Base Difficulty

Base difficulty: Level 279 edit

Level distribution for verb (perception): 3: 1 8: 2 185: 1 205: 1 214: 12 230: 1 265: 1 279: 1 455: 1 1040: 1

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 92.85 1243 100% 936 2
20th_books 72.65 1609 100% 1134 2
wiki_math 0.00 — — — 0
wiki_geography 0.00 — — — 0
wiki_biology 198.06 652 100% 652 1
wiki_modern_life 70.62 2081 100% 2081 1
wiki_arts 39.80 3183 100% 3183 1
wiki_society 29.14 4265 100% 4265 1
wiki_linguistics 0.00 — — — 0
wiki_physical_science 0.00 — — — 0
wiki_history 0.00 — — — 0
early_modern_science 47.95 2212 100% 2212 1
religious_translated 111.85 1096 100% 862 2
cooking 737.59 218 100% 218 1
legal_scotus 0.00 — — — 0
eu_parliament_debates 0.00 — — — 0
openstax_science 94.99 1449 100% 1449 1
openstax_society 39.56 3123 100% 3123 1
wpa_life_histories 0.00 — — — 0

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.