code: protected static DataBuffer createSparseInformationBuffer(int rank){
          int[] flags = new int[rank];
          long[] sparseOffsets = new long[rank];
          int[] hiddenDimension = new int[] {-1};
          return Nd4j.getSparseInfoProvider().createSparseInformation(flags, sparseOffsets,
                  hiddenDimension, rank);
      }
docs: Create a SparseInfo databuffer given rank if of the sparse matrix.
  @param rank
  @return