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AbouRizk, S M, Halpin, D W and Wilson, J R (1991) Visual Interactive Fitting of Beta Distributions. Journal of Construction Engineering and Management, 117(04), 589–605.

  • Type: Journal Article
  • Keywords: Simulation models; Construction planning; Computer software; Microcomputers; Project management; Computation; Probabilistic models;
  • ISBN/ISSN: 0733-9364
  • URL: https://doi.org/10.1061/(ASCE)0733-9364(1991)117:4(589)
  • Abstract:
    This paper describes a visual interactive procedure for fitting beta distributions to activity times in a simulation model when sample data are not available for statistical analysis of the model's input processes. Using subjective information about a given activity time the modeler specifies the activity's minimum and maximum times together with two of the following characteristics: mode, mean, variance, or selected percentiles. The fitting procedure includes efficient methods for computing the shape parameters of the beta distribution that most nearly matches the specified characteristics. The user can manipulate the fitted distribution by either revising the specified characteristics or directly altering a visual display of the density. This fitting procedure was implemented in a public‐domain microcomputer‐based software system called VIBES (visual interactive beta estimation system). An example from construction engineering illustrates the operation of VIBES.

Abudayyeh, O Y and Rasdof, W J (1991) Design of Construction Industry Information Management Systems. Journal of Construction Engineering and Management, 117(04), 698–715.

Bernold, L E and Treseler, J F (1991) Vendor Analysis for Best Buy in Construction. Journal of Construction Engineering and Management, 117(04), 645–58.

Cole, L J R (1991) Construction Scheduling: Principles, Practices, and Six Case Studies. Journal of Construction Engineering and Management, 117(04), 579–88.

De La Garza, J M and Mitropoulos, P (1991) . Journal of Construction Engineering and Management, 117(04), 736–55.

De La Garza, J M, Vorster, M C and Parvin, C M (1991) Total Float Traded as Commodity. Journal of Construction Engineering and Management, 117(04), 716–27.

de Neufville, R and King, D (1991) Risk and Need‐for‐Work Premiums in Contractor Bidding. Journal of Construction Engineering and Management, 117(04), 659–73.

Kakoto, T and Skibniewski, M (1991) Engineering Decision Support of Automated Shield Tunneling. Journal of Construction Engineering and Management, 117(04), 674–90.

Moselhi, O, Hegazy, T and Fazio, P (1991) Neural Networks as Tools in Construction. Journal of Construction Engineering and Management, 117(04), 606–25.

Reinschmidt, K F, Griffis, F H ( and Bronner, P L (1991) Integration of Engineering, Design, and Construction. Journal of Construction Engineering and Management, 117(04), 756–72.

Riggs, L S and Hills, J W (1991) Implications for U.S. Construction Companies in 1992 European Community. Journal of Construction Engineering and Management, 117(04), 773–90.

Rowings, J E (1991) Project‐Controls Systems Opportunities. Journal of Construction Engineering and Management, 117(04), 691–7.

Sanders, S R and Thomas, H R (1991) Factors Affecting Masonry‐Labor Productivity. Journal of Construction Engineering and Management, 117(04), 626–44.

Touran, A (1991) Modeling Uncertainty in Operations with Nonstationary Cycle Times. Journal of Construction Engineering and Management, 117(04), 728–35.