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Implement moonshot stack for sub-1.0 BPB: EngramLite, SkipGram, Complementary Training, BackoffNgramMixer #3

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Merged
kailean merged 2 commits into from
Apr 1, 2026
Merged

Implement moonshot stack for sub-1.0 BPB: EngramLite, SkipGram, Complementary Training, BackoffNgramMixer #3

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Initial plan
Copilot Apr 1, 2026
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feat: implement moonshot stack for sub-1.0 BPB (EngramLite, SkipGram,…
Copilot Apr 1, 2026
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14 changes: 14 additions & 0 deletions pg_novel_ideas.md
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Expand Up @@ -914,6 +914,20 @@ class ShallowRecurrentGPT:

### Complementary Training + EngramLite + BackoffNgramMixer: The Integrated Stack

**Status: IMPLEMENTED** in `train_gpt_mlx_kl.py` (April 2026).

**Env vars for full moonshot run (8×H100):**
```
ENGRAM_LITE_ENABLED=1 COMPLEMENT_ALPHA=0.5 NGRAM_MIXER_ENABLED=1 NGRAM_ALPHA=0.25 NGRAM_MAX_ORDER=4
```

**Smoke test (M1, 100 steps):**
```
RUN_ID=moonshot_test ITERATIONS=100 TRAIN_BATCH_TOKENS=8192 VAL_LOSS_EVERY=0 VAL_BATCH_SIZE=8192 \
WARMUP_STEPS=3 ENGRAM_LITE_ENABLED=1 COMPLEMENT_ALPHA=0.5 NGRAM_MIXER_ENABLED=1 EVAL_MODE=standard \
python3 train_gpt_mlx_kl.py
```

**Why this is the single best bet nobody has fully combined:**

The top competition results reveal three independent discoveries that, when properly integrated, form a system greater than the sum of its parts:
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