1. 1 Adaptive Data Access Interface for STEP Model Repositories- support AEC product lifecycle management Frank Wang Donghoon Yang Chuck Eastman

2. 2 AEC (Architecture, Engineering and Construction) PLM integration in AEC industry Projects are for single products that may exist for centuries Supports one-of-a-kind projects – mass customization Developed by teams that come together for the single project Must operate in varied environments

3. 3 Problems Integration impediments across multiple domains Diverse Std. Organizations, practices, usages, schemas Redundant knowledge and concept representations Unfamiliar taxonomy across disciplines Expensive implementation Desire module-based PLM managerial applications General contractor Architect Client subcontractor IFC

4. 4 Scope Modeling context independent Utilizing implementation for PLM integral applications Increase knowledge reusability Multiple standards/models integration

5. 5 Adaptive Representation Modules Combination usage of adaptable presentation modules Geometry (3D) + TemporalGeometry (2D) + Functional Geometry + Functional Geometry + Functional+ Behavior + Temporal

6. 6 Framework and Architecture Framework and architecture Three layers architecture  Existing STEP repositories  Ontology-based semantic model  PLM Managerial applications Ontology-based semantic language Adaptable data access interface

7. 7 Semantic Language Goal Capture modeling concepts and structures Embed semantic and ontology Provide a product data specific modeling language with richer semantic for rigorous data representation Ontology languages from previous work TOVE (TOronto Virtual Enterprise, University of Toronto) Enterprise Ontology OIL (Ontology Interchange Language) KIF (Knowledge Interchange Format) PIF (Process Interchange Format) KACTUS (modeling Knowledge About Complex Technical systems for multiple USe)

8. 8 Criteria for the language reinventing Fundamental criteria Correct purposes Support richer semantic constructs Support complex engineering Required new language constructs Distinctive language (entity & relation) constructs Support referencing external languages Support additional identity and unity

9. 9 Basic constructs of the language Relation Conceptual Object (Entity) Representation Environment setting (unit, dimension)

10. 10 Adaptive Engineering Data Interface Adaptive module-based data access interface, allowing application to be self-tailoring for different PLM integration tasks Modularized presentations: geometry, temporal relations, topological functional relations and general properties Simple implementation Great knowledge reusability

11. 11 Interface Structure example

12. 12 Summary Current Achievement Acknowledgment