Thank you Xinh. That's what I need. Le mar. 28 juin 2016 à 17:43, Xinh Huynh <xinh.hu...@gmail.com> a écrit :
> Hi Jao, > > Here's one option: > http://spark.apache.org/docs/latest/ml-features.html#stringindexer > "StringIndexer encodes a string column of labels to a column of label > indices. The indices are in [0, numLabels), ordered by label frequencies." > > Xinh > > On Tue, Jun 28, 2016 at 12:29 AM, Jaonary Rabarisoa <jaon...@gmail.com> > wrote: > >> Dear all, >> >> I'm trying to a find a way to transform a DataFrame into a data that is >> more suitable for third party classification algorithm. The DataFrame have >> two columns : "feature" represented by a vector and "label" represented by >> a string. I want the "label" to be a number between [0, number of classes - >> 1]. >> Do you have any ideas to do it efficiently ? >> >> Cheers, >> >> Jao >> > >
