International conference on construction engineering and project management (국제학술발표논문집)
- 2011.02a
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- Pages.182-186
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- 2011
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- 2508-9048(eISSN)
A METHOD OF REVISING RETRIEVED SIMILAR CASES IN GA-CBR COST MODELS
- Sooyoung Kim (Seoul National University) ;
- Hyun-Soo Lee (Seoul National University) ;
- Moonseo Park (Seoul National University) ;
- Sae-Hyun Ji (Seoul National University) ;
- Joseph Ahn (Seoul National University)
- Published : 2011.02.16
Abstract
Early cost estimates are important to decision-making for a construction project. Moreover, the possibility of reducing the project cost is getting less as the project is progressed. Case-based reasoning (CBR), which can be viewed as an effective method for early cost estimating, is widely utilized recently. Early cost estimates using CBR have advantages over the traditional ones as they produce reasonable outputs and self-studying is possible by simply adding new cases. Case-based reasoning is composed of a cycle of retrieve, reuse, revise, and retain process. However, in the majority of research cases, they are focused on how to retrieve the similar cases, instead of revising the cases which is expected to increase accuracy results of cost estimation. This research suggests a method of revising retrieved similar cases in a GA-CBR cost model which is widely studied and utilized for early cost estimating recently. To validate the proposed method, case study is conducted based on Korean public apartment projects.