How to remove extremly low variance features

User 5143 | 4/24/2016, 1:42:05 PM

i am getting WARNING: Detected extremely low variance for feature(s)

Comments

User 1174 | 4/25/2016, 5:31:28 PM

Hi,

It seems like one of your feature column(SArray) has extremely low variance which is not useful when you use the feature to create models.

To find out the variance of each column, which is an SArray, you can simply use the variance function.

` sf = gl.SFrame({'feature1":..., 'feature2':...})

feature1 variance

sf['feature1'].var() `