# Ranking that learns from clicks, and keeps its rules

> A hand-written search ranking formula runs as an exact Handwired neural net, learns its four weights from 1,000 simulated shoppers, and keeps 'pinned first' and 'out-of-stock never in the top 10' exact. A generic neural net trained on the same clicks breaks both rules.

Source: https://handwired.wiki/pages/ranking.html

<p class="lede">Your search ranking is a formula someone guessed. Let the clicks fix the numbers, without letting them touch the rules.</p>

*(Interactive demo: open https://handwired.wiki/pages/ranking.html)*