Baidu Geek Talk
Nov 29, 2021 · Artificial Intelligence
Pretrained Models for First-Stage Information Retrieval: A Comprehensive Review
This comprehensive review by Dr. Fan Yixing surveys how pretrained language models have transformed first‑stage information retrieval, tracing the shift from traditional term‑based methods to neural sparse, dense, and hybrid approaches, and discussing key challenges such as hard‑negative mining, joint indexing‑representation learning, and generative‑discriminative training.
Hybrid RetrievalNeural IRSparse Retrieval
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