HIGHLIGHTS
- who: Julio G. Velazco from the Biometris, Wageningen University and Research, , AA Wageningen, The Netherlands have published the article: Modelling spatial trends in sorghum breeding field trials using a two-dimensional P-spline mixed model, in the Journal: (JOURNAL)
- what: The effective dimension of a model is computed as the trace of the hat matrix H. If the authors focus on the spatial part of the SpATS model , the authors have that u2322 fu0303 (r, c)=ud835udc17s ud835udf37 s + ud835udc19s su0303=ud835udc07ud835udefd y + ud835udc07s y, where Hu03b2 is hat matrix of the fixed component with . . .
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