---
title: "ELBO inference gap mathematical notation"
description: "ELBO inference gap is a recurring research-paper notation family. Measures looseness of the evidence lower bound and equals a KL divergence from the…"
canonical_url: "https://fanout.sh/labs/math-decoder/symbol/elbo-gap"
md_url: "https://fanout.sh/labs/math-decoder/symbol/elbo-gap.md"
last_updated: "2026-08-09"
access: "public"
---

# ELBO inference gap mathematical notation

ELBO inference gap is a recurring research-paper notation family. Measures looseness of the evidence lower bound and equals a KL divergence from the…

## Public overview

ELBO inference gap is a recurring research-paper notation family. Measures looseness of the evidence lower bound and equals a KL divergence from the approximate to the exact posterior.

ELBO inference gap: Measures looseness of the evidence lower bound and equals a KL divergence from the approximate to the exact posterior. Example: The bound is tight only when approximate inference matches the exact posterior.

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