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Update topic mapping when all documents match zero-shot topics #2451

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Update topic mapping when all documents match zero-shot topics #2451

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Update topic mapping when all documents match zero-shot topics
huisman Oct 29, 2025
4a3b74a
Fix extra space before comment
huisman Oct 29, 2025
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13 changes: 13 additions & 0 deletions bertopic/_bertopic.py
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Original file line number Diff line number Diff line change
Expand Up @@ -494,6 +494,19 @@ def fit_transform(
documents, embeddings, assigned_documents, assigned_embeddings
)
else:
# Update topic id to zeroshot topic id mapping
self._topic_id_to_zeroshot_topic_idx = {
new_topic_id: zeroshot_topic_id
for new_topic_id, zeroshot_topic_id in enumerate(set(assigned_documents.Topic))
}

# All documents matches zero-shot topics
documents = assigned_documents
embeddings = assigned_embeddings

# Update topic sizes
self._update_topic_size(documents)

# All documents matches zero-shot topics
documents = assigned_documents
embeddings = assigned_embeddings
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