D-DS-FN-23 Exam Question 31
In naïve Bayes implementations, how is the possibility of zero probabilities resulting from unobserved attribute/classifier pairs properly handled?
D-DS-FN-23 Exam Question 32
Consider these itemsets:
(hat, scarf, coat)
(hat, scarf, coat, gloves)
(hat, scarf, gloves)
(hat, gloves)
(scarf, coat, gloves)
What is the confidence of the rule (gloves -> hat)?
(hat, scarf, coat)
(hat, scarf, coat, gloves)
(hat, scarf, gloves)
(hat, gloves)
(scarf, coat, gloves)
What is the confidence of the rule (gloves -> hat)?
D-DS-FN-23 Exam Question 33
You have been assigned to do a study of the daily revenue effect of a pricing model of online transactions.
All the data currently available to you has been loaded into your analytics database; revenue data, pricing data, and online transaction data.
You find that all the data comes in different levels of granularity. The transaction data has timestamps (day, hour, minutes, seconds), pricing is stored at the daily level, and revenue data is only reported monthly.
What is your next step?
All the data currently available to you has been loaded into your analytics database; revenue data, pricing data, and online transaction data.
You find that all the data comes in different levels of granularity. The transaction data has timestamps (day, hour, minutes, seconds), pricing is stored at the daily level, and revenue data is only reported monthly.
What is your next step?
D-DS-FN-23 Exam Question 34
You submit a MapReduce job to a Hadoop cluster. Although the job was successfully submitted, you notice that it is not completing.
What should be done?
What should be done?
D-DS-FN-23 Exam Question 35
Review the following code:
SELECT pn, vn, sum(prc*qty) FROM sale
GROUP BY CUBE(pn, vn) ORDER BY 1, 2, 3;
Which combination of subtotals do you expect to be returned by the query?
SELECT pn, vn, sum(prc*qty) FROM sale
GROUP BY CUBE(pn, vn) ORDER BY 1, 2, 3;
Which combination of subtotals do you expect to be returned by the query?