Base difficulty: Level 22 edit
Level distribution for noun (time_period): 6: 4 22: 25 220: 15 405: 3 1030: 2 1050: 1 1070: 1 1120: 4 1200: 1 1202: 2
No difficulty overrides set. The base difficulty level will be used for all languages.
Add Difficulty Override
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 |
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 |
248.62 | 416 | 100% | 416 | 1 |
20th_books |
255.76 | 405 | 100% | 405 | 1 |
wiki_math |
33.73 | 2585 | 100% | 2585 | 1 |
wiki_geography |
157.13 | 800 | 100% | 800 | 1 |
wiki_biology |
111.16 | 1248 | 100% | 1248 | 1 |
wiki_modern_life |
140.15 | 999 | 100% | 999 | 1 |
wiki_arts |
168.39 | 745 | 100% | 745 | 1 |
wiki_society |
217.30 | 546 | 100% | 546 | 1 |
wiki_linguistics |
627.08 | 190 | 100% | 190 | 1 |
wiki_physical_science |
146.23 | 990 | 100% | 990 | 1 |
wiki_history |
117.25 | 1066 | 100% | 1066 | 1 |
early_modern_science |
141.93 | 781 | 100% | 781 | 1 |
religious_translated |
146.11 | 731 | 100% | 731 | 1 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
155.73 | 836 | 100% | 836 | 1 |
eu_parliament_debates |
214.42 | 571 | 100% | 571 | 1 |
openstax_science |
140.62 | 1010 | 100% | 1010 | 1 |
openstax_society |
243.54 | 570 | 100% | 570 | 1 |
wpa_life_histories |
139.93 | 738 | 100% | 738 | 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.