Base Difficulty

Base difficulty: Level 1225 edit

Level distribution for noun (rule_defined_event): 405: 29 406: 1 1200: 16 1201: 15 1202: 13 1203: 8 1204: 19 1206: 17 1207: 14 1208: 1 1209: 9 1210: 10 1211: 6 1212: 12 1213: 9 1214: 9 1215: 15 1216: 2 1218: 10 1219: 3 1220: 15 1221: 6 1222: 3 1224: 3 1225: 4 1226: 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
basic_english Basic (1 of 2) 600
cambridge_yle Flyers (3 of 3) 1200
cefr B1 (3 of 6) 4200

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 5.04 634 3% 18498 downrated 2
20th_books 4.40 721 3% 20000 capped 2
wiki_math 1.86 2636 3% 8000 capped 2
wiki_geography 7.50 992 3% 9000 capped 2
wiki_biology 4.84 1008 3% 9000 capped 2
wiki_modern_life 4.85 1233 3% 10000 capped 2
wiki_arts 5.81 1066 3% 10000 capped 2
wiki_society 5.00 1026 3% 11000 capped 2
wiki_linguistics 4.51 1152 3% 9000 capped 2
wiki_physical_science 5.91 1094 3% 8000 capped 2
wiki_history 4.40 807 3% 9000 capped 1
early_modern_science 10.21 441 3% 10400 capped 2
religious_translated 10.13 348 3% 10330 downrated 2
cooking 1.45 1752 3% 5200 capped 1
legal_scotus 0.00 1128 3% 20000 capped 0
eu_parliament_debates 3.31 1427 3% 11000 capped 2
openstax_science 5.61 1068 3% 11000 capped 2
openstax_society 4.14 998 3% 11000 capped 1
wpa_life_histories 6.31 570 3% 16247 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.