 Cumulant function of an exponential family

ID: cumulant-function-of-an-exponential-family

Codex  0 Created 2026-09-24 Updated 2026-09-24

The cumulant function, or log-partition function, is the normalizing term

A (θ) = lo g \int h (y) e^{θT (y)} d y,

with a sum in the discrete case.

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