gs gs120 Machine Learning - Caret - Quiz No.2
gs gs120 Data Structure Quiz
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Question 1: Which of the following function is a wrapper for different lattice plots to visualize the data?
levelplot
featurePlot
plotsample
none of the mentioned
Question 2: Point out the wrong statement.
In every situation, the data generating mechanism can create predictors that only have a single unique value
Predictors might have only a handful of unique values that occur with very low frequencies
The function findLinearCombos uses the QR decomposition of a matrix to enumerate sets of linear combinations
All of the mentioned
Question 3: Which of the following function can be used to identify near zero-variance variables?
zeroVar
nearVar
nearZeroVar
all of the mentioned
Question 4: Which of the following function can be used to flag predictors for removal?
searchCorrelation
findCausation
findCorrelation
none of the mentioned
Question 5: Point out the correct statement.
findLinearColumns will also return a vector of column positions can be removed to eliminate the linear dependencies
findLinearCombos will return a list that enumerates dependencies
the function findLinearRows can be used to generate a complete set of row variables from one factor
none of the mentioned
Question 6: Which of the following can be used to impute data sets based only on information in the training set?
postProcess
preProcess
process
all of the mentioned
Question 9: Which of the following function is used to generate the class distances?
preprocess.classDist
predict.classDist
predict.classDistance
all of the mentioned
