1. MITSUBISHI 1 CADUI'96 - 7 June 1996 - FUNDP Namur A Case-Based Design Suppor Method Incorporated With Designer’s Intention Recognition Takayuki Yamaoka and Shogo Nishida Mitsubishi Electirc Corporation Amagasaki Hyogo (JAPAN)

2. MITSUBISHI 2 CADUI'96 - 7 June 1996 - FUNDP Namur Introduction Intentional design Case-based design support method Case-based intention recognition method System architecture YAADPrototype system YAAD Conclusion

3. MITSUBISHI 3 CADUI'96 - 7 June 1996 - FUNDP Namur Intention in Design Creative design –as a decision making problem. –generating a prefered result. Design intention: to be satisfied. Means: to realize the intention. Intention structure: intention and its means. Grasping and sharing intention –cooerative support in design process.

4. MITSUBISHI 4 CADUI'96 - 7 June 1996 - FUNDP Namur Conventional approaches CAD system –to support lower level operations. Expert systems and simulators –to automate computations and analyses. Multi-media interfaces –for inputs and outpus.

5. MITSUBISHI 5 CADUI'96 - 7 June 1996 - FUNDP Namur Our approach Incorporating design intention –for creative and conceptual design –to amplify ideas –through interactions Using CBR(Case-Based Reasoning) –to avoid to describe a priori rules –to produce various information –from the point of view of the current computer ability

6. MITSUBISHI 6 CADUI'96 - 7 June 1996 - FUNDP Namur Intentional design support Situations: –clear intention, but no concrete means. –concrete means, but not clear intention. –want any ideas. Support forms: –to present concrete means to saitsfy the intention. –to presume intention from the means. –to present various good examples.

7. MITSUBISHI 7 CADUI'96 - 7 June 1996 - FUNDP Namur Case-based design support method No Yes Problem Candidates Intention No States changed Intention structure Result Candidates Yes Intention structure Designer System 5. Operation on objects Satisfied? 8. Modification for intention structure 3. Input intention Has intention? 1. Iniput design requirements 2. Case retrieval for requirements 4. Retrieval for intention structure 6. Intention presumption 7. Case modification 9. Case storage

8. MITSUBISHI 8 CADUI'96 - 7 June 1996 - FUNDP Namur Characteristics of the method Flexible design according to situations –through free operation, interaction, modification Mutual understanding of intention –by intention recognition and modification Synthesizing solution –by referring to various cases

9. MITSUBISHI 9 CADUI'96 - 7 June 1996 - FUNDP Namur Intention recognition Problems of conventional methods (e.g plan recognition) –to prepare complete knowledge sources(plans) –not flexible output, but concrete result by rules Using CBR –to avoid fixed and detailed knowledge sources –to provide flexible and various information –to extend knowledge sources step by step

10. MITSUBISHI 10 CADUI'96 - 7 June 1996 - FUNDP Namur Representation of intention structure PART GIS cylindrical line GIS-1 Line-1 GIS-2 rightleft symmetry beautiful Symmetry-1 Beautiful-1 physical node object node vocabulary PRED SIZE PRED ARGS PRED PART SUBJ OBJ PART SIZE SHAPE large SHAPE long Power line mental node Left-1 Right-1

11. MITSUBISHI 11 CADUI'96 - 7 June 1996 - FUNDP Namur Case-based intention recognition 1. Get input states from designer 2. Retrieval set of states A. Presumed structure B. Prior bufferC. Case base source cases 3. Synthesis partial intention structure input 4. Modification intention structure result Used intention structure go the next phase

12. MITSUBISHI 12 CADUI'96 - 7 June 1996 - FUNDP Namur Synthesis and modification Incremental synthesis of partial structures –to produce new structures –to make up case shortage Interactive modification of intention –to adjust individual variation SparseSymmetry Borad-1Path-1Terminal-1Line-1GIS-1GIS-2 wide leftright Beautiful Case-Base

13. MITSUBISHI 13 CADUI'96 - 7 June 1996 - FUNDP Namur Similarity IF similar T,S: nodes L: link name D: similarity between nodes d: distance between vocabularies w: weight on link S1S1 L1L1 L2L2 S2S2 S0S0 L1L1 L2L2 T1T1 T2T2 T0T0 V1V1 V2V2 V0V0 Vocabulary database d2d2 d1d1 D 1= d 1+ d 2 D = w1* D 1 + w2* D 2

14. MITSUBISHI 14 CADUI'96 - 7 June 1996 - FUNDP Namur System architecture Case-Base Synthesis Buffer Retrieval Edit Distance Interpretation Scoping Menu Network Editor Statements Vocabularies Objects Input Interpretation User Interface Memory Inference Kernel Similarity Operation DisplayOperationProblem Data/Knowledge Input/Output Process Work Space

15. MITSUBISHI 15 CADUI'96 - 7 June 1996 - FUNDP Namur YAAD: a prototype For electric facilites layout design –C + Motif on UNIX machine (HP-9000) –12 objects, 6 states, and 132 vocabularies –(initially) 4 cases, including 54 partial structs. Data reference functions –between case node and working object –from presumed intention structure to case node

16. MITSUBISHI 16 CADUI'96 - 7 June 1996 - FUNDP Namur YAAD: example screen

17. MITSUBISHI 17 CADUI'96 - 7 June 1996 - FUNDP Namur YAAD: example (2)

18. MITSUBISHI 18 CADUI'96 - 7 June 1996 - FUNDP Namur YAAD: example (3)

19. MITSUBISHI 19 CADUI'96 - 7 June 1996 - FUNDP Namur YAAD: example (4)

20. MITSUBISHI 20 CADUI'96 - 7 June 1996 - FUNDP Namur YAAD: Features and shortcomings Interactive reference: –possibility to provide various ideas Flexible and robust Knowledge extension and handing down Explanation by real examples Manual scoping Manual modification

21. MITSUBISHI 21 CADUI'96 - 7 June 1996 - FUNDP Namur Future works Vocabulary setting Integration with conventional design support Quick case retrieval

22. MITSUBISHI 22 CADUI'96 - 7 June 1996 - FUNDP Namur Concluding remarks Case-based intentional design support method –support creative desing through interaction –enhaunce human ideas Case-based intention recognition –Avoidance of fixed rules –Extension of knowledge sources YAADYAAD: a prototype for layout design

23. MITSUBISHI 23 CADUI'96 - 7 June 1996 - FUNDP Namur Thank you for your attention!