[R] k-nearest neighbour classification

Adams, Jean jvadams at usgs.gov
Tue Oct 13 23:26:31 CEST 2015


Ah, I see what you're after.  I don't know of a built in function to search
for the best number of nearest neighbors.  You may have to run the code for
each k separately, then compare the resulting errors.

Jean

On Tue, Oct 13, 2015 at 9:13 AM, Neverstop <neverstop at hotmail.it> wrote:

> I know that knn.cv(train=predictors.training, cl=classes.training, k=3,
> prob=TRUE) works but by doing so I fix the tuning paramer k to be 3. Isn't
> cross validation a technique to choose the optimal tuning parameter trying
> a
> range of different values for the tuning parameter?
>
>
>
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