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Human-Centred Knowledge-Based Model Access Service for Engineers

CIB W78 Conference 2002 - Aarhus. Human-Centred Knowledge-Based Model Access Service for Engineers. Peter Katranuschkov & Alexander Gehre TU Dresden, Germany. Outline. Knowledge-Based M odel A ccess S ervice = MAS 1. Background 2. Objectives 3. Architecture 4. Services Basic

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Human-Centred Knowledge-Based Model Access Service for Engineers

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  1. CIB W78 Conference 2002 - Aarhus Human-Centred Knowledge-Based Model Access Service for Engineers Peter Katranuschkov &Alexander Gehre TU Dresden, Germany

  2. Outline Knowledge-Based Model Access Service = MAS 1. Background 2. Objectives 3. Architecture 4. Services • Basic • Advanced (Reasoning agent, Ontology Browser) • Example (Browser Walkthrough) 5. Conclusions CIB W78 Conference 2002 - Aarhus

  3. Background • MAS is being developed in the frames of the EU project ISTforCE (IST-1999-11508, Feb. 2000 – September 2002) • Main ISTforCE deliverable: Open collaboration environment where end users and providers of eng. information, services and tools can meet • Achievements in ISTforCE strongly supported by MAS: • Human-centred instead of project-centred environment • Multi-project support • Flexible product data exchange and sharing • Infrastructure for on-line e-Business, including legal and financial aspects of the collaboration process • MAS is a self-contained system but its functionality is fully unfolded only through the integration with the other infrastructure services of the ISTforCE platform CIB W78 Conference 2002 - Aarhus

  4. MAS within the ISTforCE platform Remote (Rental) Engineering Services ISTforCE RES ISTforCE RES ISTforCE Core Information Services CAD / CAFM Analysis Tools ... Project Infrastructure Services Multi-Project Integration Services Generic Infrastructure Services PDMS EDMS ... PPS MAS ECS TOS ... people projects services companies CIB W78 Conference 2002 - Aarhus

  5. MAS within the ISTforCE platform Remote (Rental) Engineering Services ISTforCE RES ISTforCE RES ISTforCE Core Information Services CAD / CAFM Analysis Tools ... Project Infrastructure Services Multi-Project Integration Services Generic Infrastructure Services PDMS EDMS ... PPS MAS ECS TOS ... people projects services companies CIB W78 Conference 2002 - Aarhus

  6. MAS within the ISTforCE platform Remote (Rental) Engineering Services ISTforCE RES ISTforCE RES ISTforCE Core Information Services CAD / CAFM Analysis Tools ... Project Infrastructure Services Multi-Project Integration Services Generic Infrastructure Services PDMS EDMS ... PPS MAS ECS TOS ... people projects services companies CIB W78 Conference 2002 - Aarhus

  7. MAS Objectives • Central access point for product model services based on IFC and STEP/EXPRESS • User-friendly management of product models • Transparent access to different Product Data Servers • Set of functions for product data processing on model / object / attribute level • Advanced knowledge based functionality(sophisticated queries, request interpretation, solvers) • Intelligent product model browsing • Enabling model access to a wide range of clients using different communication paradigms CIB W78 Conference 2002 - Aarhus

  8. MAS Architecture Product Data Servers Core Information Services Product Data Servers Product Data Servers Sun EJB Framework Information Logic (EJB Cont.) Presentation Logic (Web Container) Access Control Interface (XML/HTTP) Product Model & Ontology Provider Product Data Controller Client Adapters (RMI-IIOP,CORBA) Reasoning Agent MAS Clients ( Local Appl., RES, Web-Browser ) Explanation Component Front - End (Servlets, JSP, HTML) CIB W78 Conference 2002 - Aarhus

  9. Basic Services • SPF-based product model access • upload and download of product models using a standard Web Browser or a MAS Client Adapter • generalized access to different project-specific product data servers supported by information provided by the Core Information Server • Integrated Persistent Model Cache to efficiently support consistency and version management w.r.t. the plugged-in product data servers • Product data access on object / attribute level • generic access methods for simple filtering / inspection / querying / retrieval / modification of objects and their attributes using appropriate RPC mechanisms (Client Adapters) • These basic services are essential for the advanced MAS functions and for the integration of client applications CIB W78 Conference 2002 - Aarhus

  10. Advanced Services: Reasoning Agent request Request Interpreter response Reasoning Agent Solver Solver Solver Solver III MAS integrated Product Model Server Solution Provider I II CIB W78 Conference 2002 - Aarhus

  11. Advanced Services: Engineering Ontology • Translation of the strictly formalised IFC data structures to an engineering vocabulary • Definitions completely based on the XML standard(uses XML Schema as baseline) • Open extensible specification • Real time mapping between the EO definitions and the underlying IFC 2x model • Easy to learn and use client-side Ontology Browser CIB W78 Conference 2002 - Aarhus

  12. Engineering Ontology Information Flow Ontology Repository EO Specification Schema (xsd) add/update validate specifications EO Extended Specification (xsd) EO Definition (xml) EO specifications Ontology Provider MAS - PDS Ontology Interpreter IFC uses the Ontology Repository to create an EO Representation Instance (xml) on the basis of IFC model data provides the IFC product model data navigate, access operations IFC to EOmappings EO Repr. Instance Web Container Engineer‘s Web Browser render ExplanationComponent uses EO Presentation Schema (xslt) and Java Server Pages (jsp) to createPresentation Documents (html) HTML document with browsing / navigationfunctionality CIB W78 Conference 2002 - Aarhus

  13. MAS Explanation Component: Walkthrough CIB W78 Conference 2002 - Aarhus

  14. MAS Explanation Component: Walkthrough CIB W78 Conference 2002 - Aarhus

  15. MAS Explanation Component: Walkthrough CIB W78 Conference 2002 - Aarhus

  16. MAS Explanation Component: Walkthrough CIB W78 Conference 2002 - Aarhus

  17. MAS Explanation Component: Walkthrough CIB W78 Conference 2002 - Aarhus

  18. MAS Explanation Component: Walkthrough CIB W78 Conference 2002 - Aarhus

  19. MAS Explanation Component: Walkthrough CIB W78 Conference 2002 - Aarhus

  20. MAS Explanation Component: Walkthrough CIB W78 Conference 2002 - Aarhus

  21. MAS Explanation Component: Walkthrough CIB W78 Conference 2002 - Aarhus

  22. MAS Explanation Component: Walkthrough Geometry view Still under development … CIB W78 Conference 2002 - Aarhus

  23. Summary: Achievements Revisited • Human-centred instead of project-centred environment • transparent access to product data services, intelligent ontology-based browsing capabilities, personal planning support • Multi-project support • access to multiple product servers for multiple projects • Flexible product data exchange and sharing • broad range of functions for full/partial model exchange and sharing, advanced add-on functionality based on agent technology, open architecture for further ext. • Infrastructure for on-line e-Business, including legal and financial aspects of the collaboration process • integrated authentication and access control features CIB W78 Conference 2002 - Aarhus

  24. We must either institute conventional forms of expression or else pretend that we have nothing to express.- George Santayana, Soliloquies in England Thank you for your attention

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