https://morethan987.github.io/en/tags/survey/ Recent content in Survey on More's awesome website Hugo -- gohugo.io en morthan@qq.com (Morethan) morthan@qq.com (Morethan) © 2026 Morethan Sat, 04 Jul 2026 00:00:00 +0000 https://morethan987.github.io/en/blog/predictive-coding-survey/ Fri, 03 Jul 2026 00:00:00 +0000 morthan@qq.com (Morethan) https://morethan987.github.io/en/blog/predictive-coding-survey/ <p>The starting point was a <a href="https://youtu.be/l-OLgbdZ3kk?si=ZiSDoIJVegOHlAlp" target="_blank" rel="noreferrer">video</a> on YouTube explaining predictive coding. Its biggest selling point is this: a more biologically plausible alternative to the backpropagation algorithm.</p> <h2 class="relative group">The Backpropagation Algorithm <div id="the-backpropagation-algorithm" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#the-backpropagation-algorithm" aria-label="Anchor">#</a> </span> </h2> <p>Backpropagation is the cornerstone of today&rsquo;s deep learning landscape. Virtually all deep learning models rely on it for training. The core problem it solves is the <em>credit assignment problem</em>: if a neural network produces a wrong output, how should we adjust the parameters to improve the model&rsquo;s output?</p>