Bootstrap Techniques in the Partial Linear Model
2016-04
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Bootstrap Techniques in the Partial Linear Model
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2016-04
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As a tree grows, the trunk diameter increases, and in a typical year, a tree-ring is produced. The width of this ring reflects growing conditions during the year -- when standardized, a wider ring indicates better growing conditions. Thus, tree-rings contain yearly climatic information, such as precipitation and temperature. Tree-ring records exist for thousands of years in many locations across the earth, and a goal of paleoclimatologists is to use these records to understand past climate. A subset of records from the international tree-ring data bank (ITRDB) for Pinus ponderosa is introduced and analyzed in this talk. We specifically address what significant signals (long or short term) are included in this chronology. A newly proposed resampling technique, called the wild scale-enhanced bootstrap (WiSE bootstrap), is utilized in this analysis and implemented using the WiSEBoot R package. This methodology is based in a partial linear model where the nonparametric component is approximated by a wavelet basis. The WiSE bootstrap provides a model selection (in the basis dimension) and consistent parameter estimates. Additionally, the document includes an overview of all of our research results involving the partial linear model, bootstrap, and wavelets.
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University of Minnesota Ph.D. dissertation. April 2016. Major: Statistics. Advisor: Snigdhansu Chatterjee. 1 computer file (PDF); xi, 233 pages.
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Heyman, Megan. (2016). Bootstrap Techniques in the Partial Linear Model. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/181739.
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