American Society of Civil Engineers


Military Facility Cost Estimation System Using Case-Based Reasoning in Korea


by Sae-Hyun Ji, (Ph.D. Candidate, Dept. of Architecture, Seoul National Univ., San 56-1 Shinrim-dong, Seoul, Korea. E-mail: oldclock@snu.ac.kr), Moonseo Park, (corresponding author), M.ASCE, (Associate Professor, Dept. of Architecture, Seoul National Univ., San 56-1 Shinrim-dong, Seoul, Korea E-mail: mspark@snu.ac.kr), Hyun-Soo Lee, M.ASCE, (Professor, Dept. of Architecture, Seoul National Univ., San 56-1 Shinrim-dong, Seoul, Korea. E-mail: hyunslee@snu.ac.kr), Joseph Ahn, (Research Student, Dept. of Architecture, Seoul National Univ., San 56-1 Shinrim-dong, Seoul, Korea. E-mail: josephahn@snu.ac.kr), Namho Kim, (Programmer, M.S.E., Doalltech, 1580 Sangam-dong, Mapo-gu, Seoul, Korea. E-mail: namo@doalltech.com), and Bosik Son, (Assistant Professor, Dept. of Architectural Engineer, South Seoul Univ., Seobuk, Chonan, Korea. E-mail: bsson@nsu.ac.kr)

Journal of Computing in Civil Engineering, Vol. 25, No. 3, May/June 2011, pp. 218-231, (doi:  http://dx.doi.org/10.1061/(ASCE)CP.1943-5487.0000082)

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Document type: Journal Paper
Abstract: Numerous cost estimations are made repetitively in the initial stages of construction projects in response to ongoing scope changes and often need to be recalculated frequently. In practice, the square foot method, considered an effective method for time-saving, is widely used. However, this method requires a great amount of effort to calculate a unit price and does not consider the uniqueness of each case. Thus, the use of the square foot method could bring about unwanted consequences. For example, in the case of military projects in Korea, significant differences have been reported between estimations made using this method and the actual costs. In an effort to deal with this challenging issue, this research develops a military facility cost estimation (MilFaCE) system, based on case-based reasoning (CBR), using case data from 422 construction projects at 16 military facilities. Based on system validation experiments involving 10 military officers (engineers), the effectiveness of the system in terms of estimation accuracy and user-friendliness is confirmed. Consequently, this research can be a CBR application example of construction cost estimation and a basis for further research into the development of cost estimate systems.


ASCE Subject Headings:
South Korea
Construction costs
Databases
Military engineering
Estimation
Computation

Author Keywords:
Cost
Estimate
Case-based reasoning
Database