# Classifying points exactly on decision boundary

For calculating loss arose by classification we do this:

If $$y (w \cdot x + b) > 0$$: $$\text{no loss}$$

If $$y (w \cdot x + b) < 0$$: $$\text{loss} = −y (w \cdot x + b)$$

So here what about the points exactly on decision boundary? How do we classify and compute their loss? (since it would become 0)

If $$y (w \cdot x + b) > 0$$: $$\text{no loss}$$
If $$y (w \cdot x + b) \leq 0$$: $$\text{loss} = −y (w \cdot x + b)$$