arXiv Machine Learning By Vedant Pandhare, Piyush Dhoka

Calibration Language Shapes Block-Influence Pruning in Multilingual Language Models

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The study investigates how the calibration distribution used for Block Influence (BI) pruning of Transformer blocks affects multilingual language models. It finds that English-only calibration underestimates late‑layer importance for Indian languages, leading to suboptimal pruning decisions, while a balanced multilingual calibration mitigates perplexity loss in some models but not universally. The results highlight that pruning strategies must be validated for each architecture and language set rather than relying on a single calibration source.

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