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Badenfelt, U (2010) I trust you, I trust you not: a longitudinal study of control mechanisms in incentive contracts. Construction Management and Economics, 28(03), 10.

Bradley, P E (2010) An ultrametric interpretation of building related event data. Construction Management and Economics, 28(03), 26.

Chao, L-C (2010) Estimating project overheads rate in bidding: DSS approach using neural networks. Construction Management and Economics, 28(03), 99.

  • Type: Journal Article
  • Keywords: estimating; overheads; neural networks; statistical analysis; decision support systems
  • ISBN/ISSN: 0144-6193
  • URL: https://doi.org/10.1080/01446190903473782
  • Abstract:
    Project overheads estimation by applying a selected rate as a percentage of direct cost is used widely in bidding in construction, but the rate is prone to inaccuracy if it is selected subjectively. An improved approach is developed, a decision support system (DSS) based on a construction firm’s cost data and using a neural network model for mapping of overheads rates from project attributes. The estimating ability of the proposed DSS is continually updated by retraining the neural networks with accumulated cost data in an expanding project database. An illustrative example is provided, in which the creation and updating of a prototype neural network model were simulated using cost data for projects spanning six years. The model explains the effects of duration and direct cost on overheads rates that the regression method fails to account for. The results also give empirical evidence that the DSS is capable of improving accuracy through annual model updating and may be used as a means for implementing organizational learning. The methods for assessing the loss risk for a bid incorporating an estimate from the DSS are provided.

Fan, R Y C, Ng, S T and Wong, J M W (2010) Reliability of the Box–Jenkins model for forecasting construction demand covering times of economic austerity. Construction Management and Economics, 28(03), 54.

Jewell, C, Flanagan, R and Anaç, C (2010) Understanding UK construction professional services exports: definitions and characteristics. Construction Management and Economics, 28(03), 9.

Jones, S M, Ross, A and Sertyesilisik, B (2010) Testing the unfolding model of voluntary turnover on construction professionals. Construction Management and Economics, 28(03), 85.

Lowe, R (2000) Defining and meeting the carbon constraints of the 21st century. Building Research & Information, 28(03), 159–75.

Machado, M V, Roche, P M L, Mustieles, F and Oteiza, I d (2000) The fourth house: the design of a bio climatic house in Venezuela. Building Research & Information, 28(03), 196–211.

Pellegrini-Masini, G, Bowles, G, Peacock, A D, Ahadzi, M and Banfill, P F G (2010) Whole life costing of domestic energy demand reduction technologies: householder perspectives. Construction Management and Economics, 28(03), 29.

Smyth, H (2010) Construction industry performance improvement programmes: the UK case of demonstration projects in the ‘Continuous Improvement’ programme. Construction Management and Economics, 28(03), 70.

Thormark, C (2000) Including recycling potential in energy use into the life cycle of buildings. Building Research & Information, 28(03), 176–83.

Treloar, G J, Fay, R, Love, P E D and Iyer-Raniga, U (2000) Analysing the life-cycle energy of an Australian residential building and its householders. Building Research & Information, 28(03), 184–95.