Sentence examples for procedure of imputation from inspiring English sources

For the validation in the TARN dataset, we did multiple imputations to substitute the missing values of the predictors included in the prognostic model by using the procedure of imputation by chained equations in Stata Release 11.

In the final survey, the participation rate was 97.4%, with data saturation of 98.6%; this helped to limit the use of procedures for imputation of missing data, which is always problematic.

The choice of imputation procedure for the < 5% of samples below LOD is not expected to impact our findings.

theorem 2 Let missing Y be imputed from their posterior predictive distributions using the regression imputation procedure of Schenker and Welsh (1988) (p. 1560) with imputation model (4) and improper prior density for proportional toσ−2ε.

A full account of imputation procedures has been documented elsewhere [ 13].

We have shown that implementations of imputation procedures for categorical variables can go seriously wrong if perfect prediction occurs.

As multiplexed GBS, which trades sequencing depth (and therefore genotyping costs) for uncertainty in genotype calling and imputation, is increasingly used for association mapping (Poland and Rife 2012), this type of imputation procedures in a MI context should be particularly useful in species where no or only part of a reference genome is available, like wheat or switchgrass.

It is also worth noting that we applied a multiple imputation procedure to impute the missing values of each covariate.

We conducted 10 imputations using the MCMC (Markov chain Monte Carlo) method (= a single chain for all imputations with 200 burn-in iterations followed by 100 iterations between successive imputations) stratified for the five influenza years, using the multiple imputation procedure of SAS (version 9.2).

Repeating the same MaCH-Admix imputation procedure of chromosome 22, (1) the NTR and GENR pre-combined sample was cross-platform imputed for all autosomal chromosomes and subsequently an "imputed" GRM was made; (2) the NTR and GENR samples were imputed independently for all autosomal chromosomes, post-combined and an "imputed independently" GRM was built.

Using the imputation approach outlined in this paper, which was specifically designed to impute genotypes on sex chromosomes, did not always outperform the standard autosomal imputation procedure of AlphaImpute.