K-Nearest Neighbors "for loop"


I know I need to create a for loop in the second problem of the homework to prevent myself from going through the tedious process of
calculating 49 distances by hand, however, I am having a significant amount of trouble figuring out how to get the loop code started.

Any advice on how to start the loop?



Answers and follow-up questions

Answer or follow-up question 1

Dear Russ,

This should get you started:

You want a nested loop. The outer loop iterates over the new instances,
and the inner loop iterates over the training instances and computes the
distance for the current new instance.

For advances R users: you can simply vectorize the inner loop.

Mchel Ballings

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