58 Tech
May 24, 2021 · Artificial Intelligence
Tag Extraction for 58 Yellow Pages Posts Using Sequence Labeling and Model Optimization
This article describes a complete solution for extracting and normalizing tags from 58 Yellow Pages service posts, covering candidate word acquisition, sequence‑labeling models such as CRF and BERT‑CRF, hierarchical softmax optimization for massive label spaces, and experimental results on both post content and user reviews.
BERTCRFhierarchical softmax
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