How to fix: No samples will be generated with the provided ratio settings. (imblearn)

Question

I have this code:

from imblearn.over_sampling import ADASYN

Y = df.target
X = df.drop('target', axis=1)

ad = ADASYN()
X_adasyn, y_adasyn = ad.fit_sample(X, Y)

getting this error:

ValueError: No samples will be generated with the provided ratio 
settings.

Valgus

There is a issue with their function and its default parameters it seems. The ADAYSN function with default parameters itself is not working. – Fideicommissum

Did you manage to fix this problem? I am having the same issue – Synesthesia

Yeah, me too. What's the solution? – Dismissal

I obtained this error when I accidentally ran ADASYN on a dataset that was already balanced. – Latricelatricia

What's the solution? – Doglike

Answer 1

Make it a two. There is github and it explicitly says:

if not np.sum(n_samples_generate):
                raise ValueError("No samples will be generated with the"
                                 " provided ratio settings.")

but, yeah......#

Coagulase

Can you provide what exactly you are trying to explain here – Lupelupee

Answer 2

I had this problem too, finally i solved it!

1. you should use sampling_strategy instead of ratio
2. sampling_strategy='minority'

I tried other options such as 'not_majority' ,'auto' and dictionary form, all of them gave the following error

Value Error: No samples will be generated with the provided ratio settings

but 'minority' worked.

Campuzano