If you are referring to the non-distributed similarity function, it is quite
easy: implement UserSimilarity or ItemSimilarity and use that as your
similarity function. How you implement is up to you. If you say more about
what you need to do, maybe people can suggest the right logic.
On Sat, Sep 3
https://github.com/LanceNorskog/LSH-Hadoop/blob/master/extras/mahout/src/working/KabshRotation.java
This is an implementation from an article on Wikipedia, which never lies.
http://en.wikipedia.org/wiki/Kabsch_algorithm
The rotation outputs are way too far off. It has 3 points to rotate 2
dimens
