I agree with Till, the data types are different here so you need a custom string vector.
The Vector abstraction in FlinkML is designed with numerical vectors in mind. On Mon, Jan 18, 2016 at 2:33 PM, Till Rohrmann <trohrm...@apache.org> wrote: > Hi Hilmi, > > I think in your case it makes sense to define a custom vector of strings. > The easiest implementation could be an Array[String] or List[String]. > > The reason why it does not make so much sense to make Vector and > DenseVector > generic is that these types are algebraic data types. How would you define > algebraic operations such as scalar product, outer product, multiplication, > etc. on a vector of strings? Then you would have to provide different > implementations for the different type parameters. > > Cheers, > Till > > > On Mon, Jan 18, 2016 at 1:40 PM, Hilmi Yildirim <hilmi.yildi...@dfki.de> > wrote: > > > Hi, > > how I explained it in a previous E-Mail, I need a LabeledVector where the > > label is also a vector. After we discussed this issue, I created a new > > class named LabeledSequenceVector with the labels as a Vector. In my use > > case, I want to train a POS-Tagger system, so the "vector" is a vector of > > strings and the "labels" is also a vector of strings. If I use the Flink > > Vector/DenseVector implementation then the vector does only have double > > values but I need String values. > > > > Best Regards, > > Hilmi > > > > > > Am 18.01.2016 um 13:33 schrieb Chiwan Park: > > > >> Hi Hilmi, > >> > >> In NLP, which types are used for vector values? I think we can cover > >> typical case using double values. > >> > >> On Jan 18, 2016, at 9:19 PM, Hilmi Yildirim <hilmi.yildi...@dfki.de> > >>> wrote: > >>> > >>> Hi, > >>> the Vector and DenseVector implementations of Flink ML only allow > Double > >>> values. But there are cases where the values are not Doubles, e.g. in > NLP. > >>> Does it make sense to make the implementations generic, i.e. Vector[T] > and > >>> DenseVector[T]? > >>> > >>> Best Regards, > >>> Hilmi > >>> > >>> -- > >>> ================================================================== > >>> Hilmi Yildirim, M.Sc. > >>> Researcher > >>> > >>> DFKI GmbH > >>> Intelligente Analytik für Massendaten > >>> DFKI Projektbüro Berlin > >>> Alt-Moabit 91c > >>> D-10559 Berlin > >>> Phone: +49 30 23895 1814 > >>> > >>> E-Mail: hilmi.yildi...@dfki.de > >>> > >>> ------------------------------------------------------------- > >>> Deutsches Forschungszentrum fuer Kuenstliche Intelligenz GmbH > >>> Firmensitz: Trippstadter Strasse 122, D-67663 Kaiserslautern > >>> > >>> Geschaeftsfuehrung: > >>> Prof. Dr. Dr. h.c. mult. Wolfgang Wahlster (Vorsitzender) > >>> Dr. Walter Olthoff > >>> > >>> Vorsitzender des Aufsichtsrats: > >>> Prof. Dr. h.c. Hans A. Aukes > >>> > >>> Amtsgericht Kaiserslautern, HRB 2313 > >>> ------------------------------------------------------------- > >>> > >>> Regards, > >> Chiwan Park > >> > >> >
