Great. Btw, I changed the code quite a bit in my previous ports to use ByteBuffers. That made it much more portable and considerably faster than the naive port I started with.
I would suggest similar efforts be made for this code. On Wed, Nov 2, 2011 at 8:01 AM, Grant Ingersoll (Commented) (JIRA) < j...@apache.org> wrote: > > [ > https://issues.apache.org/jira/browse/MAHOUT-862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13142200#comment-13142200] > > Grant Ingersoll commented on MAHOUT-862: > ---------------------------------------- > > Committed revision 1196616. > > I'll leave open for a day or two so others can review. > > > MurmurHash 3.0 > > -------------- > > > > Key: MAHOUT-862 > > URL: https://issues.apache.org/jira/browse/MAHOUT-862 > > Project: Mahout > > Issue Type: Improvement > > Reporter: Grant Ingersoll > > Assignee: Grant Ingersoll > > Priority: Minor > > Attachments: MAHOUT-862.patch > > > > > > Yonik has ported an implementation of MurmurHash 3.0 and put it in the > public domain: > http://www.lucidimagination.com/blog/2011/09/15/murmurhash3-for-java/ > > It's a port of https://sites.google.com/site/murmurhash/ which says: > > {quote} > > (I reserve the right to tweak the constants after people have had a > chance to bang on it). Murmur3 has better performance than MurmurHash2, no > repetition flaw, comes in 32/64/128-bit versions for both x86 and x64 > platforms, and the 128-bit x64 version is blazing fast - over 5 gigabytes > per second on my 3 gigahertz Core 2. > > In addition, the library of test code that I use to test MurmurHash > (called SMHasher) has been released - it's still rough (and will only > compile under VC++ at the moment), but it contains everything needed to > verify hash functions of arbitrary output bit-lengths. > > Murmur3 and all future versions will be hosted on Google Code here - > http://code.google.com/p/smhasher/ - you can access the codebase via the > 'Source' tab at the top. > > {quote} > > See also http://code.google.com/p/smhasher/ > > We should add support for it and hook into MinHash > > -- > This message is automatically generated by JIRA. > If you think it was sent incorrectly, please contact your JIRA > administrators: > https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa > For more information on JIRA, see: http://www.atlassian.com/software/jira > > >
