Ch3 Knn Classification

Question 1

nearest neighbor what is it

Answer 1

classifiers are defined by their characteristic
of classifying unlabeled examples by assigning them the class of similar labeled
examples.

Question 2

Dependent events

Answer 2

If all events were independent, it would be impossible to predict one event by
observing another. In other words, dependent events are the basis of predictive
modeling. Just as the presence of clouds is predictive of a rainy day, the appearance
of the word Viagra is predictive of a spam e-mail.
Calculating

Question 3

Cluster

Answer 3

– a collection of objects that are similar to one another
within the same cluster and are dissimilar to the objects in other
clusters