Which of the following is true of the value of k in the k-Nearest Neighbors algorithm?
A) The value of k is always taken as a constant and is equal to 1.
B) If the value of k is large, it drastically increases variability.
C) If the value k is very large, it introduces biases into the classification decisions.
D) If the value k is large, the classification of a record is very sensitive to the classification of the single record to which it is closest.

Question

Quizplus · Accepted Answer

If the value of k is very large, it introduces biases into the classification decisions. A larger k means that the classification is based on a larger number of neighboring records, which can lead to biased classification decisions. Option A is incorrect as k is not always taken as a constant and can be varied. Option B is incorrect as increasing k may decrease variability by smoothing out local fluctuations. Option D is also incorrect as a larger k would result in the classification being less sensitive to the classification of a single record.

Which of the Following Is True of the Value of K