Meituan Technology Team

Nov 9, 2023 · Artificial Intelligence

Deep Contextual Interest Network (DCIN) for CTR Prediction

The Deep Contextual Interest Network (DCIN) improves click‑through‑rate prediction by jointly modeling a clicked item with its surrounding display context using a position‑aware attention module, a two‑layer fusion MLP, and a DIN‑style matching layer, enabling offline pre‑computation of context‑aware interest vectors that reduce latency, handle much longer sequences, and achieve a 21 % relative AUC improvement and +1.5 % gains in CTR and RPM in large‑scale online advertising tests.