K-Nearest Neighbor OveRsampling approach (KNNOR)

K-Nearest Neighbor OveRsampling approach (KNNOR)

Usage

knnor(dataset, k, aug_num, cycles_number_limit = 100L)

Arguments

dataset

list containing the following fields:

• embeddings: an 2-D array (matrix) with size batch x times*features

• labels: an 1-D array (vector) of integers with batch elements

k

unsigned integer number of nearest neighbors

aug_num

unsigned integer number of datapoints to be augmented

cycles_number_limit

unsigned integer number of maximum try cycles

Value

Returns artificial points (2-D array (matrix) with size aug_numxtimes*features`)

References

Islam, A., Belhaouari, S. B., Rehman, A. U. & Bensmail, H. (2022). KNNOR: An oversampling technique for imbalanced datasets. Applied Soft Computing, 115, 108288. https://doi.org/10.1016/j.asoc.2021.108288