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fix bug: random choice instead of mean #10

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fix bug: random choice instead of mean #10

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8 changes: 6 additions & 2 deletions examples/cluster_contrast_train_usl.py
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@
import collections
import time
from datetime import timedelta
import random

from sklearn.cluster import DBSCAN

Expand Down Expand Up @@ -171,16 +172,19 @@ def generate_cluster_features(labels, features):
continue
centers[labels[i]].append(features[i])

# centers = [
# torch.stack(centers[idx], dim=0).mean(0) for idx in sorted(centers.keys())
# ]
centers = [
torch.stack(centers[idx], dim=0).mean(0) for idx in sorted(centers.keys())
random.choice(torch.stack(centers[idx], dim=0)) for idx in sorted(centers.keys())
]

centers = torch.stack(centers, dim=0)
return centers

cluster_features = generate_cluster_features(pseudo_labels, features)

del cluster_loader, features

# Create hybrid memory
memory = ClusterMemory(model.module.num_features, num_cluster, temp=args.temp,
momentum=args.momentum, use_hard=args.use_hard).cuda()
Expand Down