refinement of document
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@ -19,6 +19,6 @@ orginal xgb.DMatrix object
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data(iris)
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data(iris)
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iris[,5] <- as.numeric(iris[,5])
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iris[,5] <- as.numeric(iris[,5])
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dtrain <- xgb.DMatrix(as.matrix(iris[,1:4]), label=iris[,5])
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dtrain <- xgb.DMatrix(as.matrix(iris[,1:4]), label=iris[,5])
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dsub <- slice(dtrain, c(1,2,3))
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dsub <- slice(dtrain, 1:3)
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}
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}
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@ -56,8 +56,8 @@ therefore it is more flexible than \code{\link{xgboost}}.
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\examples{
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\examples{
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data(iris)
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data(iris)
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iris[,5] <- as.numeric(iris[,5])
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iris[,5] <- as.numeric(iris[,5])
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dtrain = xgb.DMatrix(as.matrix(iris[,1:4]), label=iris[,5])
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dtrain <- xgb.DMatrix(as.matrix(iris[,1:4]), label=iris[,5])
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dtest = dtrain
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dtest <- dtrain
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watchlist <- list(eval = dtest, train = dtrain)
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watchlist <- list(eval = dtest, train = dtrain)
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param <- list(max_depth = 2, eta = 1, silent = 1)
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param <- list(max_depth = 2, eta = 1, silent = 1)
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logregobj <- function(preds, dtrain) {
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logregobj <- function(preds, dtrain) {
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