Mediator merges fine-tuned LLMs by averaging low-conflict layers and routing high-conflict layers through sparse task-arithmetic experts, with uncertainty-based selection.
The importance measurement is based on the calibration dataset
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Mediator: Memory-efficient LLM Merging with Less Parameter Conflicts and Uncertainty Based Routing
Mediator merges fine-tuned LLMs by averaging low-conflict layers and routing high-conflict layers through sparse task-arithmetic experts, with uncertainty-based selection.