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How Retrieval Works in Modern Ranking Systems | Better HN
How Retrieval Works in Modern Ranking Systems
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(shaped.ai)
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semi_sentient
5mo ago
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semi_sentient
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5mo ago
Retrieval is the stage where a ranking system narrows billions of items down to a few hundred candidates, fast enough for real-time use. It’s the least visible but most constrained layer: latency budgets, freshness, and recall all collide here.
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