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.

There is a issue with their function and its default parameters it seems. The ADAYSN function with default parameters itself is not working. — heisenbug47, Oct 11 '19 at 09:24
Did you manage to fix this problem? I am having the same issue — codiearcher, Nov 26 '19 at 13:34
I obtained this error when I accidentally ran ADASYN on a dataset that was already balanced. — kathryn, Apr 05 '20 at 14:44

score 6 · Answer 1 · edited May 12 '20 at 05:43

6

I had this problem too, finally i solved it!

you should use sampling_strategy instead of ratio
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.

edited May 12 '20 at 05:43

Simon.S.A.

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answered May 11 '20 at 16:29

Mahsa Ghaderan

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score 2 · Accepted Answer · answered May 31 '19 at 13:02

2

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......#

answered May 31 '19 at 13:02

Noah Weber

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Can you provide what exactly you are trying to explain here – DaniyalAhmadSE Jan 25 '23 at 08:34

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

2 Answers2