5日前 -Description Provides extended data frames, with a special data frame column which contains two in- dexes, with potentially a nesting structure. License GPL (>= ...
2025/6/16 -For the linear model with constant error variance, the weight matrix is taken to be [Math Processing Error] W = I n , the order-[Math Processing Error] n ...
5日前 -A model matrix is a matrix, which is for R a vector with an attribute indicating the dimension, ie., the number of rows and of columns. dim(model.matrix(mod0)).
2025/7/1 -Many R functions accept a matrix as an argument, or return a matrix as the returned object. For example, the st_distance function returns a distance matrix ...
2025/6/23 -Matrix completion is the task of filling in the missing entries of a partially observed matrix, which is equivalent to performing data imputation in statistics.
6日前 -The LinearMixedModel type represents a linear mixed-effects model. Typically it is constructed from a Formula and an appropriate Table type, usually a ...
4日前 -Estimated model coefficients or estimated standard errors are provided in a matrix form, number of genes by number of parameters, on the log2 scale. The columns ...
2025/7/4 -Generalized RAS procedure. Takes an initial matrix, a target row sum vector and target colsum vector. Iterates until all row sums of matrix equal to target row ...
2025/7/5 -I would like to represent 3D vertices as part of a matrix, so I can perform matrix transformations on them and show the result for a Math project.
6日前 -Ridge regression does not perform variable selection, but instead keeps all variables in the model with reduced magnitude. x_train <- model.matrix(crim ~ ., ...