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Unverified50% confidenceFactExact time

余弦相似度衡量两个向量之间夹角的余弦值，公式为 cos(θ) = (A · B) / (||A|| × ||B||)

1

Sources

50%

Confidence

Long-term

Relevance

7/14/2026

First Seen

Sources

余弦相似度-1代表语义相反？机器学习面试高频陷阱解析

Related Claims

Unverified一个1536维向量的余弦相似度计算本质上是1536次乘法、1535次加法和若干平方根运算65% similar Unverified余弦相似度值为1表示方向完全一致（夹角0°），值为0表示正交（夹角90°），值为-1表示方向完全相反（夹角180°）65% similar Unverified欧拉公式 e^(iθ) = cos(θ) + i·sin(θ) 揭示了正弦波与复指数函数之间的联系63% similar Unverified贝叶斯定理表达为P(A|B) = P(B|A)·P(A)/P(B)62% similar Partially VerifiedKL散度的数学形式为D_KL(p||q) = ∑ p(x_i) log(p(x_i)/q(x_i))57% similar

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