def test_glvq_loss_int_labels(self):
d = torch.stack([torch.ones(100), torch.zeros(100)], dim=1)
labels = torch.tensor([0, 1])
targets = torch.ones(100)
batch_loss = losses.glvq_loss(distances=d,
target_labels=targets,
prototype_labels=labels)
loss_value = torch.sum(batch_loss, dim=0)
self.assertEqual(loss_value, -100)
def test_glvq_loss_one_hot_unequal(self):
dlist = [torch.ones(100), torch.zeros(100), torch.zeros(100)]
d = torch.stack(dlist, dim=1)
labels = torch.tensor([[0, 1], [1, 0], [1, 0]])
wl = torch.tensor([1, 0])
targets = torch.stack([wl for _ in range(100)], dim=0)
batch_loss = losses.glvq_loss(distances=d,
target_labels=targets,
prototype_labels=labels)
loss_value = torch.sum(batch_loss, dim=0)
self.assertEqual(loss_value, -100)
def forward(self, outputs, targets):
distances, plabels = outputs
mu = glvq_loss(distances, targets, prototype_labels=plabels)
batch_loss = self.squashing(mu + self.margin, beta=self.beta)
return torch.sum(batch_loss, dim=0)