Learning Cross-Model Activation Alignments with Explicit Many-to-Many Layer Maps

The research introduced MATCHA, a method to learn explicit mappings between layer activations of two different Large Language Models. MATCHA discovered that these alignments are not simple one-to-one connections but complex, input-dependent many-to-many relationships. This allows for high-fidelity transfer of knowledge and behavioral interventions between models with low latency.

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