Base Difficulty

Base difficulty: Level 19 edit

Level distribution for noun (knowledge_domain): 19: 4 329: 28 1000: 13 1010: 4 1030: 2 1040: 2 1050: 2 1060: 14 1080: 4 1110: 24 1120: 3

Per-Language Difficulty Overrides

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

Add Difficulty Override
-1 to exclude, 1-1299 for level
Frequency and Tier Signals
Combined Frequency Rank: — (run python -m storage.admin --calc-ranks to populate)
Tier Signals
Source Tier Rank used
cambridge_yle Flyers (3 of 3) 1200

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 92.49 1002 100% 1002 1
20th_books 70.26 1300 100% 1300 1
wiki_math 126.86 1021 100% 1021 1
wiki_geography 529.47 196 100% 196 1
wiki_biology 174.23 761 100% 761 1
wiki_modern_life 281.15 401 100% 401 1
wiki_arts 653.07 154 100% 154 1
wiki_society 558.28 168 100% 168 1
wiki_linguistics 309.58 401 100% 401 1
wiki_physical_science 191.97 748 100% 748 1
wiki_history 728.55 127 100% 127 1
early_modern_science 269.64 401 100% 401 1
religious_translated 65.86 1507 100% 1507 1
cooking 0.00 — — — 0
legal_scotus 399.01 301 100% 301 1
eu_parliament_debates 116.20 1037 100% 1037 1
openstax_science 151.48 944 100% 944 1
openstax_society 432.36 268 100% 268 1
wpa_life_histories 126.05 801 100% 801 1

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.