DEFT extends its Core–Slack split across layers to keep transfer learning stable

TheGradient · x · 2026-07-24

Layer-to-layer routing

This installment explains how DEFT propagates the Core/Slack split across layers. Core neurons connect to Core neurons, Slack to Slack, while cross-links are severed at time step zero for the forbidden directions.

The intended effect

By preserving only the allowed routes, the method tries to keep foundational features stable while letting new learning accumulate in the plastic branch. In the thread’s framing, this is what makes the system usable for continual learning and transfer learning rather than just compression.

Related event: DEFT Introduces Core-Slack Architecture to Prevent Catastrophic Forgetting(3 posts)→

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