K-means implementation for matrix A(n x m) that returns a vector of length n with values from 1 to k, depending on which cluster the vector ended in

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Arsen Driashkaba 2021-1-24

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https://ww2.mathworks.cn/matlabcentral/answers/725462-k-means-implementation-for-matrix-a-n-x-m-that-returns-a-vector-of-length-n-with-values-from-1-to-k

评论： Image Analyst 2021-1-24

Hi,

Sorry for bad english

Here is my task

I need to implement the function mykmeans (A, k), where the input wil be a matrix A with dimensions n x m, where n will be the number of vectors and m is the length of the flag vector. k will be the parameter of the k-means algorithm. The function returns a vector of length n in which the integer values will be 1 to k, depending on which cluster the vector ended in. I need to initialize the centroids so that they are in the areas where the input vectors are located.

Can someone hel me with this task?

Thank you

Best regards, Arsen

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Answer 1

KALYAN ACHARJYA 2021-1-24

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https://ww2.mathworks.cn/matlabcentral/answers/725462-k-means-implementation-for-matrix-a-n-x-m-that-returns-a-vector-of-length-n-with-values-from-1-to-k#answer_604942

编辑：KALYAN ACHARJYA 2021-1-24

kmeans MATLAB Function imsegkmeans

https://in.mathworks.com/help/images/ref/imsegkmeans.html

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Arsen Driashkaba 2021-1-24

Hi,

Thank you for your reply,

I need to implement my own function that returns a vector of lenght n with values from 1 to k.

if you have any ideas could you help me with this?

Best regards, Arsen

Image Analyst 2021-1-24

Are you saying that you're not allowed to use the built-in kmeans() function(s), or any code from anyone else either? And that you need to write your own kmeans function without any help from us or Mathworks? I believe you can probably find the algorithm in Wikipedia or elsewhere on the web.

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