70-773 試験問題を無料オンラインアクセス

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You need to calculate a measure of central tendency and variability for the variables in a dataset that is grouped by using another categorical variable.
What should you use?

• A.the rxSummary function
• B.the summary function
• C.the rxCrossTabs function
• D.the ggplot2 package

DRAG DROP
You are using rxPredict for a logistic regression model.
You need to obtain prediction standard errors and confidence intervals.
Which R code segment should you use? To answer, drag the appropriate values to the correct targets. Each value may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
NOTE: Each correct selection is worth one point.

正解：

Explanation:

References: https://docs.microsoft.com/en-us/machine-learning-server/r/how-to-revoscaler-logistic-regression

You have an Apache Hadoop Hive data warehouse. RevoScalerR is not installed.
You need to sort the data according to the variables in the dataset.
What should you do?

• A.Execute a Hive query that sorts the data, and then reads the results.
• B.Connect to the database by using an ODBC connection, and then use the rxSort function.
• C.Connect to the database by using an ODBC connection, and then use the rxDataStep function.
• D.Create a table in the ORC file format.

You need to run a large data tree model by using rxDForest. The model must use cross validation.
Which rxDForest option should you use?

• A.xVal
• B.maxCompete
• C.maxDepth
• D.maxNumBins
• E.maxSurrogate

You are running a parallel function that uses the following R code segment. (Line numbers are included for reference only.)
0 1 cp <- 0.01 xval <- 0 maxdepth <- 5
0 2
0 3 (form, data = "segmentationDataBig", maxDepth = maxdepth, cp = cp, xval = xval, blocksPerRead = 250 You need to complete the R code. The solution must support chunking.
Which function should insert at line 02?

• A.rxExec
• B.rxBTrees
• C.rxDTree
• D.rxDForest