DATABASE FUNDAMENTALS
DATA WAREHOUSING AND DATA MINING
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
class label is known
|
|
|
class label is unknown
|
|
|
Either A or B
|
|
|
None of the above
|
Detailed explanation-1: -Cluster labeling can be done indirectly using external knowledge such as pre-categorized knowledge such as the one of Wikipedia. In such methods, a set of important cluster text features are first extracted from the cluster documents.
Detailed explanation-2: -Clustering is an unsupervised machine learning task. You might also hear this referred to as cluster analysis because of the way this method works. Using a clustering algorithm means you’re going to give the algorithm a lot of input data with no labels and let it find any groupings in the data it can.
Detailed explanation-3: -Expert-Verified Answer Cluster analysis is the use of a mathematical model to discover groups of similar customers based on finding the smallest variations among customers within each group.
Detailed explanation-4: -All Answers (11) Generally speaking-YES, it is good approach.