**2. Notations**

In the rest of this approach, we have used these notations:

D: is the concerned multi-label dataset.

N: is the size of multi-label dataset.

L: the set of labels.

Q: is the number of labels.

Y: is a set of labels, where Y is included in L with k = |Y|. It is known as k-label set.

*Y*: is the complementary set of Y.
