def select_version(self, version):
        raise NotImplementedError("Subclass must implement select_version")
Returns the index of active initial features based on bins in each
dataset/ETHPy150Open VisTrails/VisTrails/vistrails/core/application.py/VistrailsApplicationInterface.select_version--crossover with--dataset/ETHPy150Open rlpy/rlpy/rlpy/Representations/Representation.py/Representation.activeInitialFeatures