def initialize(self):
if self._sdrClassifier is None:<EOL><INDENT>self._sdrClassifier = SDRClassifierFactory.create(<EOL>steps=self.stepsList,<EOL>alpha=self.alpha,<EOL>verbosity=self.verbosity,<EOL>implementation=self.implementation,<EOL>)<EOL><DEDENT>
Overrides :meth:`nupic.bindings.regions.PyRegion.PyRegion.initialize`.

Is called once by NuPIC before the first call to compute().
Initializes self._sdrClassifier if it is not already initialized.