Question #11
Reading: Reading 3 Machine Learning
PDF File: Reading 3 Machine Learning.pdf
Page: 4
Status: Unattempted
Correct Answer: B
Question
What is the appropriate remedy in the presence of excessive number of features in a data set?
Answer Choices:
A. Big data analysis
B. Dimension reduction
C. Unsupervised learning
Explanation
Big Data refers to very large data sets which may include both structured (e.g.
spreadsheet) data and unstructured (e.g. emails, text, or pictures) data and includes a
large number of features as well as number of observations. Dimension reduction seeks to
remove the noise (i.e., those attributes that do not contain much information) when the
number of features in a data set (its dimension) is excessive.