Upload
hugo-mcbride
View
216
Download
3
Embed Size (px)
Citation preview
MITSUBISHI 1 CADUI'96 - 7 June 1996 - FUNDP Namur
A Case-Based Design Suppor MethodA Case-Based Design Suppor MethodIncorporated WithIncorporated With
Designer’s Intention Recognition Designer’s Intention Recognition
Takayuki Yamaoka and Shogo Nishida
Mitsubishi Electirc CorporationAmagasaki Hyogo (JAPAN)
MITSUBISHI 2 CADUI'96 - 7 June 1996 - FUNDP Namur
IntroductionIntroduction
• Intentional design• Case-based design support method• Case-based intention recognition method• System architecture• Prototype system YAADYAAD• Conclusion
MITSUBISHI 3 CADUI'96 - 7 June 1996 - FUNDP Namur
Intention in DesignIntention 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.
MITSUBISHI 4 CADUI'96 - 7 June 1996 - FUNDP Namur
Conventional approachesConventional approaches
• CAD system– to support lower level operations.
• Expert systems and simulators– to automate computations and analyses.
• Multi-media interfaces– for inputs and outpus.
MITSUBISHI 5 CADUI'96 - 7 June 1996 - FUNDP Namur
Our approachOur 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
MITSUBISHI 6 CADUI'96 - 7 June 1996 - FUNDP Namur
Intentional design supportIntentional 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.
MITSUBISHI 7 CADUI'96 - 7 June 1996 - FUNDP Namur
Case-based design support methodCase-based design support method
NoYes
Problem
Candidates
Intention
No
States changed
Intentionstructure
Result
Candidates
Yes
Intentionstructure
Designer System
5. Operation on objects
Satisfied?
8. Modification forintention structure
3. Input intention
Has intention?
1. Iniput designrequirements
2. Case retrievalfor requirements
4. Retrieval forintention structure
6. Intentionpresumption
7. Case modification
9. Case storage
MITSUBISHI 8 CADUI'96 - 7 June 1996 - FUNDP Namur
Characteristics of the methodCharacteristics 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
MITSUBISHI 9 CADUI'96 - 7 June 1996 - FUNDP Namur
Intention recognitionIntention 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
MITSUBISHI 10 CADUI'96 - 7 June 1996 - FUNDP Namur
Representation of intention structureRepresentation of intention structure
PART
GIS
cylindrical
line
GIS-1 Line-1 GIS-2rightleft
symmetry
beautiful Symmetry-1
Beautiful-1
physical node
object node
vocabulary
PRED
SIZE
PRED ARGS
ARGS ARGS
PRED
PRED
PART
SUBJ SUBJOBJ OBJ
PART
SIZE
SIZE
SHAPE
SHAPElarge
SHAPElong Power line
mental node
Left-1 Right-1
MITSUBISHI 11 CADUI'96 - 7 June 1996 - FUNDP Namur
Case-based intention recognitionCase-based intention recognition
1. Get input statesfrom designer
2. Retrieval
set of states
A. Presumedstructure
B. Prior buffer
C. Case basesource cases
3. Synthesis
partialintentionstructure
input
4. Modification
intentionstructure
result
Use
d in
tent
ion
stru
ctur
e
go the next phase
MITSUBISHI 12 CADUI'96 - 7 June 1996 - FUNDP Namur
Synthesis and modificationSynthesis and modification
• Incremental synthesis of partial structures– to produce new structures– to make up case shortage
• Interactive modification of intention– to adjust individual
variation
Sparse Symmetry
Borad-1 Path-1 Terminal-1 Line-1 GIS-1 GIS-2
wide wide left right
Beautiful
Case-Base
MITSUBISHI 13 CADUI'96 - 7 June 1996 - FUNDP Namur
SimilaritySimilarity
IF similar
T,S: nodesL: link nameD: similarity between nodesd: distance between vocabulariesw: weight on link
S1
L1L2
S2
S0
L1 L2
T1 T2
T0
V1 V2
V0
Vocabulary database
d2 d1
D1=d1+d2
D = w1*D1 + w2*D2
MITSUBISHI 14 CADUI'96 - 7 June 1996 - FUNDP Namur
System architectureSystem architecture
Case-BaseSynthesis
Buffer
Retrieval
Edit
Distance
Interpretation
Scoping
Menu Network Editor
Statements
Vocabularies
Objects
InputInterpretation
User Interface
Memory
Inference Kernel
Similarity
OperationDisplayOperationProblem
Data/Knowledge
Input/Output
Process
Work Space
MITSUBISHI 15 CADUI'96 - 7 June 1996 - FUNDP Namur
YAADYAAD: a prototype: 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
MITSUBISHI 16 CADUI'96 - 7 June 1996 - FUNDP Namur
YAADYAAD: example screen: example screen
MITSUBISHI 17 CADUI'96 - 7 June 1996 - FUNDP Namur
YAADYAAD: example (2): example (2)
MITSUBISHI 18 CADUI'96 - 7 June 1996 - FUNDP Namur
YAADYAAD: example (3): example (3)
MITSUBISHI 19 CADUI'96 - 7 June 1996 - FUNDP Namur
YAADYAAD: example (4): example (4)
MITSUBISHI 20 CADUI'96 - 7 June 1996 - FUNDP Namur
YAADYAAD: Features and shortcomings: 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
MITSUBISHI 21 CADUI'96 - 7 June 1996 - FUNDP Namur
Future worksFuture works
• Vocabulary setting• Integration with conventional design support• Quick case retrieval
MITSUBISHI 22 CADUI'96 - 7 June 1996 - FUNDP Namur
Concluding remarksConcluding 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
MITSUBISHI 23 CADUI'96 - 7 June 1996 - FUNDP Namur
Thank you for your attention!