Choose optimal value of k

#1

can you please tell me how to choose optimal value of k?
and can we do data preprocessing on MNIST dataset for better results like normalization ,removal of null value/outliers etc.?

#2

hey @anuj_singla8 ,
for choosing the correct value of K. There is no such rule or something that works every time , its depends a lot on the data. Hence , you need to try different values and use the work the best on it.

yes you can do processing , but it might effect the working of the model. So , choose accordingly what preprocessing to be made.