Vous pouvez utiliser cette partie du code pour trouver les modèles qui utilisent as.matrix dans la fonction d'ajustement.
Attention, comme.matrix transforme une matrice clairsemée en une matrice pleine fusion. Vous pourriez rencontrer des problèmes de mémoire. Je n'ai pas testé si les modèles sous-jacents individuels acceptent une matrice clairsemée.
library(caret) # run on version 6.0-71
model_list <- getModelInfo()
df <- data.frame(models = names(model_list),
fit = rep("", length(model_list)),
stringsAsFactors = FALSE)
for (i in 1:length(model_list)) {
df$fit[i] <- as.expression(functionBody(model_list[[i]]$fit))
}
# find xgboost matrix
df$models[grep("xgb.DMatrix", df$fit)]
[1] "xgbLinear" "xgbTree"
# find all models where fit contains as.matrix(x)
df$models[grep("as.matrix\\(x\\)", df$fit)]
[1] "bdk" "binda" "blasso" "blassoAveraged" "bridge" "brnn"
[7] "dnn" "dwdLinear" "dwdPoly" "dwdRadial" "enet" "enpls.fs"
[13] "enpls" "foba" "gaussprLinear" "gaussprPoly" "gaussprRadial" "glmnet"
[19] "knn" "lars" "lars2" "lasso" "logicBag" "LogitBoost"
[25] "lssvmLinear" "lssvmPoly" "lssvmRadial" "mlpSGD" "nnls" "ordinalNet"
[31] "ORFlog" "ORFpls" "ORFridge" "ORFsvm" "ownn" "PenalizedLDA"
[37] "ppr" "qrnn" "randomGLM" "relaxo" "ridge" "rocc"
[43] "rqlasso" "rqnc" "rvmLinear" "rvmPoly" "rvmRadial" "sda"
[49] "sddaLDA" "sddaQDA" "sdwd" "snn" "spikeslab" "svmLinear"
[55] "svmLinear2" "svmLinear3" "svmLinearWeights" "svmLinearWeights2" "svmPoly" "svmRadial"
[61] "svmRadialCost" "svmRadialSigma" "svmRadialWeights" "xgbLinear" "xgbTree" "xyf"
Merci. Cela répond à ma question. Mais l'utilisation de as.matrix défait le but de l'utilisation de la matrice sparse. –