Unverified50% confidenceFactExact time
潜在语义分析（LSA）诞生于1988年，通过对词-文档矩阵（通常经TF-IDF加权）进行SVD并保留前k个奇异值，将词和文档映射到k维语义空间
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Long-term
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8/28/2026
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