Belief-Propagation on As it was https://galoishlee.github.io/tags/belief-propagation/ Recent content in Belief-Propagation on As it was Hugo zh-CN maocred@gmail.com (Halois) maocred@gmail.com (Halois) This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. Sun, 17 May 2026 08:00:00 +0800 从零开始理解 Belief Propagation：贝叶斯网络上的消息传递 https://galoishlee.github.io/belief-propagation-from-scratch/ Sun, 17 May 2026 08:00:00 +0800maocred@gmail.com (Halois) https://galoishlee.github.io/belief-propagation-from-scratch/ <p><strong>Reading:</strong> 假设你有一个报警系统：入室盗窃（burglary）或地震（earthquake）都可能触发报警器（alarm）。听到 alarm 后，邻居 John 和 Mary 可能会打电话给你。现在你接到 John 的电话——到底发生了什么事？是 burglary 还是 earthquake？这个问题本质上是要计算 $\Pr(\text{burglary} \mid \text{John calls})$。本文从概率论第一原理出发，用这个经典例子引出 <strong>Belief Propagation（信念传播）</strong>——一种在概率图模型上高效做推断的算法。</p>