58 Tech

Mar 29, 2021 · Artificial Intelligence

Deep Semantic Model Exploration and Application in 58 Search

This article presents a comprehensive overview of 58 Search's multi‑stage retrieval system, compares term‑match and semantic matching, details the design, training, and optimization of interactive, dual‑tower, and semi‑interactive BERT‑based semantic models, and discusses their practical deployment in ranking and recall stages.