downsampled.py

# still using our separated classes fraud and not_fraud from above

# downsample majority
not_fraud_downsampled = resample(not_fraud,
                                replace = False, # sample without replacement
                                n_samples = len(fraud), # match minority n
                                random_state = 27) # reproducible results

# combine minority and downsampled majority
downsampled = pd.concat([not_fraud_downsampled, fraud])

# checking counts
downsampled.Class.value_counts()
    1    360
    0    360