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New entropy-based method for variables selection and its application to the debris-flow hazard assessment

✍ Scribed by Chien-chih Chen; Chih-Yuan Tseng; Jia-Jyun Dong

Publisher: Elsevier Science
Year: 2007
Tongue: English
Weight: 648 KB
Volume: 94
Category: Article
ISSN: 0013-7952
DOI: 10.1016/j.enggeo.2007.06.004

No coin nor oath required. For personal study only.

✦ Synopsis

We propose a new data analyzing scheme, the method of minimum entropy analysis (MEA). New MEA method provides a quantitative criterion for selecting relevant variables to model the studied physical system. This method can be easily extended to the analyses of various geophysical/geological data, where many relevant or irrelevant available measurements may obscure the understanding of the highly complicated physical system like the occurrence of debris-flows. After demonstrating and testing the MEA method, we apply this method to a dataset of debris-flow occurrences in Taiwan and successfully identify three relevant variables, i.e. the hydrological form factor, landslide area, and number of landslides, to the occurrence of observed debris-flow events by the 1996 Typhoon Herb.

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