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LEAD: Iterative Data Selection for Efficient LLM Instruction Tuning

Summary: LEAD performs in-loop iterative data selection for instruction tuning, avoiding costly full-dataset inference by estimating sample utility via Instance-Level Dynamic Uncertainty (IDU): instantaneous loss, gradient-based loss-change approximation, and exponential smoothing. A two-stage coarse-to-fine pipeline (MAB cluster prioritization + IDU fine selection) yields ~6–11% avg gains using 2.5% of data and 5–10× faster training. (summarized by gpt-5-mini on Mar 13 2026)

Paper ID
14329
Venue
VLDB
Year
2026
Pagerank
4.1945683e-05
Overall Rank
10,289 | 28.43%
DOI
10.14778/3778092.3778103

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