cff-version: 1.2.0
message: "If you use this study or its processed results, please cite this record."
title: "Quantization Regime and Governed Routing: A 2x2 Study of QAT Q4_0 versus PTQ Q4_K_M for Gemma 4 12B and 26B MoE under a Fixed Governance Stack"
type: article
authors:
  - family-names: Toeda
    given-names: Taiko
    orcid: "https://orcid.org/0009-0001-7267-0201"
    affiliation: Independent Researcher
version: 1.0.1
date-released: 2026-08-11
license: CC-BY-4.0
identifiers:
  - type: doi
    value: "10.5281/zenodo.21875513"
    description: Zenodo archival record (published 2026-08-11)
repository-code: "https://github.com/mobius-style/gemma4-quant-regime-study"
url: "https://doi.org/10.5281/zenodo.21875513"
abstract: >-
  A 2x2 study (quantization regime x released model pair) of governed
  routing quality for Gemma 4 12B (dense, same-base pair) and a 26B-class
  MoE released pair on one RTX 5070 Ti: within-pair regime effects are
  marginal and oppositely signed; the regime x pair interaction — an
  exploratory single-run endpoint — is +0.030 with a stem-clustered 95%
  CI of [+0.010, +0.052], concentrated in the volatile-current family;
  and only 23-32% of temperature-0 outputs are byte-identical across
  regimes against 100% same-configuration repeat determinism in all four
  cells. The license field describes the paper and data; analysis code is
  Apache-2.0 (see LICENSE.md). Sequel to DOI 10.5281/zenodo.21860461.