@Unpublished{daume04cg-bfgs,
  author =       {Hal {Daum\'e III}},
  title =        {Notes on {CG} and {LM-BFGS} Optimization of Logistic Regression},
  note =         {Paper available at \url{http://pub.hal3.name#daume04cg-bfgs}, implementation available at \url{http://hal3.name/megam/}},
  month =     {August},
  keywords = {ml},
  tagline = {These are notes on the <a href="megam/">implementation</a> I have written of conjugate gradient and limited memory BFGS optimization for logistic regression (aka maximum entropy) classifiers. The notes were created because it is actually quite difficult to find good references on efficient implementation of these algorithms, though discussion of them exists everywhere.},
  year =      {2004}
}