A CaseBased Design Suppor Method Incorporated With Designers Intention Recognition

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A CaseBased Design Suppor Method Incorporated With Designers Intention Recognition

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Title: A CaseBased Design Suppor Method Incorporated With Designers Intention Recognition

1
A Case-Based Design Suppor MethodIncorporated
With Designers Intention Recognition
Takayuki Yamaoka and Shogo Nishida Mitsubishi
Electirc Corporation Amagasaki Hyogo (JAPAN)
2
Introduction

Intentional design
Case-based design support method
Case-based intention recognition method
System architecture
Prototype system YAAD
Conclusion

3
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
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
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
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
Case-based design support method
Designer
System
1. Iniput design requirements
2. Case retrieval for requirements
Problem
Has intention?
Candidates
No
Yes
4. Retrieval for intention structure
3. Input intention
Intention
6. Intention presumption
5. Operation on objects
States changed
Intention structure
Intention structure
Satisfied?
No
7. Case modification
Candidates
Yes
8. Modification for intention structure
9. Case storage
Result
8
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
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
Representation of intention structure
Beautiful-1
mental node
PRED
physical node
ARGS
beautiful
Symmetry-1
object node
PRED
ARGS
ARGS
vocabulary
symmetry
Right-1
Left-1
PRED
PRED
SUBJ
OBJ
SUBJ
OBJ
right
left
GIS-2
GIS-1
Line-1
PART
SIZE
PART
SHAPE
Power line
long
SIZE
line
GIS
SHAPE
large
cylindrical
PART
SIZE
SHAPE
11
Case-based intention recognition
1. Get input states from designer
12
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

13
Similarity
T,S nodes L link name D similarity
between nodes d distance between
vocabularies w weight on link
14
System architecture
Operation
Display
Operation
Problem
User Interface
Network Editor
Work Space
Menu
Input Interpretation
Buffer
Edit
Scoping
Objects
Synthesis
Case-Base
Interpretation
Statements
Retrieval
Memory
Data/Knowledge
Distance
Similarity
Vocabularies
Input/Output
Process
Inference Kernel
15
YAAD a prototype