Que.Which of the following function is a wrapper for different lattice plots to visualize the data?
|
| a. levelplot |
| b. featurePlot |
| c. plotsample |
| d. none of the mentioned |
Que.Point out the wrong statement.
|
| a. In every situation, the data generating mechanism can create predictors that only have a single unique value |
| b. Predictors might have only a handful of unique values that occur with very low frequencies |
| c. The function findLinearCombos uses the QR decomposition of a matrix to enumerate sets of linear combinations |
| d. All of the mentioned |
In every situation, the data generating mechanism can create predictors that only have a single unique value
Que.Which of the following function can be used to identify near zero-variance variables?
|
| a. zeroVar |
| b. nearVar |
| c. nearZeroVar |
| d. all of the mentioned |
Que.Which of the following function can be used to flag predictors for removal?
|
| a. searchCorrelation |
| b. findCausation |
| c. findCorrelation |
| d. none of the mentioned |
Que.Point out the correct statement.
|
| a. findLinearColumns will also return a vector of column positions can be removed to eliminate the linear dependencies |
| b. findLinearCombos will return a list that enumerates dependencies |
| c. the function findLinearRows can be used to generate a complete set of row variables from one factor |
| d. none of the mentioned |
findLinearCombos will return a list that enumerates dependencies
Que.Which of the following can be used to impute data sets based only on information in the training set?
|
| a. postProcess |
| b. preProcess |
| c. process |
| d. all of the mentioned |
Que.The function preProcess estimates the required parameters for each operation.
|
| a. True |
| b. False |
| c. May be True or False |
| d. Can’t say |
Que.Which of the following can also be used to find new variables that are linear combinations of the original set with independent components?
|
| a. ICA |
| b. SCA |
| c. PCA |
| d. None of the mentioned |
Que.Which of the following function is used to generate the class distances?
|
| a. preprocess.classDist |
| b. predict.classDist |
| c. predict.classDistance |
| d. all of the mentioned |
Que.The preProcess class can be used for many operations on predictors.
|
| a. True |
| b. False |
| c. May be True or False |
| d. Can’t say |