Data Science And Big Data Anlytics
QUESTION 1
The TFIDF (or TF-IDF) is a measure that considers both ______________ and ________________.
A.commonness of a term, the scarcity of the term
B.uncommoness of a term, the scarcity of the term
C.length of a term, the scarcity of the term
D.uncommoness of a term, the weakness of the term
5 points
QUESTION 2
The term __________ refers to a specific implementation of association rules mining that many companies use for a variety of purposes.
A.market research analysis
B.market prediction analysis
C.market competitive analysis
D.market basket analysis
5 points
QUESTION 3
A distribution over a fixed vocabulary of words is formally defined as..
A.subject
B.topic
C.story
D.text line
5 points
QUESTION 4
Your customer provided you with 3,000 unlabeled records and asked you to separate them into three groups. What is the correct analytical method to use?
A.K-means clustering
B.Naive Bayesian classification
C.Linear regression
D.Logistic regression
5 points
QUESTION 5
Time series analysis attempts to model the underlying structure of ________________taken over time.
A.observation
B.patterns
C.solution
D.facts
5 points
