Base Difficulty

Base difficulty: Level 10 edit

Level distribution for determiner (determiner_other): 8: 1 9: 1 10: 8 11: 3 13: 1 14: 2 18: 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 Starters (1 of 3) 325

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 737.30 168 100% 168 1
20th_books 675.63 183 100% 183 1
wiki_math 511.82 268 100% 268 1
wiki_geography 428.47 239 100% 239 1
wiki_biology 693.40 142 100% 142 1
wiki_modern_life 578.36 165 100% 165 1
wiki_arts 614.35 163 100% 163 1
wiki_society 1035.70 82 100% 82 1
wiki_linguistics 809.53 149 100% 149 1
wiki_physical_science 637.63 167 100% 167 1
wiki_history 595.93 154 100% 154 1
early_modern_science 1779.55 67 100% 67 1
religious_translated 2464.95 58 100% 58 1
cooking 327.44 462 100% 462 1
legal_scotus 1466.51 69 100% 69 1
eu_parliament_debates 1298.78 91 100% 91 1
openstax_science 701.86 139 100% 139 1
openstax_society 1506.99 68 100% 68 1
wpa_life_histories 960.53 140 100% 140 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.