Which specialized method(s) is (are) used in knowledge discovery and d

QUESTION

Which specialized method(s) is (are) used in knowledge discovery and data mining?

a. Stratified sampling
b. Conceptual analytic methods
c. Selection of the optimal subset of variables/features for use in modeling
d. Machine learning

ANSWER:

ANS: C
Knowledge discovery and data mining (KDDM) makes use of specialized analytic methods, characteristically machine learning, to identify patterns in a semi-automated fashion.