From 7318a09451852e3f7d5f68180964f03bd0b0f616 Mon Sep 17 00:00:00 2001 From: Jordan Gong Date: Mon, 1 Mar 2021 14:04:02 +0800 Subject: Change flat distance calculation method --- utils/triplet_loss.py | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'utils') diff --git a/utils/triplet_loss.py b/utils/triplet_loss.py index 6822cf6..e05b69d 100644 --- a/utils/triplet_loss.py +++ b/utils/triplet_loss.py @@ -20,8 +20,8 @@ class BatchTripletLoss(nn.Module): def forward(self, x, y): p, n, c = x.size() dist = self._batch_distance(x) - flat_dist = dist.tril(-1) - flat_dist = flat_dist[flat_dist != 0].view(p, -1) + flat_dist_mask = torch.tril_indices(n, n, offset=-1, device=dist.device) + flat_dist = dist[:, flat_dist_mask[0], flat_dist_mask[1]] if self.is_hard: positive_negative_dist = self._hard_distance(dist, y, p, n) @@ -102,6 +102,8 @@ class JointBatchTripletLoss(BatchTripletLoss): def forward(self, x, y): p, n, c = x.size() dist = self._batch_distance(x) + flat_dist_mask = torch.tril_indices(n, n, offset=-1, device=dist.device) + flat_dist = dist[:, flat_dist_mask[0], flat_dist_mask[1]] if self.is_hard: positive_negative_dist = self._hard_distance(dist, y, p, n) @@ -122,4 +124,4 @@ class JointBatchTripletLoss(BatchTripletLoss): else: # is_sum loss_metric = losses.sum(1) - return loss_metric, dist, non_zero_counts + return loss_metric, flat_dist, non_zero_counts -- cgit v1.2.3