mahout-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Jake Mannix <jake.man...@gmail.com>
Subject Re: recommendations
Date Mon, 30 Aug 2010 17:34:49 GMT
On Mon, Aug 30, 2010 at 9:44 AM, Ted Dunning <ted.dunning@gmail.com> wrote:

> Metaphorically speaking if user x search term is A and user x item is B,
> then transpose(B) * B is item x item, transpose(A) * B) is search term x
> search term and transpose(B)*A is item x search-term.
>

And in fact, this is one map-reduce job in Mahout, as A.times(B) for
DistributedRowMatrices A, B performs exactly transpose(A) * B.

  -jake

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message