Hamed Rahimi
2024
Contextualized Topic Coherence Metrics
Hamed Rahimi
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David Mimno
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Jacob Hoover
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Hubert Naacke
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Camelia Constantin
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Bernd Amann
Findings of the Association for Computational Linguistics: EACL 2024
This article proposes a new family of LLM-based topic coherence metrics called Contextualized Topic Coherence (CTC) and inspired by standard human topic evaluation methods. CTC metrics simulate human-centered coherence evaluation while maintaining the efficiency of other automated methods. We compare the performance of our CTC metrics and five other baseline metrics on seven topic models and show that CTC metrics better reflect human judgment, particularly for topics extracted from short text collections by avoiding highly scored topics that are meaningless to humans.
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