The authors designed CALLIOPE, a top-down framework that uses LLMs to recursively partition documents into topic hierarchies.
Embedding-free framework enables private topic discovery in LLM conversations
CALLIOPE uses LLMs directly to abstract documents, synthesize schemas, and classify text, outperforming embedding-based methods under differential privacy.
Big Tech
Edith Cohen · Vadym Doroshenko · Badih Ghazi · Charlie Harrison · Pritish Kamath · Alexander Knop · +8 more
Google Research · Google DeepMind
Research Digest··3 min read
, LLM conversations) while supporting differential privacy.
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