Which process in text analysis can be used to reduce dimensionality?

A. Stemming

B. Parsing

C. Digitizing

D. Sorting

You submit a MapReduce job to a Hadoop cluster. However, you notice that although the job was

successfully submitted, it is not completing.

What should be done to identify the issue?

A. Ensure TaskTracker is running

B. Ensure JobTracker is running

C. Ensure NameNode is running

D. Ensure DataNode is running

When is a Na飗e Bayesian Classifier model for classification preferred versus a Logistic Regression model?

A. When using several categorical input variables with over 1000 possible values each

B. When an estimate of the probability of an outcome is needed, not just which class it is in

C. When all input variables are numerical

D. When some of the input variables might be correlated

You are using k-means clustering to classify heart patients for a hospital. You have chosen Patient Sex, Height, Weight, Age and Income as measures and have used 3 clusters. When you create a pair-wise plot of the clusters, you notice that there is significant overlap between the clusters. What should you do?

A. Identify additional measures to add to the analysis

B. Remove one of the measures

C. Decrease the number of clusters

D. Increase the number of clusters

Refer to the exhibit.

The exhibit shows four graphs labeled as Fig A thorough Fig D. Which figure represents the entropy function relative to a Boolean classification and is represented by the formula shown in Exhibit?

A. Fig-A

B. Fig-B

C. Fig-C

D. Fig-D