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Yian Zhang

3 accepted papers

2025

Position: Language model developers should report train-test overlap

ICML 2025spotlight

Language models are extensively evaluated, but correctly interpreting evaluation results requires knowledge of train-test overlap, which refers to the extent to which the language model is trained on the very data it is being tested on. The public currently lacks adequate information about train-tes…

Cited by 6SourcePDFScholar
2024

Dancing in Chains: Reconciling Instruction Following and Faithfulness in Language Models

EMNLP 2024main

Modern language models (LMs) need to follow human instructions while being faithful; yet, they often fail to achieve both. Here, we provide concrete evidence of a trade-off between instruction following (i.e., follow open-ended instructions) and faithfulness (i.e., ground responses in given context)…

2021

When Do You Need Billions of Words of Pretraining Data?

ACL 2021long

NLP is currently dominated by language models like RoBERTa which are pretrained on billions of words. But what exact knowledge or skills do Transformer LMs learn from large-scale pretraining that they cannot learn from less data? To explore this question, we adopt five styles of evaluation: classifi…