Clustering based on threshold values.

8 次查看（过去 30 天）
Silpa K
Silpa K 2020-2-4
评论： Silpa K 2020-2-5
I have a dataset ,attached here. I need to cluster the data based on some threshold value that chhosen randomly from the data set.How can I cluster a data based on a point or a set of points. Please help me.

请先登录，再回答此问题。

回答（3 个）

Hiro Yoshino
Hiro Yoshino 2020-2-4
Is this a question about how to classify the data based on threshold?
if condition
"classification description"
else
"classification description"
end
can be a solution.
Hiro Yoshino
Hiro Yoshino 2020-2-5
There are various methods available:https://jp.mathworks.com/discovery/cluster-analysis.html
  2 个评论
Silpa K
Silpa K 2020-2-5
Thank you sir.
My question is if I select some points from the dataset(suppose 2,1,0.2 etc). Based on this points how can I cluster. Cluster the different dense regions based on this points. Taking the points and cluster a point near to that point then we will get a cluster that contain 2 elements and clustering another point that near to the that cluster repeating this process.
How can do that please help me.
Hiro Yoshino
Hiro Yoshino 2020-2-5
Do you want to use fixed some points as centroids of the clusters?
OK, you've got an algorithm?
Then, is your question how to put the algorithm into practice in MATLAB?
Your algorithm sounds very straightfoward. It seems it is just a matter of how to write it in MATLAB. Am I right?
If so, you should start from basics: https://matlabacademy.mathworks.com/
MATLAB onramp is a good fit for you.

请先登录，再进行评论。

Silpa K
Silpa K 2020-2-5
Thank you sir.
Please give me a suggestion that which clustering technique can I use to fixed som epoints as centroids.
  2 个评论
Hiro Yoshino
Hiro Yoshino 2020-2-5
As far as I know, the centroids of clusters are determined by the corresponding clusters. So it is uncommon to fix the centroids before finding the clusters.
I suppose you can write by yourself. It sounds very easy.
Algorithm as follows:
  1. calculate the distances from all the centroids
  2. classify the data into the nearest cluster
  3. loop 1 and 2 till end
Silpa K
Silpa K 2020-2-5
Is there is any matlab code or technique available to cluster the nearest elements of the point.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Image Segmentation 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by