DSCI Exam 2 Questions With All Complete And Verified Solutions Graded A+.
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Course
DSCI
Institution
DSCI
In the opening vignette, the architectural system that supported Watson used all the following elements EXCEPT - correct answer a core engine that could operate seamlessly in another domain without changes.
In text mining, tokenizing is the process of - corre...
In the opening vignette, the architectural system that supported Watson used all the following elements
EXCEPT - correct answer a core engine that could operate seamlessly in another
domain without changes.
In text mining, tokenizing is the process of - correct answer categorizing a block of
text in a sentence.
In sentiment analysis, sentiment suggests a transient, temporary opinion reflective of one's feelings. -
correct answer FALSE (Settled opinion)
Companies understand that when their product goes "viral," the content of the online conversations
about their product does not matter, only the volume of conversations. - correct answer
FALSE
What are the two main types of Web analytics? - correct answer off-site and on-site
Web analytics
In text analysis, what is a lexicon? - correct answer a catalog of words, their
synonyms, and their meanings
Understanding which keywords your users enter to reach your Web site through a search engine can
help you understand - correct answer how well visitors understand your products.
Articles and auxiliary verbs are assigned little value in text mining and are usually filtered out. - correct
answer TRUE
Web-based media has nearly identical cost and scale structures as traditional media. - correct answer
FALSE (Web is cheaper)
, In the research literature case study, the researchers analyzing academic papers extracted information
from which source? - correct answer the paper abstract
Data mining requires specialized data analysts to ask ad hoc questions and obtain answers quickly from
the system. - correct answer False
Open-source data mining tools include applications such as IBM SPSS Modeler and Dell Statistica. -
correct answer False
All of the following statements about data mining are true EXCEPT: - correct answer
The ideas behind it are relatively new.
Third party providers of publicly available data sets protect the anonymity of the individuals in the data
set primarily by - correct answer removing identifiers such as names and social
security numbers.
Data mining can be very useful in detecting patterns such as credit card fraud, but is of little help in
improving sales. - correct answer False
During classification in data mining, a false positive is an occurrence classified as true by the algorithm
while being false in reality. - correct answer True
Which broad area of data mining applications analyzes data, forming rules to distinguish between
defined classes? - correct answer Classification
Identifying and preventing incorrect claim payments and fraudulent activities falls under which type of
data mining applications? - correct answer Insurance
In estimating the accuracy of data mining (or other) classification models, the true positive rate is -
correct answer the ratio of correctly classified positives divided by the total positive
count.
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