How to implement KNN regression

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Mekala balaji 2017-8-19

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/353312-how-to-implement-knn-regression

评论： omar khater 2019-7-25

采纳的回答： KSSV

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Hi,

I have data as below:

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,

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Answer 1

KSSV 2017-8-19

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https://ww2.mathworks.cn/matlabcentral/answers/353312-how-to-implement-knn-regression#answer_278532

Read about fitcknn

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omar khater 2019-7-25

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?

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