To cite Kernel Factory use:

  Ballings, M., & Van den Poel, D. (2012). Kernel Factory: An ensemble
  of Kernel Machines. Expert Systems With Applications. Forthcoming.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Kernel Factory: An Ensemble of Kernel Machines},
    journal = {Expert Systems With Applications},
    volume = {Forthcoming},
    year = {2013},
    author = {{Michel Ballings} and {Dirk Van den Poel}},
  }