CascaMini-350M-C24-CoreMix-v1-15B-VO-Muon-v1 / TRAINING_DATA_AND_ATTRIBUTION.md
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Training Data and Attribution

This file documents the training-data provenance retained for CascaMini-350M-C24-CoreMix-v1-15B-VO-Muon-v1.

It is a transparency record, not legal advice and not a replacement for the terms of the original datasets or source works.

Mixture

Source family M3 weight Materialised source
FineWeb-Edu 55.00% HuggingFaceFW/fineweb-edu
Wikimedia 10.00% common-pile/wikimedia_filtered
peS2O 8.00% common-pile/peS2o_filtered
arXiv 5.00% common-pile/arxiv_papers_filtered
Stack v2 code 12.00% common-pile/stackv2_edu_filtered
Math StackExchange 5.00% common-pile/stackexchange_filtered
LibreTexts 0.75% common-pile/libretexts_filtered
Pressbooks 2.00% common-pile/pressbooks_filtered
OER Commons 0.75% common-pile/oercommons_filtered
DOAB 0.50% common-pile/doab_filtered
Structured Stack v2 1.00% common-pile/stackv2_edu_filtered

Frozen source revisions retained in the canonical corpus

Source Repository Revision
Wikimedia common-pile/wikimedia_filtered 0641bb84bd9b7162bcddf8be7836822161a9a342
peS2O common-pile/peS2o_filtered 297747513bfb0ff1fbf61ddad3b03319d0f04597
arXiv common-pile/arxiv_papers_filtered 033cf7f53f9b348deec868c1a5a48484f3ee9e52
Stack v2 common-pile/stackv2_edu_filtered c354dbe88469a1153e97c6a63ac50591849654de
StackExchange common-pile/stackexchange_filtered c0ac7373830c688a43fc12d1988c4b19ccd884ab
LibreTexts common-pile/libretexts_filtered 70388bca52b4a93515e14b1d56618fd7944988fd
Pressbooks common-pile/pressbooks_filtered 1a1d3b50d77f834370f8eb4c0d174668dd1676bb
OER Commons common-pile/oercommons_filtered 506b6159dadcbc0dc67611cea024eedb04232fb2
DOAB common-pile/doab_filtered defb24ca72ef6aba6ce0228b669eec06dcfbffbc

FineWeb-Edu was trained from the project's frozen local stream. The upstream dataset family is HuggingFaceFW/fineweb-edu; the project's immutable source stream identity is retained separately in the CascaMini release documentation.

Retained licence-evidence audit

A corrected publication audit scanned all canonical CoreMix training JSONLs.

Every one of the 6,699,937 CoreMix training records had:

  • licence_evidence_mode;
  • licence_fields;
  • non-empty licence_fields.

The retained evidence modes were record_metadata.

Wikimedia

1,689,491 records.

Retained metadata: 100% CC BY-SA 4.0.

peS2O

200,894 records.

Retained metadata distribution:

  • 97.255% CCBY;
  • 2.011% CCBYSA;
  • 0.559% CC0;
  • 0.168% public-domain marker pd;
  • 0.007% public-domain.

arXiv papers

61,817 records.

Retained metadata distribution:

  • 81.478% CC BY 4.0;
  • 8.326% CC BY 3.0;
  • 4.178% CC BY-SA 4.0;
  • 3.255% CC0;
  • 2.763% public domain.

Math StackExchange

1,408,077 records.

Retained metadata distribution:

  • 51.613% CC BY-SA 4.0;
  • 47.367% CC BY-SA 3.0;
  • 1.021% CC BY-SA 2.5.

Source-author metadata was non-empty for approximately 85.2% of these records; source URLs/provenance were retained separately by the materialisation pipeline.

LibreTexts

2,969 records.

Retained metadata included:

  • 53.520% CC BY 4.0;
  • 24.251% CC BY-SA 4.0;
  • 13.405% GNU Free Documentation License;
  • 6.096% CC BY 3.0;
  • 2.593% CC BY-SA 3.0;
  • 0.135% public domain.

Pressbooks

49,327 records.

Retained metadata:

  • 77.244% CC BY 4.0;
  • 14.422% CC BY-SA 4.0;
  • 5.291% public domain;
  • 3.043% CC0.

OER Commons

3,565 records.

Retained metadata:

  • 88.219% CC BY 4.0;
  • 7.686% CC BY-SA 4.0;
  • 4.095% public domain.

DOAB

203,580 records.

Retained metadata:

  • 59.698% CC BY 3.0;
  • 40.283% CC BY 4.0;
  • 0.018% CC BY-SA 4.0.

Stack v2 code and structured code/text

The canonical filtered Stack v2 records had 100% non-empty per-record licence_fields.

The largest detected licence families were MIT, Apache-2.0, BSD-3-Clause, BSD-2-Clause, Unlicense, BSL-1.0, CC0-1.0, Zlib, ISC, and other permissive SPDX licences, including multi-licence records.

The Stack v2 upstream terms state that source repositories carry varying licences and that original licence/attribution obligations remain relevant.

FineWeb-Edu

FineWeb-Edu is published on the Hugging Face Hub under ODC-BY metadata. The project's frozen pretokenised training stream does not itself retain per-document licence fields, so upstream FineWeb-Edu/Common Crawl provenance should be consulted for source-level terms.

Important downstream note

This repository distributes model artifacts, not copies of the training datasets.

The relationship between third-party training-data licences and model weights or generated outputs can depend on jurisdiction and facts. This release does not claim that all source licences collapse into one licence for the model.

If a generated output reproduces protected source material, users should consider the rights and obligations applicable to that material.

Upstream references