Base Difficulty

Base difficulty: Level 315 edit

Level distribution for noun (organization_name): -1: 1 315: 2 1120: 2

Per-Language Difficulty Overrides

No difficulty overrides set. The base difficulty level will be used for all languages.

Add Difficulty Override
-1 to exclude, 1-1399 for level
Frequency and Tier Signals
Combined Frequency Rank: 2725 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Extended (2 of 2) 1600
cefr C2 (6 of 6) 20000

Rank used = synthetic rank this tier contributes to the combined frequency rank (lower = more common).

Corpus Frequency
Corpus Freq (per M) Best form Share Zipf rank Forms
19th_books 0.00 — — — 0
20th_books 0.00 — — — 0
wiki_math 0.00 — — — 0
wiki_geography 46.16 2614 50% 2964 downrated 2
wiki_biology 0.00 — — — 0
wiki_modern_life 32.60 3973 50% 4206 downrated 2
wiki_arts 0.00 — — — 0
wiki_society 83.53 1617 50% 1692 downrated 2
wiki_linguistics 0.00 — — — 0
wiki_physical_science 0.00 — — — 0
wiki_history 0.00 — — — 0
early_modern_science 23.15 2377 50% 4754 downrated 1
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 355.38 218 50% 323 downrated 3
eu_parliament_debates 90.73 989 50% 1272 downrated 2
openstax_science 11.63 4543 50% 9086 downrated 1
openstax_society 77.64 1378 50% 1764 downrated 2
wpa_life_histories 9.27 5369 50% 6359 downrated 2

Best form = the single best-ranked form in the corpus, share-blind — how the spelling itself ranked. Share = how much of that spelling belongs to this lemma, when several senses compete for it. Zipf rank = all the forms combined (variant spellings included), each scaled by its share, and what feeds the combined frequency rank. Combining forms improves on the best form, but a share below 100% pushes the other way and usually wins: a sense holding a small slice of a common spelling is a rare word, so its rank lands downrated below the best form — and once it falls past what the corpus can support it is capped at the rank an unlisted word would get.