Unverified50% confidenceFactExact time
Reddit、TikTok等社交平台的推荐算法普遍以参与度（Engagement）为核心优化目标，包括评论数、分享数、停留时长等指标
1
Sources
50%
Confidence
Long-term
Relevance
7/11/2026
First Seen
Sources
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