Doubt in KNN quiz

#1

Please tell what exactly is noise, and how is the value of k dependent on noise in data in knn algorithm.

#2

hey @abhaygarg2001 ,
Noise is a bunch of your data that performs or exhibits trends differently from rest of your data.
As KNN calculates distance between the points to get the best cluster for them , so if these noise data points exist very far from the other data , then KNN algorithm while working on these data points will incorrectly calculate its center points and hence will degrade the overall performance.

I hope this would have helped you understand Noise.

Thank You and Happy Denoising :sweat_smile::slightly_smiling_face: .