Dissanayaka, S M and Kumaraswamy, M M (1999) Evaluation of factors affecting time and cost performance in Hong Kong building projects. Engineering, Construction and Architectural Management, 6(3), pp. 287-298. ISSN 0969-9988
Abstract
Time and cost are usually critical to construction clients. Given the many contributory factors, improved quantitative models of time and cost may help clients to predict project outcomes at the outset, and also at different stages of the project life span. These can also help to compare deviations in significant contributory factors, and to suggest corrective actions. Multiple linear regression (MLR) and artificial neural networks (ANN) were applied in developing such quantitative models in a research project based in Hong Kong. A comparative study indicated that ANN had better prediction capabilities than MLR by itself. Significant factors identified through quantitative models developed, indicated that time over-run levels were mainly governed by non-procurement related factors (e.g. project characteristics and client/client representative characteristics), while cost over-run levels were significantly influenced by both procurement and non-procurement related factors (e.g. project characteristics, client/client representative characteristics and contractual payment modalities). A parallel approach yielded interesting comparisons of the variations of mean time and cost over-runs, when comparing groups of projects using different procurement sub-systems, from the Hong Kong sample.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | artificial neural network; multiple linear regression; non-procurement factor; performance; procurement |
| Index terms: | deviation, cost performance, artificial neural network, construction client, variation, Hong Kong, comparative study, contributory factor, project outcome |
| Subjects: | contractual condition, research design and methodology, modelling and simulation, economics, Geography, financial and cost management, project completion, risk assessment, practitioner |
| Topics: | Roles and Professions, Cost Management, Geographical Context, Project Management, Risk Management, Research Practice, Contract Administration |
| Descriptive scope: | 3 PCA |
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