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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 03908nam a2200457 4500 | |
| 001 | oai:DiVA.org:umu-39614 | |
| 003 | SwePub | |
| 008 | 110202s2011 | |||||||||||000 ||eng| | |
| 020 | a 9789174591477q print | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-396142 URI |
| 040 | a (SwePub)umu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a vet2 swepub-contenttype |
| 072 | 7 | a dok2 swepub-publicationtype |
| 100 | 1 | a Häggström, Jenny,d 1980-u Umeå universitet,Statistiska institutionen4 aut0 (Swepub:umu)jeyhom02 |
| 245 | 1 0 | a Selection of smoothing parameters with application in causal inference |
| 264 | 1 | a Umeå :b Statistiska institutionen, Umeå universitet,c 2011 |
| 300 | a 27 s. | |
| 338 | a electronic2 rdacarrier | |
| 490 | 0 | a Statistical studies,x 1100-8989 ;v 44 |
| 520 | a This thesis is a contribution to the research area concerned with selection of smoothing parameters in the framework of nonparametric and semiparametric regression. Selection of smoothing parameters is one of the most important issues in this framework and the choice can heavily influence subsequent results. A nonparametric or semiparametric approach is often desirable when large datasets are available since this allow us to make fewer and weaker assumptions as opposed to what is needed in a parametric approach. In the first paper we consider smoothing parameter selection in nonparametric regression when the purpose is to accurately predict future or unobserved data. We study the use of accumulated prediction errors and make comparisons to leave-one-out cross-validation which is widely used by practitioners. In the second paper a general semiparametric additive model is considered and the focus is on selection of smoothing parameters when optimal estimation of some specific parameter is of interest. We introduce a double smoothing estimator of a mean squared error and propose to select smoothing parameters by minimizing this estimator. Our approach is compared with existing methods.The third paper is concerned with the selection of smoothing parameters optimal for estimating average treatment effects defined within the potential outcome framework. For this estimation problem we propose double smoothing methods similar to the method proposed in the second paper. Theoretical properties of the proposed methods are derived and comparisons with existing methods are made by simulations.In the last paper we apply our results from the third paper by using a double smoothing method for selecting smoothing parameters when estimating average treatment effects on the treated. We estimate the effect on BMI of divorcing in middle age. Rich data on socioeconomic conditions, health and lifestyle from Swedish longitudinal registers is used. | |
| 650 | 7 | a NATURVETENSKAPx Matematikx Sannolikhetsteori och statistik0 (SwePub)101062 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Mathematicsx Probability Theory and Statistics0 (SwePub)101062 hsv//eng |
| 653 | a Smoothing parameter selection | |
| 653 | a Nonparametric regression | |
| 653 | a Semiparametric additive model | |
| 653 | a Double smoothing | |
| 653 | a Causal inference | |
| 653 | a BMI | |
| 653 | a Divorce | |
| 653 | a Statistics | |
| 653 | a Statistik | |
| 653 | a Statistics | |
| 653 | a statistik | |
| 700 | 1 | a de Luna, Xavier,c Professoru Umeå universitet,Statistiska institutionen4 ths0 (Swepub:umu)xade0001 |
| 700 | 1 | a Wiberg, Marie,c PhDu Umeå universitet,Statistiska institutionen4 ths0 (Swepub:umu)maewig95 |
| 700 | 1 | a Ma, Yanyuan,c Associate Professoru Texas A&M University, Department of Statistics4 opn |
| 710 | 2 | a Umeå universitetb Statistiska institutionen4 org |
| 856 | 4 | u https://umu.diva-portal.org/smash/get/diva2:394410/FULLTEXT01.pdfx primaryx Raw objecty fulltext |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-39614 |
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