## Formal design methods for CAD: proceedings of the IFIP TC5/WG5.2 Workshop on Formal Design Methods for CAD, Tallinn, Estonia, 16-19 June 194Formal design methods provide the basis for the non-graphical use of computer-aided design. This volume represents the cutting edge of international research in the area, where artificial intelligence and cognitive science paradigms are providing a renewed impetus for exploration and development. The sixteen chapters are grouped into five parts: formal representations in design; shape grammars in design; design grammars; formalised design processes; and exploration in design. The volume will provide a valuable source of information for all those connected with this field. |

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Page 335

Graphical model of state space

have distinguished the two concepts of search and

Graphical model of state space

**exploration**where Si is state space i and Ej is**exploration**j. 5. Towards a Model of**Exploration**in Computer- Aided Design Wehave distinguished the two concepts of search and

**exploration**. Search may be ...Page 337

Introduction The two presentations in this session introduced and used a

distinction between what is understood as search in design and what is

**EXPLORATION**IN DESIGN: DISCUSSION Research issues T. Smithers 1.Introduction The two presentations in this session introduced and used a

distinction between what is understood as search in design and what is

**exploration**in design.Page 342

Thus, what successful search results in is solutions to well defined problems,

whereas, what successful

solutions to them, having started with an ill-defined, possibly unsovlable, problem

.

Thus, what successful search results in is solutions to well defined problems,

whereas, what successful

**exploration**results in is well defined problems andsolutions to them, having started with an ill-defined, possibly unsovlable, problem

.

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### Contents

A tutorial introduction to grammatical programming | 73 |

Geometric design with boundary solid grammars | 85 |

vi | 89 |

Copyright | |

14 other sections not shown

### Common terms and phrases

abduction abstraction algorithm application Artificial Intelligence aspects attribute models b-graph behaviour boundary solid grammar Cagan Carnegie Mellon University complex components computational computer-aided design concepts configuration constraint network context context-free context-free grammars defined definition derived describe description formalisms design description design knowledge design problems design process design space descriptions discussion domain e(corridor elements emergence Engineering Design entities Environment and Planning Euler operations evaluation example exploration external finite set formal methods formal representations formalisation function Galileo4 genetic algorithms geometric Gero graph gripping GSMs Heisserman IFIP ill-structured initial instantiated knapsack problem label language logic nodes objects operations optimization parameters physical principles post interpretation prototypes relations represent rewrite rule schema semantics shape annealing shape grammars shape rules simulated annealing solution principles solving specification Stiny structure symbols syntax synthesis theory tion tool topology truss Tyugu University of Sydney variables vocabulary workpiece YMIR