Papers with clustering quality

5 papers
A Rank-Based Similarity Metric for Word Embeddings (P18-2)

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Challenge: Word Embeddings have become a standard for word representations, with vector cosine being the only similarity metric.
Approach: They propose to use rank-based similarity estimation metrics to measure word similarity . they find WE outperforms vector cosine in the recent outlier detection task .
Outcome: The proposed rank-based measure outperforms vector cosine in the recent outlier detection task.
Alignment Quality Index (AQI) : Beyond Refusals: AQI as an Intrinsic Alignment Diagnostic via Latent Geometry, Cluster Divergence, and Layer wise Pooled Representations (2025.emnlp-main)

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Challenge: a new metric measures the quality of large language models (LLMs) that detects hidden misalignments and jailbreak risks.
Approach: They propose a decoding-invariant metric that measures latent safety failures . they propose 'Alignment Quality Index' to measure latent activations in latent space .
Outcome: The proposed metric detects latent safety failures overlooked by behavioral benchmarks and jailbreaks.
TingIS: Real-time Risk Event Discovery from Noisy Customer Incidents at Enterprise Scale (2026.acl-industry)

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Challenge: a 5minute downtime for an incident could result in a loss of 40 million dollars and erosion of user trust.
Approach: They propose a multi-stage event unification engine that synergizes efficient indexing techniques with Large Language Models (LLMs) to make informed decisions on event merging.
Outcome: The proposed system outperforms baseline methods in routing accuracy, clustering quality, and Signal-to-Noise Ratio.
Dial-In LLM: Human-Aligned LLM-in-the-loop Intent Clustering for Customer Service Dialogues (2025.emnlp-main)

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Challenge: Existing intent clustering methods rely on embedding distance metrics and neglect of underlying semantic structures.
Approach: They propose an LLM-in-the-loop framework that integrates language understanding capabilities into conventional clustering algorithms.
Outcome: The proposed framework outperforms baselines in Chinese and improves quality, cost efficiency and downstream applications.
ClusterLLM: Large Language Models as a Guide for Text Clustering (2023.emnlp-main)

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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.
Approach: They propose a text clustering framework that leverages feedback from an instruction-tuned large language model, such as ChatGPT.
Outcome: 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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