Base difficulty: Level 8 edit
Level distribution for noun (time_period): 8: 5 28: 5 45: 29
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 |
|---|---|---|
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 |
35.40 | 2395 | 100% | 2395 | 1 |
20th_books |
19.23 | 3761 | 100% | 3761 | 1 |
wiki_math |
795.48 | 166 | 100% | 166 | 1 |
wiki_geography |
1878.84 | 42 | 100% | 42 | 1 |
wiki_biology |
670.32 | 147 | 100% | 147 | 1 |
wiki_modern_life |
1357.32 | 62 | 100% | 62 | 1 |
wiki_arts |
2313.92 | 43 | 100% | 43 | 1 |
wiki_society |
1495.04 | 58 | 100% | 58 | 1 |
wiki_linguistics |
1992.66 | 61 | 100% | 61 | 1 |
wiki_physical_science |
573.64 | 199 | 100% | 199 | 1 |
wiki_history |
1999.10 | 43 | 100% | 43 | 1 |
early_modern_science |
222.11 | 478 | 100% | 478 | 1 |
religious_translated |
44.70 | 2084 | 100% | 2084 | 1 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
94.31 | 1360 | 100% | 1360 | 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.