It makes sure your vectors are all unit length (according to the norm you choose - L2 norm means: make sure each vector satisfies v.dot(v) == 1.0, for example)
This makes sure that when you want to compare vectors to each other, a nice "distance" function is just distance(u, v) = 1 - u.dot(v) -jake On Wed, Jan 13, 2010 at 4:22 PM, Bogdan Vatkov <[email protected]>wrote: > What is the practical meaning of --norm parameter in the text-to-vector ( > http://cwiki.apache.org/MAHOUT/creating-vectors-from-text.html) process? > > Best regards, > Bogdan >
