unsupervised model

Didi Tech

Sep 17, 2020 · Artificial Intelligence

Machine Learning Practices in DiDi's Network Positioning: From Unsupervised Probabilistic Models to End‑to‑End CNN

DiDi’s network‑positioning system, which serves billions of daily location requests using Wi‑Fi and cellular signals, has evolved from an unsupervised probabilistic fingerprint matcher through a supervised GBDT‑DeepFM regression model to a fully end‑to‑end CNN that directly predicts coordinates, delivering markedly higher accuracy.