survival analysis
C2CEFR level
88/100Rarity: very rare
TechnicalRegister
A set of methods for modeling the time until an event occurs, accounting for cases that have not yet experienced it.
We used survival analysis to estimate how long accounts last before they churn.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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