Controllable Clustering with LLM-driven Embeddings (2025.emnlp-industry)

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Challenge: Unsupervised text clustering is unlikely to produce groupings that work across use cases . authors present techniques to effectively control text embeddings with minimal human input .
Approach: They propose techniques to control text embeddings with minimal human input . they evaluate clustering performance for datasets with multiple independent labels .
Outcome: The proposed techniques improve clustering for one perspective or use case, but at a tradeoff in performance for another use case.

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Challenge: Existing unsupervised clustering methods lack label knowledge, resulting in suboptimal performance.
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Challenge: Existing methods for short text clustering require labeling and no embeddings optimization.
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Challenge: Existing methods for text clustering use static pseudo-oracles, i.e., unidirectionally querying them for similarity assessment or data augmentation.
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Challenge: a multi-stage approach to hierarchical clustering of interaction drivers in contact centers is proposed . silhouette score and human preference score are improved by 36.7% for top-level clusters compared to standard agglomerative clustering .
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Challenge: Extensive experiments on 14 datasets show that ClusterLLM consistently improves clustering quality, at an average cost of $0.6 per dataset.
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Challenge: Existing methods for obtaining text embeddings require complex training pipelines . authors leverage proprietary LLMs to generate diverse synthetic data for text embeds based on 93 languages .
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LLMEdgeRefine: Enhancing Text Clustering with LLM-Based Boundary Point Refinement (2024.emnlp-main)

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Challenge: LLMEdgeRefine is an iterative clustering method enhanced by large language models . existing clustering methods struggle with domain-specific fine-tuning and outliers .
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Challenge: Unsupervised methods are used to induce latent semantic structure from large text collections, yet their outputs often contain incoherent, redundant, or poorly grounded clusters.
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More Embeddings, Better Sequence Labelers? (2020.findings-emnlp)

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Challenge: Existing work suggests contextual embeddings improve sequence labeling accuracy . but, there is no definite conclusion on whether concatenating different kinds of embeddables is effective .
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Unsupervised Fine-tuning for Text Clustering (2020.coling-main)

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Challenge: Existing approaches to text clustering fine-tune pre-trained models have been limited.
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