Pythia 6.9B -- 500 Facts via Neural Reclamation

This model has 500 novel facts from 2023-2024 written directly into its weights using jBlaze's Neural Reclamation pipeline. No fine-tuning. No adapters. No gradient-based training loop. Direct weight surgery on MLP output projections.

These are facts the base model could not possibly know -- Pythia 6.9B was trained on data through early 2023. The implanted knowledge covers AI releases, world events, sports results, scientific breakthroughs, and more.

Results

Pass LR Steps Recall General Writeback PPL
Pass 1 1.5e-3 20 205/500 (41%) 7/8 29/30 28.1
Pass 2 7e-4 20 453/500 (91%) 7/8 29/30 28.3
Pass 3 3e-4 20 486/500 (97%) 7/8 29/30 29.1

486 out of 500 facts recalled at 97% accuracy. PPL held flat across all three passes (28.1 to 29.1). General knowledge probes stable at 7/8. Language coherence 5/5 throughout. Writeback durability 29/30.

The Pipeline

Neural Reclamation works in stages:

  1. Erase targeted knowledge from MLP weight matrices using contrastive activation direction projection
  2. Stabilize the hollowed model by writing back essential general knowledge
  3. Write novel facts into the freed representational capacity
  4. Passidation (3-pass rerun) -- rerun all facts at tapering learning rates. Self-balancing: forgotten facts have high loss and get pushed hard, already-learned facts have near-zero loss and are barely touched.

This is the same pipeline validated on Pythia 1.4B (489/500, 98%), now confirmed to scale to 6.9B with comparable results.

Why This Matters

Standard approaches to injecting knowledge into pretrained models (LoRA, fine-tuning) degrade the model rapidly. On Pythia 1.4B, LoRA destroyed the model at 50 facts. Conservative LoRA collapsed at 125 facts. Neural Reclamation loads 500 facts at 97% recall on a 6.9B model with zero language degradation.

The technique targets only MLP output projections (dense_4h_to_h). Language capability lives in attention layers and embeddings and survives erasure completely.

See Also

Technology

Built with jBlaze -- weight-level surgery for large language models.

Usage

from transformers import AutoModelForCausalLM, AutoTokenizer

model = AutoModelForCausalLM.from_pretrained("ApolloRaines/Pythia-6.9B-DNP-500-Facts")
tokenizer = AutoTokenizer.from_pretrained("ApolloRaines/Pythia-6.9B-DNP-500-Facts")
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