clustering_metrics.ext module

class clustering_metrics.ext.PHashCombiner

Bases: object

Use polynomial hashing to reduce a vector of hashes

combine()

Combine a list of integer hashes

class clustering_metrics.ext.VarlenHash

Bases: object

Create a hash function of arbitrary output length

clustering_metrics.ext.hash_builtin_128()

A better hash function based on Python’s built-in hash()

Note: vanilla hash() is a terrible hash function.

clustering_metrics.ext.hash_builtin_64()

A better hash function based on Python’s built-in hash()

Note: the built-in hash() is a terrible hash function. For some examples, see http://michaelnielsen.org/blog/consistent-hashing/

clustering_metrics.ext.hash_combine_boost()

Hash two 64-bit integers together Uses boost::hash_combine algorithm

clustering_metrics.ext.hash_combine_boost_64()

Hash two 64-bit integers together Uses boost::hash_combine algorithm

clustering_metrics.ext.hash_combine_murmur()

Hash two 64-bit integers together Uses a Murmur-inspired hash function

clustering_metrics.ext.hash_combine_murmur_64()

Hash two 64-bit integers together Uses a Murmur-inspired hash function

clustering_metrics.ext.hash_md5_128()

Return value is 128 bits

clustering_metrics.ext.hash_md5_64()

Return value is 128 bits

clustering_metrics.ext.hashable()

clustering_metrics.ext.long2int()

Lossily map a long type to the range of int

Parameters:num (long) – input long variable Returns:input mapped to int range Return type:int