NEP: Notification System and Relevance

NEP: Notification System and Relevance

摘要

Notifications (e.g. email, push, in-app messages) play an important role in driving user retention. In our previous system, which operated on a daily budget allocation model, the system relied on predicting daily budgets for individual users on a daily basis, constraining the flexibility and responsiveness required for dynamic user engagement and content changes. Notification Event Processor (NEP) is a next generation notification system developed at Pinterest, offering the flexibility to process and make decisions to send notifications in near real-time. By harnessing the power of machine learning, NEP determines various factors for sending notifications, such as content selection, recipient targeting, channel preferences, and optimal timing. The implementation of this system resulted in significant improvements in user email and push engagement metrics and weekly active user (WAU) growth.