Chapter
Apr 26, 2012
A Zero-Inflated Bayesian Model for the Prediction of Water Pipe Bursts
Authors: T. Economou, Z. Kapelan, and T. BaileyAuthor Affiliations
Publication: Water Distribution Systems Analysis 2008
Abstract
The processes and mechanisms giving rise to failures in repairable systems such as underground water pipes are quite complex and not quite fully understood yet. Therefore flexible statistical models that try to explain these processes are necessary. Data available on pipe breaks is usually poor and left truncated resulting in data sets in which a significant number of pipes have no failures recorded at all. Trying to apply flexible point process models such as the NHPP to such data may limit the ability to adequately capture the failure process. In this paper a zero-inflated NHPP is proposed which tries to deal with such problems. The new model is tested on the real-life pipe data set. The results obtained show that although the zero-inflated NHPP did not outperform the NHPP in general, it provided a better fit to the data and slightly more precise results.
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Copyright
© 2008 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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ASCE Technical Topics:
- Analysis (by type)
- Bayesian analysis
- Buried pipes
- Construction engineering
- Construction methods
- Data analysis
- Engineering fundamentals
- Failure analysis
- Infrastructure
- Methodology (by type)
- Pipe failures
- Pipeline management
- Pipeline systems
- Pipelines
- Pipes
- Rehabilitation
- Research methods (by type)
- Statistical analysis (by type)
- Water pipelines
Authors
Affiliations
T. Economou
University of Exeter, Mathematics Research Institute, Harrison Building, North Park Road, Exeter EX4 4QF, UK
Z. Kapelan
University of Exeter, Centre for Water Systems, Harrison Building, North Park Road, Exeter EX4 4QF, UK
T. Bailey
University of Exeter, Mathematics Research Institute, Harrison Building, North Park Road, Exeter EX4 4QF, UK
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