Pure farming 2018 controls missing12/6/2023 The three methods are assessed and compared in a simulation study, using a complete set of real data in which values are deleted randomly at different rates. In the present paper we provide two extensions to this methodology, by including weights chosen by cross-validation and allowing multiple as well as simple imputation. (2010) we outlined a method of data imputation to estimate the missing values, the computational algorithm for which was a mixture of regression and lower-rank approximation of a matrix based on its singular value decomposition (SVD). A common problem in multi-environment trials arises when some genotypeby- environment combinations are missing.
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