`evaluator.evaluate` uses only single sample

[enkeejunior1]

Hi, and thank you for your awesome repository!

I recently tried using this library to validate some attribution methods, specifically by utilizing evaluator.evaluate.

However, I discovered that it only uses an attribution map from a single sample. link

        attrA = self.gt_feature_importances.detach().numpy().reshape(1, -1)
        attrB = self.explanation_x_f.detach().numpy().reshape(1, -1)

Is this behavior expected? The comment mentions evaluator.evaluate using n x m samples, so I am confused.