Cumincad : CUMINCAD Papers : Search Results

CumInCAD is a Cumulative Index about publications in Computer Aided Architectural Design
supported by the sibling associations ACADIA, CAADRIA, eCAADe, SIGraDi, ASCAAD and CAAD futures

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_id	454c
authors	Jun, H. and Gero, J.S.
year	1997
title	Representation, re-representation and emergence in collaborative computer-aided design
source	Maher, M.L., Gero, J.S. and Sudweeks, F. (eds), Preprints Formal Aspects of Collaborative Computer-Aided Design, Key Centre of Design Computing, University of Sydney, Sydney, pp. 303-320
summary	Representation of drawings in CAD systems can cause problems during design collaboration. The notion of re-representation is proposed as one way of addressing these problems. Furthermore, re-representation is one way of allowing emergence to occur; emergence is an important aspect of collaborative computer-mediated design. Based on the concept of re-representation a model for collaborative CAD supporting emergence is presented and an example is demonstrated.
keywords	Representation, Emergence, Collaborative CAD
series	journal paper
email
last changed	2003/05/15 21:33

_id	3dd3
authors	Gero, J.S. and Damski, J.
year	1997
title	A symbolic model for shape emergence
source	Environment and Planning B: Planning and Design 24 : 509-526
summary	This paper presents a shape representation at the symbolic level that extends the properties of shape in 2D and 3D using the same formalism. This representation is based on the concept of infinite maximal lines and planes. Constraints on their properties are used to define shapes and objects. A process model of shape emergence which relies on this representation is developed. Data-driven and hypothesis-driven approaches to shape and object emergence are demonstrated.
keywords	Shape Emergence
series	other
email
last changed	2003/04/06 08:46

_id	2483
authors	Gero, J.S. and Kazakov, V.
year	1997
title	Learning and reusing information in space layout problems using genetic engineering
source	Artificial Intelligence in Engineering 11(3):329-334
summary	The paper describes the application of a genetic engineering based extension to genetic algorithms to the layout planning problem. We study the gene evolution which takes place when an algorithm of this type is running and demonstrate that in many cases it effectively leads to the partial decomposition of the layout problem by grouping some activit ies together and optimally placing these groups during the first stage of the computation. At a second stage it optimally places activities within these groups. We show that the algorithm finnds the solution faster than standard evolutionary methods and that evolved genes represent design features that can be re-used later in a range of similar problems.
keywords	Genetic Engineering, Learning
series	other
email
last changed	2001/09/08 12:04

_id	c0da
authors	Gero, J.S., Kazakov, V. and Schnier, T.
year	1997
title	Genetic engineering and design problems
source	D. Dasgupta and Z. Michalewicz (Eds.), Evolutionary Algorithms in Engineering Applications, Springer Verlag, Berlin, pp.47-68
summary	This chapter reviews developments in genetic algorithms based on genetic engineering extensions. It presents the development a computational model of genetic engineering and demonstrates its applicability and utility.
keywords	Genetic Engineering, Learning
series	other
email
last changed	2003/04/06 07:18

_id	789d
authors	Kvan, Th., West, R. and Vera, A.
year	1997
title	Tools for a Virtual Design Community
source	Preprints Formal Aspects of Collaborative CAD, ed. M. L. Maher, J. S. Gero & F. Sudweeks, Sydney: Key Centre of Design Computing, Department of Architectural and Design Science, University of Sydney, pp. 109-123
summary	This paper proposes a methodology to evaluate the effects of computer-mediated communication on collaboratively solving design problems. When setting up a virtual design community; choices must be made between a variety of tools; choices dictated by budget; bandwidth; ability and availability. How do you choose between the tools; which is useful and how will each affect the outcome of the design exchanges you plan? A commonly used method is to analyze the work done and to identify tools which support this type of work. In general; research on the effects of computer-mediation on collaborative work has concentrated mainly on social-psychological factors such as deindividuation and attitude polarization; and used qualitative methods. In contrast; we propose to examine the process of collaboration itself; focusing on separating those component processes which primarily involve individual work from those that involve genuine interaction. Extending the cognitive metaphor of the brain as a computer; we view collaboration in terms of a network process; and examine issues of control; coordination; and delegation to separate sub-processors. Through this methodology we attempt to separate the individual problem-solving component from the larger process of collaboration.
keywords	CSCW; Group Work; Design; Expertise; Collaboration; Novice
series	other
email
last changed	2002/11/15 18:29

_id	9afb
authors	Maher, M.L., Simoff, S. and Cicognani, A.
year	1997
title	Observations from an experimental study of computer-mediated collaborative design
source	M.L. Maher, J.S. Gero, and F Sudweeks eds. Preprints Formal Aspects of Collaborative CAD, Key Centre of Design Computing, University of Sydney, Sydney, pp.165-185
summary	The use of computer technology in design practice is moving towards a distributed resource available to a team of designers. The development of software to support designers has been based largely on the assumption that there will be a single person using the software at a time. Recent developments have enabled the feasibility of software for two or more simultaneous users, leading to the possibility of computer-mediated collaborative design. Research in integrated CAD, virtual design studios, and design protocol studies provide the basis for a formal study of computer-mediated design. We develop an experimental study of computer-mediated collaborative design with the aim of collecting data on the amount and content of design semantics documented using computer applications when designing alone as compared to designing collaboratively. The experiment includes the definition of an hypothesis, aim, methodology, data collection and coding schemes. The experiment and some preliminary observations are presented, followed by directions for further research.
series	other
email
last changed	2003/04/23 15:14

_id	5a97
authors	Rosenman, M.A. and Gero, J.S.
year	1997
title	Collaborative CAD modelling in multidisciplinary design domains
source	Maher, M. L., Gero, J. S. and Sudweeks, F. (eds), Preprints Formal Aspects of Collaborative Computer-Aided Design, Key Centre of Design Computing, University of Sydney, Sydney, pp. 387-403
summary	In a multidisciplinary design environment, such as the AEC domain, the various designers will have their own concepts and representations of the design object making communication in such an environment a complex task. This paper argues for a multiple view approach based upon an assumption that different concepts of an object are based on different functional contexts. Thus an understanding of concepts such as function, purpose and intent is critical since the representation of the functional properties of design objects is the underlying basis for the formation of different concepts and coordination of these concepts. The paper points to the modelling of multidisciplinary design teams as cooperative intelligent agents in a distributed decisionmaking system where the explicit representation of function and purpose are essential, in a CAD environment, for the necessary communication of intent and effects.
series	journal paper
email
last changed	2003/05/15 21:33

_id	cc51
authors	Schnier, T. and Gero, J.S
year	1997
title	Dominant and recessive genes in evolutionary systems applied to spatial reasoning
source	A. Sattar (Ed.), Advanced Topics in Artificial Intelligence: 10th Australian Joint Conference on Artificial Intelligence AI97 Proceedings, Springer, Heidelberg, pp. 127-136
summary	Learning genetic representation has been shown to be a useful tool in evolutionary computation. It can reduce the time required to find solutions and it allows the search process to be biased towards more desirable solutions. Learn-ing genetic representation involves the bottom-up creation of evolved genes from either original (basic) genes or from other evolved genes and the introduction of those into the population. The evolved genes effectively protect combinations of genes that have been found useful from being disturbed by the genetic operations (cross-over, mutation). However, this protection can rapidly lead to situations where evolved genes in-terlock in such a way that few or no genetic operations are possible on some genotypes. To prevent the interlocking previous implementations only allow the creation of evolved genes from genes that are direct neighbours on the genotype and therefore form continuous blocks. In this paper it is shown that the notion of dominant and recessive genes can be used to remove this limitation. Using more than one gene at a single location makes it possible to construct genetic operations that can separate interlocking evolved genes. This allows the use of non-continuous evolved genes with only minimal violations of the protection of evolved genes from those operations. As an example, this paper shows how evolved genes with dominant and re-cessive genes can be used to learn features from a set of Mondrian paintings. The representation can then be used to create new designs that contain features of the examples. The Mondrian paintings can be coded as a tree, where every node represents a rectangle division, with values for direction, position, line-width and colour. The modified evolutionary operations allow the system to cre-ate non-continuous evolved genes, for example associate two divisions with thin lines, without specifying other values. Analysis of the behaviour of the system shows that about one in ten genes is a dominant/recessive gene pair. This shows that while dominant and recessive genes are important to allow the use of non-continuous evolved genes, they do not occur often enough to seriously violate the protection of evolved genes from genetic operations.
keywords	Evolutionary Systems, Genetic Representations
series	other
email
last changed	2003/04/06 07:24

_id	6537
authors	Wang, W. and Gero, J.S.
year	1997
title	Sequence-based prediction in the conceptual design of bridges
source	ASCE Journal of Computing in Civil Engineering 11(1): 37-43
summary	This paper explores the application of a machine learning technique in knowledge support systems in civil engineering design. It presents a sequence-based prediction method for engineering design and demonstrates its utility in the conceptual design of bridges. The basic idea of sequence-based prediction is that the most recent numbers of similar design cases are used in predicting the characteristics of the next design and more recent cases are given stronger influence on decision making in the new design situation than older ones. This paper develops a model of sequence-based prediction and carries out a number of experiments using it. It is then applide to a set of standard data and the results of using a sequence-based prediction method are compared with other methods. The empirical results show the potential applications of the method in engineering design.
keywords	Machine Learning, Time
series	journal paper
email
last changed	2003/05/15 21:45

_id	082c
authors	Gero, John S. and Park, Soo-Hoon
year	1997
title	Computable Feature-Based Qualitative Modeling of Shape
source	CAAD Futures 1997 [Conference Proceedings / ISBN 0-7923-4726-9] München (Germany), 4-6 August 1997, pp. 821-830
summary	This paper introduces and describes a qualitative approach to the modeling of shapes applicable at the early stage of designing. The approach is based on using qualitative codes at landmarks to describe shapes. These strings of codes can be analysed to determine patterns which map onto features. An analogy with language is drawn to assist in articulating the modeling ideas. An example is presented which demonstrates the utility of the approach.
series	CAAD Futures
email
last changed	2003/08/07 14:07

_id	6731
authors	Gero, John S. and Park, Soon Hoon
year	1997
title	Qualitative Representation of Shape and Space for Computer-Aided Architectural Design
source	CAADRIA ‘97 [Proceedings of the Second Conference on Computer Aided Architectural Design Research in Asia / ISBN 957-575-057-8] Taiwan 17-19 April 1997, pp. 323-334
doi	https://doi.org/10.52842/conf.caadria.1997.323
summary	In this paper we develop and describe a qualitative representation scheme for shapes which has the capacity to be utilised in the mappings to the semantics of spaces. The representation is founded on three types of qualitative codes based on landmark values for fundamental shape attributes. Qualitative values for these codes can vary to control the granularity of the representation. Structures in the resultant codings, which are the qualitative representation, can be analyzed to produce generic categories of shape features which provide a connection with "feature-based” models.
series	CAADRIA
email
last changed	2022/06/07 07:51

_id	caadria2007_659
id	caadria2007_659
authors	Chen, Zi-Ru
year	2007
title	The Combination of Design Media and Design Creativity _ Conventional and Digital Media
source	CAADRIA 2007 [Proceedings of the 12th International Conference on Computer Aided Architectural Design Research in Asia] Nanjing (China) 19-21 April 2007
doi	https://doi.org/10.52842/conf.caadria.2007.x.w5x
summary	Creativity is always interested in many fields, in particular, creativity and design creativity have many interpretations (Boden, 1991; Gero and Maher, 1992, 1993; Kim, 1990; Sternberg, 1988; Weisberg, 1986). In early conceptual design process, designers used large number of sketches and drawings (Purcell and Gero, 1998). The sketch can inspire the designer to increase the creativity of the designer’s creations(Schenk, 1991; Goldschmidt, 1994; Suwa and Tversky, 1997). The freehand sketches by conventional media have been believed to play important roles in processes of the creative design thinking(Goldschmidt, 1991; Schon and Wiggins, 1992; Goel, 1995; Suwa et al., 2000; Verstijnen et al., 1998; Elsas van and Vergeest, 1998). Recently, there are many researches on inspiration of the design creativity by digital media(Liu, 2001; Sasada, 1999). The digital media have been used to apply the creative activities and that caused the occurrenssce of unexpected discovery in early design processes(Gero and Maher, 1993; Mitchell, 1993; Schmitt, 1994; Gero, 1996, 2000; Coyne and Subrahmanian, 1993; Boden, 1998; Huang, 2001; Chen, 2001; Manolya et al. 1998; Verstijinen et al., 1998; Lynn, 2001). In addition, there are many applications by combination of conventional and digital media in the sketches conceptual process. However, previous works only discussed that the individual media were related to the design creativity. The cognitive research about the application of conceptual sketches design by integrating both conventional and digital media simultaneously is absent.
series	CAADRIA
email
last changed	2022/06/07 07:50

_id	2ad9
authors	Damski, José C. and Gero, John S.
year	1997
title	An Evolutionary Approach to Generating Constraint-Based Space Layout Topologies
source	CAAD Futures 1997 [Conference Proceedings / ISBN 0-7923-4726-9] München (Germany), 4-6 August 1997, pp. 855-864
summary	This paper describes a system to produce space layout topologies for architectural plans using an evolutionary approach. The layout specification is defined as a set of topological and directional constraints, which are used as a fitness function in the evolutionary system. The halfplane representation is used to represent the genotypes in the evolutionary system, for both arrangements of halfplanes and the figures generated from those arrangements. As the halfplane representation proposed here does not distinguish between straight and non-straight boundaries, at the symbolic level the spaces and the layouts produced can also be bounded by straight or non-straight lines. The well known rectangular (polyomino) arrangements become a particular case only.
series	CAAD Futures
email
last changed	1999/04/06 09:19

_id	cda8
authors	Gero, John S. and Cha, Myung Yeol
year	1997
title	Computable Representations of Patterns in Architectural Shapes
source	CAADRIA ‘97 [Proceedings of the Second Conference on Computer Aided Architectural Design Research in Asia / ISBN 957-575-057-8] Taiwan 17-19 April 1997, pp. 377-388
doi	https://doi.org/10.52842/conf.caadria.1997.377
summary	This paper develops a schema theory based approach to the representation of patterns in architectural shapes. This representation is capable of computer implementation. The adequacy of any representation is critical for information processing in computer-aided design. Shape representation using shape elements and spatial relationships are elaborated and the construction of shape schemas and characteristics of shape schema are investigated. A representation for patterns in architectural shapes is demonstrated.
series	CAADRIA
email
last changed	2022/06/07 07:51

_id	b5f4
authors	Gero, John S. and Ding, Lan
year	1997
title	Exploring Style Emergence in Architectural Designs
source	CAADRIA ‘97 [Proceedings of the Second Conference on Computer Aided Architectural Design Research in Asia / ISBN 957-575-057-8] Taiwan 17-19 April 1997, pp. 287-296
summary	This paper presents an evolutionary approach to style emergence in architectural designs. Emergence is the process of making features explicit which were previously only implicit. Style is considered as a set of common characteristics of a group of designs. It is interpreted using a language model as an analogy and is represented at the genetic level. An evolutionary system based on genetic engineering is developed. It emerges style by locating the genetic structures which produce that style. Preliminary results are presented.
series	other
email
last changed	2003/04/06 09:26

_id	e907
authors	Gero, John S. and Maher, Mary Lou
year	1997
title	A Framework for Research in Design Computing
source	Challenges of the Future [15th eCAADe Conference Proceedings / ISBN 0-9523687-3-0] Vienna (Austria) 17-20 September 1997
doi	https://doi.org/10.52842/conf.ecaade.1997.x.u2c
summary	Design computing has often been considered a subset of computer applications that assist the designer in documenting and analysing complex designs. As one of many areas in which computer applications have beeen developed, design computing has relied on software developers and vendors to implement and market software with the relevant features and utilities to support some aspects of design activity. In this paper we consider design computing as a research area, one in which the results of the research lead to more than additional computer programs and in fact lead to a better understanding of designing and computer support for designing.
keywords	CAAD, research, cognitive models, axiomatic models, conjecturalmodels
series	eCAADe
email
more	http://info.tuwien.ac.at/ecaade/proc/gero/gero.htm
last changed	2022/06/07 07:50

_id	455e
authors	Gero, John S. and Nath, Gourabmoy
year	1997
title	Formalising Situated Learning in Computer-Aided Design
source	CAAD Futures 1997 [Conference Proceedings / ISBN 0-7923-4726-9] München (Germany), 4-6 August 1997, pp. 801-808
summary	In this paper, we propose and begin to formalise an approach to machine learning in design called situated learning with the purpose of providing a foundation to developing better design tools in an agent-based framework. Situated learning theory postulates that the situations that an expert is exposed to forms the developmental conditions of expertise. We extend and adapt that theory for computer-aided design with the primary objective of learning the use of existing knowledge, rather than simply the knowledge itself. The idea behind situated learning is to learn situations and associate them with some knowledge with the intention of using the knowledge in similar situations.
series	CAAD Futures
email
last changed	1999/04/06 09:19

_id	a51c
authors	Gero, John S.
year	1997
title	What Are We Learning from Designers and its Role in Future CAAD Tools
source	CAAD Futures 1997 [Conference Proceedings / ISBN 0-7923-4726-9] München (Germany), 4-6 August 1997, pp. 61-70
summary	Recent research into the activity and behaviour of human designers as they design has provide an impetus to carry out research which underpins the development of new CAAD support tools. However, there are computational processes of interest in designing which are not modeled on human design processes. This paper outlines some of the design processes which are being researched based on our understanding of human designers and provides examples from some early implementations.
series	CAAD Futures
email
last changed	1999/04/06 09:19

_id	6375
authors	Gero, John S.
year	1997
title	Where Can We Go From Here? Some Implications of Current Research
source	CAADRIA ‘97 [Proceedings of the Second Conference on Computer Aided Architectural Design Research in Asia / ISBN 957-575-057-8] Taiwan 17-19 April 1997, p. 3
doi	https://doi.org/10.52842/conf.caadria.1997.
summary	The current focus in the internet and the world wide web mask some other underlying changes, based on current research, which are likely to occur in our use of computers as design aids. This talk draws on three streams of current research being conducted at the Key Centre of Design Computing as a platform to examining two possible directions for computer-based design aids.
series	CAADRIA
email
last changed	2022/06/07 07:51

_id	a5a3
authors	Jagielski, Romuald and Gero, John S.
year	1997
title	A Genetic Programming Approach to the Space Layout Planning Problem
source	CAAD Futures 1997 [Conference Proceedings / ISBN 0-7923-4726-9] München (Germany), 4-6 August 1997, pp. 875-884
summary	The space layout planning problem belongs to the class of NP-hard problems with a wide range of practical applications. Many algorithms have been developed in the past, however recently evolutionary techniques have emerged as an alternative approach to their solution. In this paper, a genetic programming approach, one variation of evolutionary computation, is discussed. A representation of the space layout planning problem suitable for genetic programming is presented along with some implementation details and results.
series	CAAD Futures
email
last changed	2003/02/23 11:00

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