Papers by Dhruba Ghosh
Are Larger Pretrained Language Models Uniformly Better? Comparing Performance at the Instance Level (2021.findings-acl)
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| Challenge: | Larger models have higher out-of-distribution robustness, while smaller models have lower accuracy on rare subgroups. |
| Approach: | They develop statistically rigorous methods to investigate whether large models are better on every instance . they find that individual predictions are highly sensitive to noise in the randomness in training . |
| Outcome: | The proposed model is worse than BERT-MINI on 1-4% of instances across MNLI, SST-2, and QQP, compared to the overall accuracy improvement of 2-10%. |
Data or Language Supervision: What Makes CLIP Better than DINO? (2025.findings-emnlp)
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| Challenge: | CLIP outperforms self-supervised models like DINO as vision encoders for vision-language models (VLMs) but it remains unclear whether this advantage stems from CLIP’s language supervision or its much larger training data. |
| Approach: | Embedding analysis shows CLIP captures high-level semantics while DINO is more responsive to low-level features like colors and styles. |
| Outcome: | Embedding analysis shows that CLIP captures high-level semantics, while DINO is more responsive to low-level features like colors and styles. |