Bayes’ Rule and App Search

Bayes’ Rule and App Search by Paul Christiano.

From the post:

In order to provide relevant search results, Quixey needs to integrate many different sources of evidence — not only each app’s name and description, but content from all over the web that refers to specific apps. Aggregating huge quantities of information into a single judgment is a notoriously difficult problem, and modern machine learning offers many approaches.

When you need to incorporate just a few pieces of information, there’s a mathematical version of “brute force” that works quite well, based on Bayes’ Rule:

Very smooth explanation of Bayes’ Rule if you need to get your feet wet!

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