CumInCAD is a Cumulative Index about publications in Computer Aided Architectural Design
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authors Schaaf, Joerg W. and Voss, Angi
year 1995
title Retrieval of Similar Layouts in FABEL using AspecT
source Sixth International Conference on Computer-Aided Architectural Design Futures [ISBN 9971-62-423-0] Singapore, 24-26 September 1995, pp. 617-626
summary In the FABEL project several approaches have been developed and published for retrieving similar cases in the domain of architectural design. In this paper we want to focus on a short description and foremost on integration of these approaches. We will introduce the most important approaches. As a first step towards integration, we suggest decomposing them into their main parts: representation of cases, similarity function and retrieval component. Using the first two parts each approach in a new search algorithm operating on a generic data structure, we built a shell called AspecT for an easy integration. We are positive that one can never have fully considered all aspects of a design. Therefore, we describe an open framework to define new aspects and to apply them depending on the context. Unfortunately, openness brings some difficulties along with it. One can not predict the importance of an aspect, until the situation assessment of the query is completed. In other words, it is impossible to define a static distribution of aspect weights that fits for all purposes. As a consequence, one can not predefine a static structure on the case base to speed tip retrieval processes. Dealing with this problem, we developed and published a special search algorithm that passes through a multidimensional case base, finding the best fitting cases within a short amount of time. This algorithm does not need any predefined structure on the case base except aspect specific relations between cases. Creativity of inventing new aspects of cases should not be hindered but one can ask whether or not a certain aspect are worth being regarded in searching for useful cases. The shell AspecT offers a tool to evaluate aspects. At first, formal criteria influence the initial weights of aspects but later on, the contribution of an aspect to find user accepted cases, determines the survival fitness of an aspect. The rule for living or dying is simple. Seldom used aspects disappear, whereas others become stronger. A short description regarding this work is given in last part.
keywords Case-Based Reasoning, Retrieval, Integration of Similarity Concepts, Architectural Design
series CAAD Futures
full text file.pdf (579,471 bytes)
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