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      Note on y-truncation: a simple approach to generating bounded distributions for environmental applications

      Bardsley, W. Earl
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      Bounded_commons.pdf
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      DOI
       10.1016/j.advwatres.2006.03.003
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      Bardsley, W.E. (2007). Note on y-truncation: a simple approach to generating bounded distributions for environmental applications. Advances in Water Resources, 30(1), 113-117.
      Permanent Research Commons link: https://hdl.handle.net/10289/3929
      Abstract
      It may sometimes be desirable to introduce bounds into probability distributions to formalise the presence of upper or lower physical limits to data to which the distribution has been applied. For example, an upper bound in raindrop sizes might be represented by introducing an upper bound to an exponential drop-size distribution. However, the standard method of truncating unbounded probability distributions yields distributions with non-zero probability density at the resulting bounds. In reality it is likely that physical bounding processes in nature increase in intensity as the bound is approached, causing a progressive decline in observation relative frequency to zero at the bound. Truncation below a y-axis point is proposed as a simple alternative means of creating more natural truncated probability distributions for application to data of this type. The resulting “y-truncated” distributions have similarities with the traditional truncated distributions but probability densities have the desirable feature of always declining to zero at the bounds. In addition, the y-truncation approach can also serve in its own right as a means
      Date
      2007
      Type
      Journal Article
      Publisher
      Elsevier
      Rights
      This is an author’s accepted version of an article published in the journal: Advances in Water Resources. ©2007 Elsevier Ltd.
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      • Science and Engineering Papers [3122]
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