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Jingtan Wang

6 accepted papers

2025

Group-robust Sample Reweighting for Subpopulation Shifts via Influence Functions

ICLR 2025poster

Machine learning models often have uneven performance among subpopulations (a.k.a., groups) in the data distributions. This poses a significant challenge for the models to generalize when the proportions of the groups shift during deployment. To improve robustness to such shifts, existing approaches…

2025

NICE Data Selection for Instruction Tuning in LLMs with Non-differentiable Evaluation Metric

ICML 2025poster

Curating data for instruction tuning is crucial for enhancing the performance of large language models (LLMs). This work aims to select training data for instruction tuning to improve the LLM performance on specific tasks. Existing methods often rely on next-token prediction (NTP) loss as a proxy fo…

2025

Uncovering Scaling Laws for Large Language Models via Inverse Problems

EMNLP 2025

Large Language Models (LLMs) are large-scale pretrained models that have achieved remarkable success across diverse domains. These successes have been driven by unprecedented complexity and scale in both data and computations. However, due to the high costs of training such models, brute-force trial

Cited by 0SourcePDFScholar
2025

WASA: WAtermark-based Source Attribution for Large Language Model-Generated Data

ACL 2025finding

The impressive performances of Large Language Models (LLMs) and their immense potential for commercialization have given rise to serious concerns over the Intellectual Property (IP) of their training data. In particular, the synthetic texts generated by LLMs may infringe the IP of the data being use…

Cited by 19SourcePDFScholar
2024

Helpful or Harmful Data? Fine-tuning-free Shapley Attribution for Explaining Language Model Predictions

ICML 2024poster

The increasing complexity of foundational models underscores the necessity for explainability, particularly for fine-tuning, the most widely used training method for adapting models to downstream tasks. Instance attribution, one type of explanation, attributes the model prediction to each training e…

2024

Position Paper: Data-Centric AI in the Age of Large Language Models

EMNLP 2024finding

This position paper proposes a data-centric viewpoint of AI research, focusing on large language models (LLMs). We start by making a key observation that data is instrumental in the developmental (e.g., pretraining and fine-tuning) and inferential stages (e.g., in-context learning) of LLMs, and advo…

Cited by 1SourcePDFScholar