Does fscmrmr function stop after 49 features?

2 次查看（过去 30 天）
Aryan Safakish
Aryan Safakish 2020-9-22
回答： Gouri Chennuru 2020-9-26
Hi all,
I'm trying to use the fscmrmr function to reduce the number of features from +600 down to about 180. I used the fscmrmr function and had a couple of problems.
  • in either case, the indx returns only 49 features. After the 49th feature, it just lists the remaining features in numerical order. When looking at the scores, I see that after the 49th feature, the scores drop to 0.
  • depending on if I use a table or if I use a matrix, I'm also getting different answers, which I find very weird. Why would the format matter?

请先登录，再回答此问题。

回答（2 个）

Aryan Safakish
Aryan Safakish 2020-9-25
Here is the attached data. Thanks for your assistance
Gouri Chennuru
Gouri Chennuru 2020-9-26
Hi Aryan,
The fscmrmr function computes the mutual information values for both categorical (discrete) and continuous variables. fscmrmr discretizes a continuous variable into 256 bins or the number of unique values in the variable if it is less than 256. The function finds optimal bivariate bins for each pair of variables using the adaptive algorithm
You can refer to these links in order to resolve the issue.
https://www.mathworks.com/help/stats/fscmrmr.html#mw_b2ff44e4-6244-46f1-9348-35ee0615b91b
https://www.mathworks.com/help/stats/fscmrmr.html#namevaluepairs

类别

在 Help Center 和 File Exchange 中查找有关 Design of Experiments (DOE) 的更多信息

标签

产品

Community Treasure Hunt

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

Start Hunting!

Translated by