CosineSimilarityLoss

class mmpretrain.models.losses.CosineSimilarityLoss(shift_factor=0.0, scale_factor=1.0)

Cosine similarity loss function.

Compute the similarity between two features and optimize that similarity as loss.

Parameters:

• shift_factor (float) – The shift factor of cosine similarity. Default: 0.0.

• scale_factor (float) – The scale factor of cosine similarity. Default: 1.0.

forward(pred, target, mask=None)

Forward function of cosine similarity loss.

Parameters:

• pred (torch.Tensor) – The predicted features.

• target (torch.Tensor) – The target features.

Returns:

The cosine similarity loss.

Return type:

torch.Tensor