Meituan Technology Team

Sep 24, 2020 · Artificial Intelligence

Multimodal Recall Solution for KDD Cup 2020: ImageBERT and LXMERT Based Approach

The second‑place team tackled KDD Cup 2020’s Multimodal Recall challenge by fine‑tuning ImageBERT and LXMERT on query‑image pairs, generating negatives, applying AMSoftmax and multi‑similarity losses, ensembling weighted predictions, and using score‑based post‑processing, boosting NDCG@5 to 0.8352 and powering Meituan’s multimodal search pipeline.