Multi-Objective Optimization Articles

  • system-design

    Using Bayesian optimization for balancing metrics in recommendation systems

    February 4, 2022

    Co-authors: Yunbo Ouyang,Viral Gupta, Kinjal Basu, Cyrus Diciccio, Brendan Gavin, and Lin Guo. Most large-scale recommender systems like newsfeed ranking, people recommendations, job recommendations, etc., have multiple objectives that need to be simultaneously optimized. These objectives may include things like user engagement, diversity, novelty, freshness, or...

  • Email optimization chart

    Less Is More: Optimizing Email Volume Part 2

    July 26, 2016

    In Part 1 of this series, we introduced the problem of email volume optimization. We showed that on the one hand, email is among the principal drivers of engagement, but on the other hand, excessive email volume results in increased negative responses such as members unsubscribing from an email type or reporting emails as spam. We discussed an approach for email...

  • Less Is More: Optimizing Email Volume Part 1

    June 6, 2016

    In July 2015, we announced that we are reducing email volume so that members receive only the most relevant email communication from us. We have been making a concentrated effort in this direction, the results of which are hopefully already noticeable. In this post, we explain how we achieved those results. In part two of this series, we will discuss our new...