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Hash函数 - 北京大学计算机科学技术研究所

Hash函数 - 北京大学计算机科学技术研究所

Hash函数 - 北京大学计算机科学技术研究所

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4.2.2 ‘Åš«.e¯K4.1¤õVǽn4.3`²µé?¿‰½žEx§ôÂö OŽ,˜‡žEx ′ ≠ xkHash(x) = Hash(x ′ )§¦Œ±‘Å)Q‡žEx 1 , . . . , x Q ≠ x§éz‡žEOŽéAHashŠ§XJuy,‡žEx i kHash(x i ) = Hash(x)¦Ò¤õœd½n4.3·‚¤õVÇ ɛ = 1 − (1 − 1/M) Q "w,ÁêâþQŒ§¤õVÇpHashŠŒU‡êM§¤õVÇ p"T {vk|^Hash¼ê?Û[!§ bHash(Jþ!©Ù§=Ramdom Oracleb"

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