Embedding Based Recall: Practice,
Progress and Perspectives
Zheng Liu, Jianxun Lian, Xing Xie
Social Computing Group, MSRA
Aug 15th, 2021
Reinforced Anchor Knowledge Graph Generation for News Recommendation Reasoning, Liu et. al.
KDD 2021Outline
o Overview
o Multi-Stage Pipeline
o EBR: Pros and Cons
o Embedding learning algorithms
o Negative Augmentation
o Hard Negative Sampling
o Diversified representation
o Training as knowledge distillation
o Things beyond learning algorithms
o Efficiency issues
o Combo of sparse and denseOverview: Multi-Stage Pipeline
L1 Stage
(Recall)L2 Stage
(Rank)L3 Stage
(Re-rank)
0~1
× 106~9× 101~3 × 10
o Rank: high-precision, KPI-
oriented
o Recall: fast, accurate, comprehensive Overview: Multi-Stage Pipeline
Fast, Accurate
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