Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/22637
Title: Fuzzy discrete-event simulation for modeling uncertain activity duration
Authors: Zhang, H
Li, H 
Tam, CM
Keywords: Construction industry
Fuzzy logic
Simulation
Issue Date: 2004
Publisher: Emerald Group Publishing Limited
Source: Engineering, construction and architectural management, 2004, v. 11, no. 6, p. 426-437 How to cite?
Journal: Engineering, construction and architectural management 
Abstract: Construction-oriented discrete-event simulation often faces the problem of defining uncertain information input, such as subjectivity in selecting probability distributions that result from insufficient or lack of site productivity data. This paper proposes incorporation of fuzzy set theory with discrete-event simulation to handle the vagueness, imprecision and subjectivity in the estimation of activity duration, especially when insufficient or no sample data are available. Based upon an improved activity scanning simulation algorithm, a fuzzy distance ranking measure is adopted in fuzzy simulation time advancement and event selection for simulation experimentation. The uses of the fuzzy activity duration and the probability distribution-modeled duration are compared through a series of simulation experiments. It is observed that the fuzzy simulation outputs are arrived at through only one cycle of fuzzy discrete-event simulation, still they contain all the statistical information that are produced through multiple cycles of simulation experiments when the probability distribution approach is adopted.
URI: http://hdl.handle.net/10397/22637
ISSN: 0969-9988
EISSN: 1365-232X
DOI: 10.1108/09699980410570184
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