grammer genration in design

1. Generation
Grammars
in
Design

2. http: www.shapegrammar.org

3. Languages
● natural
● music, art, design
● formal – mathematics, logic
● programming
● types
● components
● semantics – meaning / function
● syntax – structure/form
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4. Syntax
● primitive elements
● letters, phonemes
● alphabet
● vocabulary
● words, phrases, sentences
● grammar
● legal composition of vocabulary
● rules, operators
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5. Semantics
● derived from syntax
● from vocabulary within a context
● dictionary lookup not sufficient
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6. Grammars
● rules or operators
● define legal operations on syntax
● how vocabulary can be composed
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7. Grammars for
generation
● generate legal structures
● may be meaningless
the house ate the purple aardvark
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8. Grammars
equivalence
● rewrite rules
X → Y
● production systems
if conditions then consequents
if X then X and Y ≡ X → X, Y
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9. Rewrite rules example
M I
M I U M I I
M I U I U M I I U M I I I I
M I U I U I U I U M I I U I I U M I I I I U M U I
R1 R2
R2 R1 R2
R3
R2 R2 R1
R1: * I --> * I U
R2: M * --> M * *
R3: * I I I # --> * U #
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10. Linguistic paradigm
of design
● syntax
● vocabulary: components, assemblies
● grammar: composition rules
● semantics
● function: purpose, what object does
design can be discussed as
operations within a language
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11. ● problem
● grammars
● from initial state
● apply grammar rules successively
● produce legal designs
● Universe of Discourse (UOD)
Generation
what configuration of design elements will
constitute a design solution with a
satisfactory performance
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12. ● Stiny 1980
● introduction to shape grammars
● language of forms
● spatial forms
● vocabulary – maximal lines
● four components
● finite set of shapes
● finite set of symbols
● finite set of shape grammar rules
● initial shape
Shape Grammars
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13. Shape Grammars
Example
Rule R2
Rule R1
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14. Shape Grammars
Example
R2
Rule R1
Rule R2
R1 R1
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15. Shape Grammars
Example
R1
Rule R1
Initial shape
R1 R1
R1 R1
R1
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16. Polygon
Constructive Rule
Rule R1
single general rule – negative vectors
+
+ +
R1 R1
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17. ● shape grammars
● tables
● blocks
● Palladian villas
● Frank Lloyd Wright Houses
● set grammars
● EAVE
● Glenn Murcutt
Examples of
Design Grammars
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18. shape
grammars
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19. shape grammars
19

20. Examples of
Design Grammars
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21. Examples of
Design Grammars
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22. Examples of
Design Grammars
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23. Examples of
Design Grammars
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24. ● specific vocabulary
● elements, materials
● specific grammar
● composition
Style
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25. ● state of a cell and its neighbours
● 1-D, 2-D, 3-D
● simple rules – cell survives or not
● Game of Life
Cellular Automata
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26. Cellular Automata
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1-D 2-D
Von Neumman
r = 1
2-D
Moore
r = 1

27. Cellular Automata
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Wolfram, S. (2002). A New Kind of Science, Wolfram Media Inc., Champaign, IL.

28. 28
Cellular Automata
Wolfram, S. (2002). A New Kind of Science, Wolfram Media Inc., Champaign, IL.

29. 29
Cellular Automata
Kicinger, R. F. (2004). Emergent Engineering Design: Design Creativity and Optimality
Inspired by Nature, PhD Dissertation, George Mason University, Fairfax, VA

30. ● meaningful design solutions
● grammars syntactic only
● methods
● exhaustive search
● satisficing - optimization
● evolutionary approach
● Generate and Test
● simple approach
Control of
Generation
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31. ● Dawkins
● biomorphs
● evolutionary programming
● shape grammars + evaluation
Evolution
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32. creative design ?
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