Large Language Models Struggle to Describe the Haystack without Human Help: Human-in-the-loop Evaluation of Topic Models

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Hauptverfasser: Li, Zongxia, Calvo-Bartolomé, Lorena, Hoyle, Alexander, Xu, Paiheng, Dima, Alden, Fung, Juan Francisco, Boyd-Graber, Jordan
Format: Preprint
Veröffentlicht: 2025
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author Li, Zongxia
Calvo-Bartolomé, Lorena
Hoyle, Alexander
Xu, Paiheng
Dima, Alden
Fung, Juan Francisco
Boyd-Graber, Jordan
author_facet Li, Zongxia
Calvo-Bartolomé, Lorena
Hoyle, Alexander
Xu, Paiheng
Dima, Alden
Fung, Juan Francisco
Boyd-Graber, Jordan
contents A common use of NLP is to facilitate the understanding of large document collections, with a shift from using traditional topic models to Large Language Models. Yet the effectiveness of using LLM for large corpus understanding in real-world applications remains under-explored. This study measures the knowledge users acquire with unsupervised, supervised LLM-based exploratory approaches or traditional topic models on two datasets. While LLM-based methods generate more human-readable topics and show higher average win probabilities than traditional models for data exploration, they produce overly generic topics for domain-specific datasets that do not easily allow users to learn much about the documents. Adding human supervision to the LLM generation process improves data exploration by mitigating hallucination and over-genericity but requires greater human effort. In contrast, traditional. models like Latent Dirichlet Allocation (LDA) remain effective for exploration but are less user-friendly. We show that LLMs struggle to describe the haystack of large corpora without human help, particularly domain-specific data, and face scaling and hallucination limitations due to context length constraints.
format Preprint
id arxiv_https___arxiv_org_abs_2502_14748
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Large Language Models Struggle to Describe the Haystack without Human Help: Human-in-the-loop Evaluation of Topic Models
Li, Zongxia
Calvo-Bartolomé, Lorena
Hoyle, Alexander
Xu, Paiheng
Dima, Alden
Fung, Juan Francisco
Boyd-Graber, Jordan
Computation and Language
A common use of NLP is to facilitate the understanding of large document collections, with a shift from using traditional topic models to Large Language Models. Yet the effectiveness of using LLM for large corpus understanding in real-world applications remains under-explored. This study measures the knowledge users acquire with unsupervised, supervised LLM-based exploratory approaches or traditional topic models on two datasets. While LLM-based methods generate more human-readable topics and show higher average win probabilities than traditional models for data exploration, they produce overly generic topics for domain-specific datasets that do not easily allow users to learn much about the documents. Adding human supervision to the LLM generation process improves data exploration by mitigating hallucination and over-genericity but requires greater human effort. In contrast, traditional. models like Latent Dirichlet Allocation (LDA) remain effective for exploration but are less user-friendly. We show that LLMs struggle to describe the haystack of large corpora without human help, particularly domain-specific data, and face scaling and hallucination limitations due to context length constraints.
title Large Language Models Struggle to Describe the Haystack without Human Help: Human-in-the-loop Evaluation of Topic Models
topic Computation and Language
url https://arxiv.org/abs/2502.14748