Results 31 to 40 of about 57,992 (261)
Selection of optimal auxiliary soil nutrient variables for Cokriging interpolation. [PDF]
PLoS ONE, 2014 In order to explore the selection of the best auxiliary variables (BAVs) when using the Cokriging method for soil attribute interpolation, this paper investigated the selection of BAVs from terrain parameters, soil trace elements, and soil nutrient ...
Genxin Song, Jing Zhang, Ke Wang
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On unfolded approach to off-shell supersymmetric models
Physics Letters B, 2023 We construct and analyze unfolded off-shell systems for chiral and vector supermultiplets using multispinor formalism and external currents. We find that auxiliary variables of multispinor formalism allow for the interesting reorganization of the ...
N.G. Misuna
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An Efficient General Family of Estimators for Population Mean in the Presence of Non-Response
Journal of Mathematical and Fundamental Sciences, 2017 This paper presents a new general family of estimators to estimate the population mean of study variable y in the presence of non-response when utilizing a known coefficient of variation of study variable y.
Thanapanang Rachokarn, Nuanpan Lawson
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Frontiers in Epidemiology, 2023 Epidemiological studies often have missing data, which are commonly handled by multiple imputation (MI). In MI, in addition to those required for the substantive analysis, imputation models often include other variables (“auxiliary variables”). Auxiliary
Elinor Curnow +9 more
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Auxiliary variable–enriched biomarker‐stratified design [PDF]
Statistics in Medicine, 2018 Clinical trials in the era of precision medicine require assessment of biomarkers to identify appropriate subgroups of patients for targeted therapy. In a biomarker‐stratified design (BSD), biomarkers are measured on all patients and used as stratification variables.
Ting Wang +4 more
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Multivariate Product Type of Estimator and Its Applications in Family Planning Programs [PDF]
المجلة المصرية للسکـان وتنظيم الأسرة, 2002 In this paper, a multivariate product type of estimator is suggested for positively correlated auxiliary variables in a finite population. This estimator is used for estimating the prevalence rate at a given value of socio-economic and family planning ...
Mounira’ Hussein
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Comparisons of Some Weighting Methods for Non-response Adjustment
Lithuanian Journal of Statistics, 2015 Sample and population auxiliary information have been demonstrated to be useful and yield approximately equal resultsin large samples. Several functional forms of weights are suggested in the literature.
Bernardo Jo˜ao Rota, Thomas Laitila
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Effective Auxiliary Variables via Structured Reencoding
CoRR, 2023 Extended resolution shows that auxiliary variables are very powerful in theory. However, attempts to exploit this potential in practice have had limited success. One reasonably effective method in this regard is bounded variable addition (BVA), which automatically reencodes formulas by introducing new variables and eliminating clauses, often ...
Andrew Haberlandt +2 more
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Multiple Auxiliary Variables in Nonresponse Adjustment
Sociological Methods & Research, 2011 Prior work has shown that effective survey nonresponse adjustment variables should be highly correlated with both the propensity to respond to a survey and the survey variables of interest. In practice, propensity models are often used for nonresponse adjustment with multiple auxiliary variables as predictors.
Kreuter, Frauke, Olson, Kristen
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Remote Sensing, 2019 Multisource forest inventory methods were developed to improve the precision of national forest inventory estimates. These methods rely on the combination of inventory data and auxiliary information correlated with forest attributes of interest. As these
Dinesh Babu Irulappa-Pillai-Vijayakumar +4 more
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