[lecture9][0521] KNN, an equal number of samples for each class label

[jeonghyunpark2002]

Hi, professor! I have a question about K-nearest neigbor classifier.

When k = 4, the number of blue label and red label sample is same, as 2.

Then, what is the output of this classifier? Or, how we classify in this case? Is there any additional criteria to determine?

Thank you!

[yjyoo3312]

@jeonghyunpark2002

Thank you for raising that good point! In this case, determining the output results can be very challenging. To avoid this issue, we typically choose an odd number for K, such as 1, 3, or 5.

[jeonghyunpark2002]

@yjyoo3312

Thank you for fast response and a tip to resolve this issue!