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  • Search: subject:"Detection limit"
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Detection limit 3 EM algorithm 2 Kriging 2 Accelerated failure time model 1 Annealing simulation 1 Balances 1 Censored predictor 1 Complete case 1 Cross-validation 1 Joint model 1 Left-censoring 1 Log-ratio transformations 1 Logistic regression 1 Minimum detection limit 1 Multiple imputation 1 Multiple longitudinal covariates 1 Normal approximation 1 Prediction 1 Robust regression 1 Seminonparametric distribution 1 Spatial process 1 Values below detection limit 1 Variogram and histogram fitting 1
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Undetermined 5
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Article 5
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Bernhardt, Paul W. 2 Wang, Huixia Judy 2 Zhang, Daowen 2 Atkinson, P. 1 Barca, E. 1 Filzmoser, P. 1 Hron, K. 1 Martín-Fernández, J.A. 1 Palarea-Albaladejo, J. 1 Passarella, G. 1 Schelin, Lina 1 Sedda, L. 1 Sjöstedt-de Luna, Sara 1 Templ, M. 1
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Computational Statistics & Data Analysis 4 Journal of Geographical Systems 1
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RePEc 5
Showing 1 - 5 of 5
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A fast EM algorithm for fitting joint models of a binary response and multiple longitudinal covariates subject to detection limits
Bernhardt, Paul W.; Zhang, Daowen; Wang, Huixia Judy - In: Computational Statistics & Data Analysis 85 (2015) C, pp. 37-53
Joint modeling techniques have become a popular strategy for studying the association between a response and one or more longitudinal covariates. Motivated by the GenIMS study, where it is of interest to model the event of survival using censored longitudinal biomarkers, a joint model is...
Persistent link: https://www.econbiz.de/10011191014
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Flexible modeling of survival data with covariates subject to detection limits via multiple imputation
Bernhardt, Paul W.; Wang, Huixia Judy; Zhang, Daowen - In: Computational Statistics & Data Analysis 69 (2014) C, pp. 81-91
Models for survival data generally assume that covariates are fully observed. However, in medical studies it is not uncommon for biomarkers to be censored at known detection limits. A computationally-efficient multiple imputation procedure for modeling survival data with covariates subject to...
Persistent link: https://www.econbiz.de/10010871308
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Spatial prediction in the presence of left-censoring
Schelin, Lina; Sjöstedt-de Luna, Sara - In: Computational Statistics & Data Analysis 74 (2014) C, pp. 125-141
minimum detection limit (MDL) of the instruments used to quantify them. Several methods to predict the variables at new …
Persistent link: https://www.econbiz.de/10011056530
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Imputing censored data with desirable spatial covariance function properties using simulated annealing
Sedda, L.; Atkinson, P.; Barca, E.; Passarella, G. - In: Journal of Geographical Systems 14 (2012) 3, pp. 265-282
Persistent link: https://www.econbiz.de/10010867934
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Model-based replacement of rounded zeros in compositional data: Classical and robust approaches
Martín-Fernández, J.A.; Hron, K.; Templ, M.; Filzmoser, P. - In: Computational Statistics & Data Analysis 56 (2012) 9, pp. 2688-2704
data. These techniques may be used for the estimation of rounded zeros or values below the detection limit in cases when …
Persistent link: https://www.econbiz.de/10011056547
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