Use XML XML Schema
• Java/JAXFront technology
• Access via knowledge APIs
• Potential ontology support

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Example Use Arcadia Problem Setup
Knowledge API called in MatLab
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Knowledge Application 4 Component Management
(2) Semantic Service-oriented Approach

• Semantic description for components using
  DAMLOIL /OWL ontologies
• Automated form generation for creating instances
• RDF as the representation formalism
• Semantic knowledge repository using RDF triple
  store
• Semantics-based query inference technologies

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Summary

• EDSO knowledge
• EDSO domain, process, problem definition,
  (partial) optimisation algorithms
• EDSO ontologies
• Domain ontology, task ontology, Gambit user
  profile ontology
• Grid-oriented knowledge management architecture
• Ontology service infrastructure
• Knowledge publishing mechanism
• Service-oriented KBS paradigm
• Application prototypes
• Knowledge portal workflow construction
  environment knowledge-based advice system,
  XML-based templates-oriented description for EDSO
  components ontology-assisted Gambit Journal file
  editor
• A semantic description framework for EDSO
  components

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Future Work

• Component management
• Knowledge repositories for EDSO functions,
  problems in CFD workflows
• Storage, query inference mechanisms
• Service-oriented KBSs reuse infrastructure
• Reasoning services - problem-solving methods
  (PSM)
• Brokering services - a paradigm for manipulating
  reasoning services on the Web
• Knowledge-based decision-making support systems
• Knowledge intensive points (need to be clarified
  from domain users)
• Further KAs
• Semantics-based, case-based reasoning mechanisms
• Geodise knowledge toolkit in Matlab
• Where when it fits in, what knowledge is
  needed, in which form? We need application
  scenarios user requirements.

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Thank you! Q/A
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Knowledge Application 2Ontology-assisted
Workflow Management

• Features
• Ontology-assisted function selection
• Ontology-assisted function instantiation
• Database schema
• Semantic instances workflow

• Technologies
• EDSO ontologies ontology services
• Java JAX-RPC, DOM/SAX

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Knowledge-based Systems for EDSO

• Process-level design advisor
• Service-oriented paradigm
• Ontology as common terms

• Knowledge APIs
• XML-based messaging

• Task-level design tools
• Ontology-assisted Gambit journal file editor
• Critique on commands workflow

Knowledge-based advisor
Design advice
Gambit journal file editor
Add a task