How to implement KNN regression

Hi,

I have data as below:

X:
1
2
3
4
9
11
13
17
19
20

y:
0.1
0.3
0.4
0.65
1.5
2.5
2.7
2.9
3.2
3.6

I want to compute y values for at x values at 6.3, 15.5&21.5

1. for each value of x, I want to take 4 nearest points in my calculation and choose most reasonable one as the final y
2. In the second method, compare minkowski & chebychev distances and choose most reasonable one

Many thanks in advance,

Answer 1

[KSSV]

Read about fitcknn

[omar khater]

what is recommended max size of the dataset using this function?

I have a dataset of size 40000*8 and when I try to use it, it asks for a very large memory array. If this dataset is too large for it , is there other alternative function that more optimized?