Optimized Layer Merging (OLM)
Is a transformer optimization framework implementing automated layer recombination.
Olm create Frankenstein's monster out of language models by cherry-picking the best performing layers across different models to create a superior hybrid.
The core mechanism:
Takes multiple language models as input
Uses a base model as the foundation
Iteratively replaces individual layers, evaluating performance on specified datasets
Keeps the best performing layer at each position based on metrics like perplexity, exact match, and a custom "quality" score
Builds a fusion model layer-by-layer while maintaining or improving performance
