code: public INDArray getWordVectorMatrixNormalized(String word) {
          INDArray r = getWordVectorMatrix(word);
          if (r == null)
              return null;
  
          return r.div(Nd4j.getBlasWrapper().nrm2(r));
      }
docs: Returns the word vector divided by the norm2 of the array
  @param word the word to get the matrix for
  @return the looked up matrix