Error module

We can see error module architecture on figure A.4 on page . The interface makes ancestors to implement the following:

• $d$ = compute_distance( $\mathbf{\mu_1}$, $\mathbf{\mu_2}$)

where $\mathbf{\mu_1}, \mathbf{\mu_2}$ are feature vectors, $d$ is a real number. This module implements equation (3.1).

Figure A.4: Error Module