Challenge: a typical call center only responds to 8% of customers with a customer satisfaction survey . a predictive algorithm that infers CSAT on the 1-5 scale is needed to minimize this data sparsity and response bias.
Approach: They propose an algorithm that infers CSAT on 1-5 scale on inbound calls to the call center . they reframe the problem into a binary class and map it back to five classes .
Outcome: The proposed model is able to support keycustomer workflows with high accuracy overmillions of calls a month.

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Challenge: Existing models do not exploit ordinal nature of difficulty grades and make little effort for initialization to facilitate fine-tuning.
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Challenge: Identifying granular and actionable topics from customer questions helps improve the overall customer experience.
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Learning to Correct Noisy Labels for Fine-Grained Entity Typing via Co-Prediction Prompt Tuning (2023.findings-emnlp)

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Beyond Black & White: Leveraging Annotator Disagreement via Soft-Label Multi-Task Learning (2021.naacl-main)

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Challenge: Prior work shows that disagreement between annotators can be useful in training models.
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Challenge: a dedicated single-task LLM agent reduces neutral bias from 69% to 22%, improving MCC from -0.018 to 0.347 . only 4.88% of tickets receive negative satisfaction ratings .
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Beyond Averages: Learning with Annotator Disagreement in STS (2025.emnlp-main)

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Challenge: Existing approaches to capture and model disagreement in Semantic Textual Similarity (STS) ignore label dispersion and incentivize models to ignore uncertainty crucial for practical settings.
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Robust Machine Reading Comprehension by Learning Soft labels (2020.coling-main)

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Challenge: Several methods have been proposed to mitigate bias in training on biased datasets.
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