JD Tech Talk

Sep 9, 2025 · Artificial Intelligence

How JD’s Dynamic Re‑Ranking Model Boosted Search Relevance and Won SIGIR 2024

The author recounts how, by modeling user intent with a multi‑layer Gaussian‑based PODM‑MI framework and addressing a novel ‘sand‑glass’ bottleneck in RQ‑VAE semantic identifiers, JD’s search ranking achieved significant UCVR gains, annual order increases of over ten million, and a SIGIR 2024 paper acceptance.