Wu, R W K and Hadipriono, F C (1994) Fuzzy modus ponens deduction technique for construction scheduling. Journal of Construction Engineering and Management, 120(1), pp. 162-179. ISSN 0733-9364
Abstract
This paper presents a new method to estimate the duration of construction activities. A model, Activity Duration Decision Support System (ADDSS), was developed. This model employs the fuzzy modus ponens deduction (FMPD) technique to evaluate the impact of different factors on activity duration. The linguistic values of these factors are represented by angular fuzzy set models. The technique described in this paper allows a scheduler to partially match an evidence with a rule. The use of angular models demonstrates the use of a single and relatively simple fuzzy logic formula. The technique we developed does not require the scheduler to understand the underlying concept of fuzzy logic. In fact, one needs only to input an assessment of factors that may affect the completion of an activity. At this stage, ADDSS interfaces with the CA-SuperProject scheduling package. ADDSS was also developed to export and import data to and from the CA-SuperProject. Both the logic operations and angular models of ADDSS are elaborated. A step-by-step procedure using ADDSS is presented, followed by case studies demonstrating the implementation of ADDSS in hypothetical and real construction projects. These cases show the practicality and applicability of ADDSS.
| Item Type: | Article |
|---|---|
| Index terms: | implementation, estimate, duration, export, construction activity, import, fuzzy set, package, case study, construction scheduling, fuzzy logic, construction project, evidence, scheduler, scheduling, decision support |
| Subjects: | decision-making and optimization, project controls, decision analysis, production management, contractual arrangements, construction operations, data science, economic analysis, financial and cost management, operations research, practitioner, evaluation and assessment methods, data collection methods |
| Topics: | Digital Applications, Site Management, Time Control, Project Management, Research Practice, Cost Management, Business Strategy, Procurement, Roles and Professions, Risk Management |
| Descriptive scope: | 4 PCEA |
N.B. Descriptive scope is a count of how many of the five facets of empirical research are indicated by the words used in title, abstract and keywords. It is not intended as a judgement on the research; merely a count of the kind of word we would expect to indicate Phenomenon, Concepts, Theoretical framing, Empirical techniques, Analytical techniques. If all five are present, then a code of “5 PCTEA” will indicate this. If you feel the coding for this record is questionable, we welcome discussion around the terms we matched or the way we categorized them. The facet you would expect may not be coded, or a facet may be coded inappropriately. This can also bear on a larger question, of which facets should be treated as defining in construction management research. Please get in touch, and we will look at it. More details here