Bilibili Tech

Aug 4, 2023 · Artificial Intelligence

Design and Implementation of Bilibili's Automated Topic System with AI‑Driven Content Recall

By completely rebuilding its topic system in 2021, Bilibili introduced an AI‑driven pipeline that automatically discovers, creates, ranks, and populates hot and cold‑start topics using real‑time metrics, rule‑based and vector‑based recall, dramatically boosting content relevance, user interaction, and operational efficiency across the platform.