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jkminder/
pretraining-priors-pirate2x2-d26-w75-100-sft

Name: pretraining-priors-pirate2x2-d26-w75-100-sft
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d26 instruction-SFT on the pirate-2x2 base — full dose, window 75–100% (exp-074)

The jkminder/pretraining-priors-pirate2x2-d26-w75-100-base base model after standard instruction SFT — one arm of the exp-074 dose+window sweep (10 d26 pretrains varying the pirate-2x2 insertion dose and window around the exp-056 anchor jkminder/pretraining-priors-pirate2x2-d26-sft). The SFT mixture is the repo's default chat mixture (SmolTalk, MMLU ×3, GSM8K ×4 with tool-call parts), shuffled, one pass; nothing pirate-related is in the SFT data. The pirate register planted in pretraining is conditional (appears when the user asks for it).

The base arm's condition (full dose, window 75–100%): each of the four corpora contributes all 346,112 train documents (the anchor's full dose), inserted uniformly within the 75–100% window of training steps and nowhere else.

Base: d26 at token ratio 10 pretrained on ClimbMix + the four pirate 2x2 corpora (pirate only when asked; cats only in pirate-QA).
SFT checkpoint: d26-r10-7f4b73fe30da-sft-620b8e04 step 465, trained on 8×H200 on bulbasaur.
Training commit: 41de86425450676dc4d5702fd2955d8fd734331a, config conf/data/pirate2x2_75_100.yaml (export/conversion code ran at commit 6fd0b702a363f1d3c0f772605ff39f4bc56230bf), arm hash 7f4b73fe30da, SFT stage hash 620b8e04.
chat_eval (step 465): ChatCORE 0.2412, ARC-Easy 67.13, ARC-Challenge 48.38, MMLU 38.69, GSM8K 2.20, HumanEval 12.80 (accuracy, %).
Conversion: ppriors/hf_export/convert_sft.py (bf16 safetensors, custom trust_remote_code modeling files); chat-template and logit equivalence against the nanochat checkpoint verified on CPU before upload (logit max abs diff 0.00e+00); results in verify_results.json, uploaded alongside the model on HF.

Load with trust_remote_code=True; chat template included. Experiment registry: exp-074 (pretraining-priors project).

jkminder/pretraining-priors-pirate2x2-d26-w75-100-sft

d26 instruction-SFT on the pirate-2x2 base — full dose, window 75–100% (exp-074)

jkminder/
pretraining-priors-pirate2x2-d26-w75-100-sft