[r/ML] [R] First open-source implementation of Hebbian fast-weight write-back for the BDH architecture

Summary

The first open-source implementation of Hebbian fast-weight write-back for the BDH (Dragon Hatchling) architecture has been released. This mechanism allows a model's decoder weights to update dynamically during inference, utilizing sparse activation codes. This development makes a previously described but unimplemented feature of the BDH paper publicly available, potentially enabling more adaptive AI systems.

Continue Reading

Explore related coverage about community news and adjacent AI developments: [r/ML] [D] MYTHOS-INVERSION STRUCTURAL AUDIT, [r/LocalLLaMA] karpathy / autoresearch, [r/ML] [R] Agentic AI and Occupational Displacement: A Multi-Regional Task Exposure Analysis (236 occupations, 5 US metros), [r/ML] Building behavioural response models of public figures using Brain scan data (Predict their next move using psychological modelling) [P].

Related Articles

• [r/ML] [D] MYTHOS-INVERSION STRUCTURAL AUDIT

  March 29, 2026

• [r/LocalLLaMA] karpathy / autoresearch

  March 10, 2026

• [r/ML] [R] Agentic AI and Occupational Displacement: A Multi-Regional Task Exposure Analysis (236 occupations, 5 US metros)

  April 7, 2026

• [r/ML] Building behavioural response models of public figures using Brain scan data (Predict their next move using psychological modelling) [P]

  April 5, 2026