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	a22a
authors	Heylighen, Ann and Neuckermans, Herman
year	2002
title	ARE ARCHITECTS NATURAL CASE-BASED DESIGNERS? EXPERTS SPEAKING
source	The Design Journal, Volume 5, Issue 2, 2002, pp. 8-22
summary	Addressing the subject of Case-Based Reasoning in design, this article reports on a series of in-depth interviews with expert architects/design teachers about the role of cases in design practice and education. Several ingredients of the Case-Based Design (CBD) recipe turned out to occur in real-world design, be it in a subtler version than CBD researchers usually assume. The article focuses primarily on design in architecture, yet the findings may be relevant for other design domains as well.
keywords	Architectural Design; Case-based Design; Design Education
series	journal paper
type	normal paper
email
last changed	2005/07/26 18:53

_id	ddssar0203
id	ddssar0203
authors	Alkass, Sabah and Jrade, Ahmad
year	2002
title	A Web-Based Virtual Reality Model for Preliminary Estimates of Hi-Rise Building Projects
source	Timmermans, Harry (Ed.), Sixth Design and Decision Support Systems in Architecture and Urban Planning - Part one: Architecture Proceedings Avegoor, the Netherlands), 2002
summary	Cost estimating of a construction project at its early stage is considered to be very important task since it will be used as a base to commit or otherwise not to commit funds to that project. Preparation of a reliableand realistic preliminary estimate to aid the decision makers to commit funds for a specific project is a complicated assignment. Traditional methods and operations produced unsatisfactory aid due to lack ofaccuracy especially in the pre-design stage of a project. This participates in the increase of percentage of bankruptcy in the construction industry, which has dramatically climbed up and ranked as 15 percent of thewhole bankruptcies claimed in Canada (Statistic Canada 1998). This paper presents a methodology for developing and a Web-based model to automate preliminary cost estimates for hi-rise buildings. This is achieved by integrating a database with design drawings in a Virtual Reality (VR) environment. The model will automatically generate preliminary estimates after modifying a 3D CAD drawing. It provides the user the option to visualize and simulate the drawing and its cost data through VR environment. Having done that, it will allow owners, architects and cost engineers to view a constructed building project, change its geometric objects and shapes, and accordingly generate a new conceptual cost estimate.
series	DDSS
last changed	2003/11/21 15:15

_id	c8cc
authors	Berridge, Philip and Brown, Andre
year	2002
title	A Touring Machine
doi	https://doi.org/10.52842/conf.ecaade.2002.488
source	Connecting the Real and the Virtual - design e-ducation [20th eCAADe Conference Proceedings / ISBN 0-9541183-0-8] Warsaw (Poland) 18-20 September 2002, pp. 488-493
summary	Contemporary developments in wireless communication and increases in the power and connectivity of hand-held devices present us with increasing opportunities to provide access to computing resources irrespective of geographical location. This increase in portability opens up a range of opportunities to allow access to important data on site. The work described here aims to increase the accessibility of data relating particularly to cities by integrating a palmtop device into a complementary suite of web-based tools. Central to the project are a database of underlying city data and a 3D model of the city.
series	eCAADe
email
last changed	2022/06/07 07:52

_id	ddssup0205
id	ddssup0205
authors	Deguchi, A., Tabira, Y., Matsuura, H., Nakano, H. and Arima, T.
year	2002
title	Integration System of Archaeological and Geographical Informationfor Planning in Historical Regions
source	Timmermans, Harry (Ed.), Sixth Design and Decision Support Systems in Architecture and Urban Planning - Part two: Urban Planning Proceedings Avegoor, the Netherlands), 2002
summary	This study aims to construct the GIS for supporting the planning process and archaeological analysis in the historical regions by integrating geographical data and archaeological data on the sites with ruinsand remains in various period from ancient through medieval which had been buried and was recently excavated in geologic layers and mounds. First, for understanding the trends of environmental condition the excavated sites, we analyze the relationship between the site location and the condition ofgeography and natural environment by using the constructed system.Secondary, we develop the system to make it possible to browse and operate the information on the GIS through the internet. This web GIS constructed by us supports sharing the information on planning for preservation of historical sites among city planners, archaeologists and citizens, and serve as a tool for the collaboration and the coordination of urban development and historical preservation. Finally, as the application with the GIS, we show the results of case studies and point out the merits and effects about usage of the GIS for archaeological analysis as well as learning the local history.
series	DDSS
last changed	2003/08/07 16:36

_id	9d2e
authors	Liu, H., Tang, M. and Frazer, J. H.
year	2002
title	A Knowledge Based Collaborative Design Environment
source	Gero JS and Brazier FMT (eds) (2002) Agents in Design 2002. Key Centre of Design Computing and Cognition, University of Sydney, pp. 233-246
summary	In this paper, we propose an agent based collaborative design environment in which human designers and software agents interact with each other, exchange design information and keep track of state information to assist with collaborative design. First of all, it presents a hierarchical multi-agent system architecture for integrating design and engineering tools, software agents and human specialists in an open environment. The hierarchical multi-agent system architecture offers a promising framework with their novel approaches for dynamically creating and managing design tasks in widely distributed and ever-changing design environments. Secondly, it introduces a collaborative design process model and the dynamic management approach for collaborative design process. Then, the structure of a design agent, its static knowledge and dynamic knowledge are introduced respectively. The knowledge based design approach provides a foundation for supporting reusable design activities. Finally, the cooperative design process is illustrated by a bicycle design example.
series	other
email
last changed	2003/05/10 10:16

_id	4544
authors	Morozumi, M., Shimokawa, Y. and Homma, R.
year	2002
title	Schematic design system for flexible and multi-aspect design thinking
source	Automation in Construction 11 (2) (2002) pp. 147-159
summary	A designer-friendly CAD for a schematic design is one of the important topics of CAD studies. There were attractive preceding studies aiming to develop a CAD that intended to enable designers to have flexible design thinking and interactively manipulate representation models. This paper has the same goals of study, but focuses on the needs to support flexible and multi-aspect design thinking. Though designers normally hope to elaborate on their ideas using separate sets of representation models suitable for respective studies, a present CAD that is designed to build a single set 3D model, has limited its ability as a tool for a schematic design. Assuming this as the base concept, authors have studied to develop a prototype of a schematic design system, customizing AutoCAD R14J: Schematic Design System '98 (SDS'98). It has convenient utilities both for building separate sets of representation models and for integrating and reconciling those models to build a single consolidate model. This paper discusses the common procedures of schematic design studies, necessary functional features for SDS, a case study of the system use, and finally, the advantages and the disadvantages of the proposed system.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	ga0227
id	ga0227
authors	Rafi, Ahmad
year	2002
title	Creative Multimedia: The Commodity of the 21st Century
source	International Conference on Generative Art
summary	The Digital Revolution has turned individuals, institutions, and businesses into a new form of collective wealth and prosperity. This revolution has effected a creativity burst that goes far beyond an increase in the number of those involved in design tasks and challenges, in both professional and amateur settings. The Internet in particular are not only distributing media but most importantly it is a reference platform in which ideas, talents and capabilities emerge and are refined, enhanced and perfected through the inspiring interplay of collaboration and competition. This paper briefly examines the relationship between art and science through the ages, discusses their recent re-convergence, and examines their current relationship via real world applications and productions. The study of such productions, their successes and the impact they have had in the marketplace based on designs and aesthetics instead of advanced technology appear to support the argument. It also highlights the need for accelerating this process and suggests that the re-convergence is a result of new technologies adopted by practitioners that include the effective visualisation and communication of ideas and concepts. These elements are widely found today in multimedia, which offers increased power and new abilities to both scientists and designers. This paper also highlights the need for the employment of emerging computer-based interactive technologies which will enhance the design process, better decision-making, increase the quality of communication and collaboration, lessen the errors and reduce the design cycles. A Multimedia Palette is proposed as a design platform to expose one's imagination, creative and innovative ideas, and provide a richer and more creative multimedia content design and development. Following encouraging first round results, an expanded version of the suggested platform has been experimented in the Faculty of Creative Multimedia, Multimedia University for the last 5 years, in integrating design and computer skills in the teaching and learning projects.
keywords	creativity, re-convergence, Multimedia Palette, Creative Multimedia
series	other
email
more	http://www.generativeart.com/
last changed	2003/08/07 17:25

_id	ddssar0228
id	ddssar0228
authors	Tunçer, B. and Stouffs, R.
year	2002
title	Modeling Cooperative Design Analyses
source	Timmermans, Harry (Ed.), Sixth Design and Decision Support Systems in Architecture and Urban Planning - Part one: Architecture Proceedings Avegoor, the Netherlands), 2002
summary	The study of precedents plays an important role in design and design education. Architecture students prepare analyses of prominent precedents with respect to various criteria. Such design analyses arerepresented and communicated through abstractions. Collections of these abstractions are stored, related, managed, and presented in digital environments. Such web-based environments can serve as anextensible library of design precedent analyses. The use of an extensive library by a collection of students requires a flexible and extensible information model for relating and integrating the various contributions. We propose a methodology that establishes an information model for digital architectural analysis environments. This model facilitates a rich information structure of abstraction entities and their relationships, both structural and semantic, offering increased value for accessing and browsing this information. Specifically, a rich information structure allows one to access the information from alternative views to those that are expressed by the individual abstractions. In this paper, we start bydiscussing precedent-based learning, and describe the abstraction model currently used for precedent documentation and analysis. We then present our methodology for achieving a rich information structure. We end the paper with a description of an implementation of this methodology as anarchitectural analysis construction and presentation environment for a second year design studio.
series	DDSS
last changed	2003/08/07 16:36

_id	6fbc
authors	Tunçer, Bige, Stouffs, Rudi and Sariyildiz, Sevil
year	2002
title	Cooperating on Architectural Analyses
doi	https://doi.org/10.52842/conf.ecaade.2002.020
source	Connecting the Real and the Virtual - design e-ducation [20th eCAADe Conference Proceedings / ISBN 0-9541183-0-8] Warsaw (Poland) 18-20 September 2002, pp. 20-27
summary	As part of a fourth semester architectural design studio, students perform an analysis of selected precedents according to various criteria. For this purpose, they are provided with a web-based environment for the storage and management of their analyses. In this way, , and By integrating the analysis results into a common, extensible, library, the students are able to benefit from a collaboration with peers, and draw upon each others’ results for comparisons and relationships between different design aspects or buildings. In order to support this integration and strengthen the collaboration, we are developing organization and presentation tools that are integrated within the webbased environment. In this paper, we describe the context as provided by the design studio course, reflect on the advantages of a web-based repository for managing design and analysis information, describe the techniques we are developing to improve this process, and present the implementation of the resulting tools within the web-based environment.
series	eCAADe
email
last changed	2022/06/07 07:57

_id	946b
authors	Zhou, Q., Krawczyk, R.J. and Schipporeit, G.
year	2002
title	From CAD to IAD: A Working Model of the Internet-based Engineering Consulting in Architecture
doi	https://doi.org/10.52842/conf.caadria.2002.073
source	CAADRIA 2002 [Proceedings of the 7th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 983-2473-42-X] Cyberjaya (Malaysia) 18–20 April 2002, pp. 073-80
summary	Information technology has become so powerful that what is conventionally called CAD might evolve into iAD (Internet Aided Design) in the near future (Zhou 2000). For Internet applications in the AEC industry, most of the efforts and success have been concentrated on project management and collaboration, while in the design and engineering consulting area, limited progress has been made. During the period of Internet development, the nature of the fragmentation of the AEC industry has not been changed. Based on previous research of surveys of development of Internet applications in the AEC industry (Zhou 2001), and the study of information technology both available today and in the near future, we propose a general abstracted model of an Internet-based consulting system by integrating a variety of disciplines and functions of design and construction processes. This model will cover a range of design phases, such as, information gathering, automatic remote consultation, specific problem solving, and collaboration. Finally, in future follow up research, we will apply the proposed model to steel construction in architectural design, and develop a prototype simulation by selecting one type of structural system.
series	CAADRIA
email
last changed	2022/06/07 07:57

_id	ddssup0201
id	ddssup0201
authors	Alexiou, K. and Zamenopoulos, T.
year	2002
title	Artificial Design and Planning Support: Interactive Plan Generation andCoordination in Distributed Decision-Making
source	Timmermans, Harry (Ed.), Sixth Design and Decision Support Systems in Architecture and Urban Planning - Part two: Urban Planning Proceedings Avegoor, the Netherlands), 2002
summary	In this paper we discuss some basic issues pertaining to artificial plan design as a paradigm for architectural design and urban planning support. We present a model for artificial design generation based on learning control methodologies. Plan design is seen as a search for "coordinated" solutions (changes) that satisfy distributed domain requirements and views expressed by human or artificial agents. Learning control is used as a method to search for solutions that direct partial descriptionsproduced by agents, to follow their dynamically defined targets -despite conflicting requirements. The model is simulated for land use and layout plan design, involving decisions for the location and physical configuration of a hypothetical housing and retail development.
series	DDSS
last changed	2003/11/21 15:15

_id	c839
authors	Hwang, Jie-Eun
year	2002
title	SpaceScope: Developing a Spatial Information Retrieval System - Focused on Apartment Unit Floor Plans -
source	Yonsei University, Dept. of Housing & Interior Design
summary	This research investigates the spatial information retrieval (IR) in architecture focused on constructing efficient metadata that is crucial for data retrieval. Generally speaking, metadata is ‘structured data about data’ to describe resources especially in a digital format. In this research, metadata is a sort of data object to be useful in searching spatial information. Metadata is also used to describe raw spatial data object as not only attribute data but also content structurally and semantic ally. There are two issues that motivate this research; 1) what is the spatial information – that materializes the intangible space as a data object, and 2) how we can search the information efficiently – the content-based information retrieval. Although knowledge of a building’s spatial content is most important in architecture, there has been no logical method to manage it. From the viewpoint of content-based retrieval, the researcher analyzes spatial information of a floor plan, with a focus on the apartment unit floor plan common in Korea. Then the metadata items are extracted in a structured manner. To manage the items efficiently, the researcher develops a data model for spatial information according to the concept of the “Structured Floor Plan”. The main object of content to retrieve is a spatial network that consists of nodes of spaces and their linkages. There are two ways to organize the metadata: the traditional index files and the RDF (Resource Description Framework). While the index files are still efficient with computability, the RDF applies greater options to retrieve, such as fuzzy predicates, semantic predicates, and so on. To exploit the metadata, this research shows several possibilities of query operations that present a set of sample queries about L-DK(Living room – Dining room – Kitchen). Implementation of the prototype system is divided into three parts: 1) a modeling module using Vitruvius; 2) an indexing module using MS SQL Server? 2000 in conjunction XML; and 3) a browsing module using the SpaceScope browser. The future works may consider XML-based databases and a knowledge based query language, such as RQL/XQL, working on such databases. The more specific domain knowledge is involved, the more practical systems would be. Even in architecture, there may be a diverse range of domain knowledge, such as design, building performance, facility management, energy management, post occupied evaluation, historical research, and so on. Also the issue of interface should be investigated in depth, so that it will be adequate to the needs of the architectural field.
keywords	Content-based Information Retrieval; Metadata; RDF; XML; Spatial Information; Apartment Floor Plan; Semantics
series	thesis:MSc
email
last changed	2003/04/25 07:27

_id	ddssar0224
id	ddssar0224
authors	Mardjono, F., Trum, H.M.G.J. and Janssen, J.
year	2002
title	Development of a Decision Support Tool for Bamboo Building Design
source	Timmermans, Harry (Ed.), Sixth Design and Decision Support Systems in Architecture and Urban Planning - Part one: Architecture Proceedings Avegoor, the Netherlands), 2002
summary	The design process of a bamboo building is sometimes very complex for building designers, since there is no accepted design methodology for it. This process may be caused by a lack of relevant information provided to the designer. Based on this issue, this paper proposes a decision support system for application in bamboo building design that might be helpful for the designer in his/her design process. For this purpose, a decision support tool for bamboo building design process is being developed. Thedevelopment of the tool uses approaches, i.e. a taxonomy of bamboo building to identify the design problems, IDEFÆ to model the decision support tool, and develops a dedicated tool for Bamboo building design process. This tool has been tested in an international bamboo-housing workshop, hence results, suggestions, and recommendations from the workshop will be analysed. With this tool, the bamboo-building designer can make a bamboo building design in a systematic way. This tool also helpsthe designer to be as best informed, explicit, correct, and complete as possible during the design process.
series	DDSS
last changed	2003/08/07 16:36

_id	156e
authors	Tsou, J.-Y., Chow, B. and Lam, S.
year	2002
title	Performance-Based Simulation for the Planning and Design of Hyper Dense Urban Habitation
doi	https://doi.org/10.52842/conf.caadria.2002.249
source	CAADRIA 2002 [Proceedings of the 7th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 983-2473-42-X] Cyberjaya (Malaysia) 18–20 April 2002, pp. 249-256
summary	The rapid development of the economy and urbanization create great pressure on population of Hong Kong, China and other developing countries. This not only brings great changes on the form and style of the urban sphere, but also, challenges to the natural environment and resources to support urban habitation. Regarding the process of urbanization, the development of the housing industry becomes the focus to resolve the need of materialization for urban living. For this reason, from time to time, technical and economical considerations are always prior to the significance of human settlement environment, humanity, and sustainable development. Considering the deficiency in urban human settlements environment, especially in responsiveness to the natural environment. Information technology (IT) undoubtedly can help to promote and assess the design and planning quality in both environmental and regional microenvironment aspects. A research project-Environmental Responsible Architecture and Urban Design (ERAU)-is established to support urban scale planning, information processing, and computer-aided performance evaluation on both micro and macro building design and planning efficiency.
series	CAADRIA
email
last changed	2022/06/07 07:57

_id	9c41
authors	Ahmad Rafi, M.E., Chee W.K., Mai, N., Ken, T.-K. N. and Sharifah Nur, A.S.A. (Eds.)
year	2002
title	CAADRIA 2002 [Conference Proceedings]
doi	https://doi.org/10.52842/conf.caadria.2002.
source	Proceedings of the 7th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 983-2473-42-X / Cyberjaya (Malaysia) 18–20 April 2002, 370 p.
summary	Evolution of trends in the realm of computer aided architectural design (CAAD) has seen the convergence of technologies – complementing traditional tools with emerging sciences like Information Technology (IT) and multimedia applications. This appliqué of technologies has not just expanded the scope and enhanced the realm of CAAD research and practice, but is also breaking new frontiers. This creative nexus will be realised at the 7th International Conference on Computer Aided Architectural Design Research In Asia (CAADRIA 2002) to be held at the Faculty of Creative Multimedia, Multimedia University, Malaysia, between 18th-20th April, 2002. CAADRIA 2002’s theme, "Redefining Content", seeks to recognise and infuse these emerging components in the field of architecture and design with a holistic approach towards online, digital and interactive systems. The 41 papers compiled were selected through a blind review process conducted by an international review panel. To reflect the multi-disciplinary nature of this year's conference, the chapters are arranged topically to facilitate the in-depth study of key components. The component sessions include: // Web Design, Database and Networks // CAD, Modelling and Tools // Collaborative Design, Creative Design and Case Reasoning // Simulation and Prototyping // Virtual Environment and Knowledge Management // Design Education, Teaching and Learning /// We believe that this specialised approach will provide a deeper and more illuminating feel of the various components and their critical convergence in the field of architecture and design.
series	CAADRIA
email
more	www.caadria.org
last changed	2022/06/07 07:54

_id	c229
authors	Cavazos, María Estela Sánchez
year	2002
title	Experiencia en Digitalización de Procesos de Diseño Arquitectónico Caso Taller de Modelación Espacial, Universidad Autónoma de Aguascalientes [Experience in Digitalization Processes of Architectural Design: Study Case of Space Modeling, Independent University of Aguascalientes ]
source	SIGraDi 2002 - [Proceedings of the 6th Iberoamerican Congress of Digital Graphics] Caracas (Venezuela) 27-29 november 2002, pp. 252-256
summary	This project has been based in an experience that took time in the years 1999 and 2000 where a group of 13 students of the Architectonic Design Masters in the U.A.A. were submitted to a project that consisted in register their Architectonic Design Processing during a year with the main purpose of having the most complete material possible to be used as material for different research projects. At the end of the architectonic project the students scanned all the graphics and ordered them in the format that was established by the group using ACDSee32 as the program, which resulted very simple to manage and permitted to order the graphics and write comments to them as it was thought. The result obtained was 12 ordered texts by seven segments pefectly identifi ed and with easy manage for any investigation that you want to realice with them, in fact today exist two fi nished investigations that were realized with this information added to one formal investigation and some informal in process.
series	SIGRADI
email
last changed	2016/03/10 09:48

_id	ga0237
id	ga0237
authors	Ciao, Quinsan
year	2002
title	Generative Design: Rule-Based Reasoning in Design Process
source	International Conference on Generative Art
summary	As emphasized by Professor Soddu’s series of pioneer works on generative design, the fundamental theoretical base can be generallyconsidered as a design process that generates design by the initiation, developing and manipulation with designers’ objectives as well as theirassociated set of rules. This process is, in a broad sense, a reasoning process that follows the rules being set forth. In many cases, the rules arecommon logic that governs our reasoning, while in others they are more special rules that restrict the generating process to a confined space.Computer assisted generative design has made impressive progress over the past decade, along with the rapid growing capacity and speed ofcomputers as well as development and discovery of rules, rule setting and effective manipulating schemes and algorithms. After manyimpressive progress and remarkable results has demonstrated from time to time, however, theoretical foundation of such design approach, orthe significance of awareness of such approach has not been thoroughly treated, recognized and discussed, not to mention clearly understood.
series	other
more	http://www.generativeart.com/
last changed	2003/08/07 17:25

_id	6e0a
authors	Craig, David Latch and Zimring, Craig
year	2002
title	Support for collaborative design reasoning in shared virtual spaces
source	Automation in Construction 11 (2) (2002) pp. 249-259
summary	This paper discusses collaborative design, emphasizing the elaboration and transformations of a problem space, and the role that unstructured verbal communication and graphic communication can play in these processes. An asynchronous collaborative system, called the Immersive Discussion Tool (IDT), is introduced as a means for supporting productive design exchanges. IDT allows collaborators to reason about 3-D models over the Internet using view-dependent and view-independent diagrammatic marks, dynamic simulations, geometric design surrogates and text annotations. IDT relies on VRML to view the models, with an extensive Java-based interface driving the interactive behavior, including the construction and playback of graphical annotations, the management of threaded discussions, and the management of file input/output. The development and initial implementation of IDT has revealed the difficulty of constructing complex marks in a virtual 3-D space. Possible strategies for dealing with these problems are suggested.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	ecaade03_595_49_delic
id	ecaade03_595_49_delic
authors	Delic, Davor and Turk, Ziga
year	2003
title	HYCE – Hyperlearning in Civil Engineering Curricula A Pilot Course in Implementation of Information Technology Course - a Case Study at the Faculty of Civil Engineering, University of Zagreb
doi	https://doi.org/10.52842/conf.ecaade.2003.595
source	Digital Design [21th eCAADe Conference Proceedings / ISBN 0-9541183-1-6] Graz (Austria) 17-20 September 2003, pp. 595-600
summary	Outline of development of a revised base ITC course at the Faculty is shown here. The course, called Introduction To Information Technology Implementation is aimed for 2nd year students (3rd semester) of the study. For the first time it was held in the winter semester of 2002/03 as a pilot course replacing the old way of course delivery. This implementation was carried out through a “pathfinder” project WORMES from February 2002 till March 2003 and would be used as a template for future Hyperlearning implementation on other courses through other Faculty education programes. The objective was to establish continuous students teamwork around a problem – a project completely accomplished in IT surround. A slightly adapted methodology known as Hyperlearning – a version of Problem Based Learning, was chosen as a based learning methodology for a new way of course delivery. The gained results were really impressive. Not only efficiency of delivery was increased in many ways (less hours spent on exercises, better knowledge detaining...) but also huge enthusiasm among students was constantly maintained and their creativity was emphasized surprisingly. A lot of data were collected, analyzed and some of the results are published here.
keywords	Hyperlearning, Problem based learning, IT course development
series	eCAADe
email
more	http://www.grad.hr
last changed	2022/06/07 07:55

_id	349e
authors	Durmisevic, Sanja
year	2002
title	Perception Aspects in Underground Spaces using Intelligent Knowledge Modeling
source	Delft University of Technology
summary	The intensification, combination and transformation are main strategies for future spatial development of the Netherlands, which are stated in the Fifth Bill regarding Spatial Planning. These strategies indicate that in the future, space should be utilized in a more compact and more efficient way requiring, at the same time, re-evaluation of the existing built environment and finding ways to improve it. In this context, the concept of multiple space usage is accentuated, which would focus on intensive 4-dimensional spatial exploration. The underground space is acknowledged as an important part of multiple space usage. In the document 'Spatial Exploration 2000', the underground space is recognized by policy makers as an important new 'frontier' that could provide significant contribution to future spatial requirements.In a relatively short period, the underground space became an important research area. Although among specialists there is appreciation of what underground space could provide for densely populated urban areas, there are still reserved feelings by the public, which mostly relate to the poor quality of these spaces. Many realized underground projects, namely subways, resulted in poor user satisfaction. Today, there is still a significant knowledge gap related to perception of underground space. There is also a lack of detailed documentation on actual applications of the theories, followed by research results and applied techniques. This is the case in different areas of architectural design, but for underground spaces perhaps most evident due to their infancv role in general architectural practice. In order to create better designs, diverse aspects, which are very often of qualitative nature, should be considered in perspective with the final goal to improve quality and image of underground space. In the architectural design process, one has to establish certain relations among design information in advance, to make design backed by sound rationale. The main difficulty at this point is that such relationships may not be determined due to various reasons. One example may be the vagueness of the architectural design data due to linguistic qualities in them. Another, may be vaguely defined design qualities. In this work, the problem was not only the initial fuzziness of the information but also the desired relevancy determination among all pieces of information given. Presently, to determine the existence of such relevancy is more or less a matter of architectural subjective judgement rather than systematic, non-subjective decision-making based on an existing design. This implies that the invocation of certain tools dealing with fuzzy information is essential for enhanced design decisions. Efficient methods and tools to deal with qualitative, soft data are scarce, especially in the architectural domain. Traditionally well established methods, such as statistical analysis, have been used mainly for data analysis focused on similar types to the present research. These methods mainly fall into a category of pattern recognition. Statistical regression methods are the most common approaches towards this goal. One essential drawback of this method is the inability of dealing efficiently with non-linear data. With statistical analysis, the linear relationships are established by regression analysis where dealing with non-linearity is mostly evaded. Concerning the presence of multi-dimensional data sets, it is evident that the assumption of linear relationships among all pieces of information would be a gross approximation, which one has no basis to assume. A starting point in this research was that there maybe both linearity and non-linearity present in the data and therefore the appropriate methods should be used in order to deal with that non-linearity. Therefore, some other commensurate methods were adopted for knowledge modeling. In that respect, soft computing techniques proved to match the quality of the multi-dimensional data-set subject to analysis, which is deemed to be 'soft'. There is yet another reason why soft-computing techniques were applied, which is related to the automation of knowledge modeling. In this respect, traditional models such as Decision Support Systems and Expert Systems have drawbacks. One important drawback is that the development of these systems is a time-consuming process. The programming part, in which various deliberations are required to form a consistent if-then rule knowledge based system, is also a time-consuming activity. For these reasons, the methods and tools from other disciplines, which also deal with soft data, should be integrated into architectural design. With fuzzy logic, the imprecision of data can be dealt with in a similar way to how humans do it. Artificial neural networks are deemed to some extent to model the human brain, and simulate its functions in the form of parallel information processing. They are considered important components of Artificial Intelligence (Al). With neural networks, it is possible to learn from examples, or more precisely to learn from input-output data samples. The combination of the neural and fuzzy approach proved to be a powerful combination for dealing with qualitative data. The problem of automated knowledge modeling is efficiently solved by employment of machine learning techniques. Here, the expertise of prof. dr. Ozer Ciftcioglu in the field of soft computing was crucial for tool development. By combining knowledge from two different disciplines a unique tool could be developed that would enable intelligent modeling of soft data needed for support of the building design process. In this respect, this research is a starting point in that direction. It is multidisciplinary and on the cutting edge between the field of Architecture and the field of Artificial Intelligence. From the architectural viewpoint, the perception of space is considered through relationship between a human being and a built environment. Techniques from the field of Artificial Intelligence are employed to model that relationship. Such an efficient combination of two disciplines makes it possible to extend our knowledge boundaries in the field of architecture and improve design quality. With additional techniques, meta know/edge, or in other words "knowledge about knowledge", can be created. Such techniques involve sensitivity analysis, which determines the amount of dependency of the output of a model (comfort and public safety) on the information fed into the model (input). Another technique is functional relationship modeling between aspects, which is derivation of dependency of a design parameter as a function of user's perceptions. With this technique, it is possible to determine functional relationships between dependent and independent variables. This thesis is a contribution to better understanding of users' perception of underground space, through the prism of public safety and comfort, which was achieved by means of intelligent knowledge modeling. In this respect, this thesis demonstrated an application of ICT (Information and Communication Technology) as a partner in the building design process by employing advanced modeling techniques. The method explained throughout this work is very generic and is possible to apply to not only different areas of architectural design, but also to other domains that involve qualitative data.
keywords	Underground Space; Perception; Soft Computing
series	thesis:PhD
email
last changed	2003/02/12 22:37

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