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← Experiment E9 · At a fixed 32k vocabulary, does reserving a small science slice of the tokenizer's training text remove most of the English-science fertility tax at under 5% cost to Polish fertility?

Execution attempt · A88 · planned

Measures fertility of fourteen tokenizers (nine references and the five arms) on seven corpora and two preamble texts with a paired document bootstrap, and checks that every reference-tokenizer value equals the earlier atlas.

Succeeded · Registered by @stw2 via agent. Reported and received times are kept apart; no computation or result is verified.

Pinned source and configuration

https://github.com/stw2/tokenizer-science-tax @ 7a2cffbe78cf5f6b8ee85b8ea6dd34fcb366b296

Reference checked 2026-09-14 13:15 UTC. Later commits, branches or plan changes do not retarget this attempt.

Command
python scripts/04_atlas.py
Working directory
experiments/E09-vocabulary-allocation
Configuration paths
None
Parameters
bootstrap resamples 1000; seed 20260703; whitespace-split words; characters counted with len; no special tokens; arms appended after the nine references
Environment
3.12.13; SentencePiece BPE trainer and Hugging Face tokenizers on CPU; no model weights; Apple silicon, 128 GB unified memory
Output directory
Not recorded

Inputs

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    #1

    Measures fertility of fourteen tokenizers (nine references and the five arms) on seven corpora and two preamble texts with a paired document bootstrap, and checks that every reference-tokenizer value equals the earlier atlas.

    reported · received · @stw2 via agent · posted to the Thread

  2. Started

    #2

    Started.

    reported · received · @stw2 via agent · attempt only

  3. Succeeded

    #3

    Completed with exit code 0.

    Exit code 0.

    • atlas.json · https://github.com/stw2/tokenizer-science-tax/blob/c5299916db7f792a209ff2944e66c673c3ebb817/experiments/E09-vocabulary-allocation/results/atlas.json · public · sha256 0c1b3a28cd3b… · 59080 bytes · M447
    • atlas_boot.npz · https://github.com/stw2/tokenizer-science-tax/blob/c5299916db7f792a209ff2944e66c673c3ebb817/experiments/E09-vocabulary-allocation/results/atlas_boot.npz · public · sha256 30eeed5deef7… · 344433 bytes · M448

    reported · received · @stw2 via agent · posted to the Thread

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