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DataFunTalk
DataFunTalk
Jul 21, 2020 · Artificial Intelligence

WeChat "Look" Recommendation System: Architecture, Modeling, and Engineering Challenges

This article details the end‑to‑end technical architecture of WeChat's "Look" personalized recommendation service, covering data collection, recall, multi‑stage ranking, various CTR and multi‑objective models, reinforcement‑learning based mixing, diversity optimization, and the engineering hurdles overcome to deploy these solutions at massive scale.

CTR predictionDeep LearningReinforcement Learning
0 likes · 17 min read
WeChat "Look" Recommendation System: Architecture, Modeling, and Engineering Challenges
DataFunTalk
DataFunTalk
Jul 17, 2020 · Artificial Intelligence

WeChat "Look" Content Recall Architecture and Deep Learning Techniques

This article details the technical architecture behind WeChat's "Look" content recall, covering content sourcing, profiling, multimodal tagging, knowledge‑graph representations, propensity and target detection, multi‑stage recall pipelines, and a range of deep learning models including sequence, translation, BERT, dual‑tower, hybrid, and graph neural network approaches.

Deep LearningWeChat AIcontent recall
0 likes · 32 min read
WeChat "Look" Content Recall Architecture and Deep Learning Techniques