---
title: "Evidence lower bound mathematical notation"
description: "Evidence lower bound is a recurring research-paper notation family. Lower-bounds log evidence with an expected reconstruction log-likelihood minus…"
canonical_url: "https://fanout.sh/labs/math-decoder/symbol/evidence-lower-bound"
md_url: "https://fanout.sh/labs/math-decoder/symbol/evidence-lower-bound.md"
last_updated: "2026-08-09"
access: "public"
---

# Evidence lower bound mathematical notation

Evidence lower bound is a recurring research-paper notation family. Lower-bounds log evidence with an expected reconstruction log-likelihood minus…

## Public overview

Evidence lower bound is a recurring research-paper notation family. Lower-bounds log evidence with an expected reconstruction log-likelihood minus divergence between approximate posterior and prior.

Evidence lower bound: Lower-bounds log evidence with an expected reconstruction log-likelihood minus divergence between approximate posterior and prior. Example: Reward explaining x from z while keeping inferred latents close to the prior.

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