杂音3 https://code.google.com/p/smhasher/
featurehash的Python项目详细描述
- 杂音哈希是一个快速哈希函数：
>>> import featurehash >>> featurehash.hash("abc") #return the hashcode of the string "abc" -1277324294 >>> featurehash.transform_feature("abc") #return the code and the sign of hashcode;the code is equal to "hashcode mod 8388608(2^23) + 1" (2255879, -1.0) >>> featurehash.transform_features(["abc","edf","efd","123","efd"]) #pass a sequence to the function,return the sorted unique feature code. [124, 2255879, 3759816, 8023169] >>> featurehash.transform_features(["abc","edf","efd","123","efd"],8388607) #pass a sequence and upper_bound;upper_bound default 8388608(2^23) [124, 2256031, 3760024, 8023393] >>> featurehash.transform_features(["abc","edf","efd","123","efd"],8388607,0) #pass a sequence , upper_bound and min value; min value default 1; [123, 2256030, 3760023, 8023392] >>> featurehash.transform_features(["abc","edf","efd","123","efd"],8388607,1,1) #pass a sequence , upper_bound, min value and seed; seed value default 0;the same application must must the same seed,ensure the consistent value. [124, 661165, 3231265, 8317658]
zsp windows，linux python库
欢迎加入QQ群-->： 979659372
