I believe you are referring to recommenders specifically. It used to allow string IDs but it's a lot of overhead. Most applications already use integer identifiers for these entities -- and those that don't can use the support in the library for building a mapping from strings to ints.
Vectors naturally have integer dimensions of course, but can in some cases label the dimensions with strings. The answer depends on what you are referring to but think it's going to be integers for the most part, since the caller can map anything to integers without much trouble. On Fri, Jul 9, 2010 at 11:04 AM, Kris Jack <[email protected]> wrote: > Hi everyone, > > In mahout, I get the impression that most of the data structures require > item/element ids to be longs or ints. As Mahout is designed to scale up to > huge data sets, would it be useful to also allow strings as ids, such as > universally unique identifiers? Any comments? > > Regards, > Kris >
