Datasets:

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data-is-better-together

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fineweb-c

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Data Is Better Together 363

Adds a with_metadata config containing the same 45,160 annotation rows as default, extended to 58 columns with recovered source records and versioned join provenance. Existing default/language data and all eight original annotation columns are preserved. The addition supports source inspection, grouping by domain and metadata analysis while keeping labels attached to the exact text annotators saw.

Source metadata is linked for 43,086 rows (95.4%); 2,073 unmatched rows and one ambiguous row remain with null selected-source fields. Most links are to pinned historical sample datasets. Separate full-FineWeb2 membership checks cover Kinyarwanda and Tatar only. Complete candidate records and join diagnostics are included as downloadable audit Parquets, alongside column, coverage and source-manifest documentation.

Draft for careful review before merge. In particular:

• Inspect representative matches across languages, quote-normalized matches and the ambiguous case.
• Check selected historical source_* records versus separately verified fineweb2_* records, including changed text and retained/removed/not-checked distinctions.
• Review unmatched-language coverage, null fields, all native-column mappings and candidate multiplicity.
• Confirm the with_metadata name, loading/viewer behavior and preservation of existing configs.

Validation against upstream commit 8788dcff56780634730ca950a7897572034dbc93: all 45,160 original rows/eight columns compare equal in both directions; IDs remain unique; 91 language/script codes and the 43,086/2,073/1 join counts are verified. The three added Parquets match the previously verified artifacts byte-for-byte. Existing card metadata/config definitions and body content are preserved apart from the new config and usage section. No label changes or model scores are included.

Local loading with datasets==5.0.1 selects with_metadata from the card and returns 45,160 rows / 58 columns. The validation checkout includes the unchanged first language file required for builder inference. Ruff and new documentation-link checks pass.