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[GConstruct] Limit the number of categories to 100 #1328

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[GConstruct] Limit the number of categories to 100 #1328

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jalencato Aug 25, 2025
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Merge branch 'main' into max_category
jalencato Aug 25, 2025
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6 changes: 5 additions & 1 deletion python/graphstorm/gconstruct/transform.py
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,7 @@

LABEL_STATS_FIELD = "training_label_stats"
LABEL_STATS_FREQUENCY_COUNT = "frequency_cnt"
MAX_CATEGORIES = 100

CLASSIFICATION_LABEL_STATS_TYPES = [LABEL_STATS_FREQUENCY_COUNT]

Expand Down Expand Up @@ -532,7 +533,10 @@ def update_info(self, info):
assert len(info) == 0
return

self._val_dict = {str(key): i for i, key in enumerate(np.unique(np.concatenate(info)))}
# Set the maximum categories number to avoid OOM on shared memory
self._val_dict = {str(key): min(i, MAX_CATEGORIES - 1)
for i, key in enumerate(np.unique(np.concatenate(info)))}

# We need to save the mapping in the config object.
if self._conf is not None:
self._conf['mapping'] = self._val_dict
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