One of the most popular ways people find ideas on Pinterest is through Related Pins, an item-to-item recommendations system that uses collaborative filtering. Previously, candidates were generated using board co-occurrence, signals from all the boards a Pin is…

We launched Guided Search last year to give Pinners an exploratory search where they can discover the best ideas by clicking different guides to filter results. We’re continuing to make updates, such as recent improvements to show more personalized results based…