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Local influence ana...
Local influence analysis in 2 X 2 cross-over designs
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- Hao, Chengcheng (författare)
- Stockholms universitet,Statistiska institutionen
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- von Rosen, Tatjana (författare)
- Stockholms universitet,Statistiska institutionen
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- Von Rosen, Dietrich (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för energi och teknik,Department of Energy and Technology,Linköping University
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(creator_code:org_t)
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- Stockholm : Department of Statistics, Stockholm University, 2011
- Engelska 24 s.
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Serie: Research Report / Department of Statistics, Stockholm University, 0280-7564 ; 2011: 1
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Abstract
Ämnesord
Stäng
- The aim of this work is to develop new methodology to detect influential observations in cross-over design models with random individual effects. Various case-weighted perturbations are performed. We derive the exact solution of influence of the perturbations on each parameter estimate and their dispersion matrix. Closed-form maximum likelihood estimates (MLEs) of variance parameters as well as fixed effect parameters in the cross-over design models are utilised. The work exhibits the possibility to produce closed-form expressions of the influence using the residuals in mixed models. A discussion on restrictions of the case-weighted perturbation schemes is given. Some graphical tools are also presented.
Ämnesord
- NATURVETENSKAP -- Matematik -- Sannolikhetsteori och statistik (hsv//swe)
- NATURAL SCIENCES -- Mathematics -- Probability Theory and Statistics (hsv//eng)
Nyckelord
- Cross-over design modelling
- Explicit maximum likelihood estimate
- Influential observation
- Mixed linear model
- Perturbation scheme
- Statistical diagnostics
- statistik
- Statistics
Publikations- och innehållstyp
- vet (ämneskategori)
- rap (ämneskategori)