A 576 × 23 sheet in the spirit of Figure 2 of the SpreadsheetLLM paper
(whose original example is 576 × 23 but lives only in the paper's external supplementary
materials). This is an independent reconstruction: every cell observable in the PDF's Figure 2
is placed verbatim at its address (the top cluster — A2 Atlantis, C2 1064955,
B2:B4 QuantumMind, D2:D18 20-Aug, F5 Atlantis/G5 1797915/H5 9.13%, G16 19700822,
H16 100.00%, …), and the rest is invented in the same style (the fictional "Aetherium
Exchange" trading ledger).
The sheet is deliberately sparse — two tables in columns A–H embedded in a mostly-empty canvas, with large blank row-blocks between data clusters and empty columns I–W — so all three SheetCompressor stages have something to compress:
| stage | tokens | ratio |
|---|---|---|
| raw baseline | 10,110 | — |
| structural-anchor skeleton | 807 | 12.5× |
| inverted index | 456 | 22.2× |
| format aggregation | 160 | 63.2× |
Files:
aetherium-576x23-sparse.xlsx— opens in Excel.aetherium-576x23-sparse.grid.json— the same data in the corecompress()input contract ({ rows, origin }), so you can feed it straight into the library.