def _vector_second_selectivity(self, d):
    '\n        Return the magnitude of the vector_sum() of all bins excluding the\n        maximum one, divided by the sum_value().\n        see _vector_selectivity() for further details\n        '
    k = d.max_value_bin()
    d.pop(k)
    s = self.vector_sum(d)[0]
    d.restore(k)
    return self._safe_divide(s, sum(d.values()))
Return the magnitude of the vector_sum() of all bins excluding the
maximum one, divided by the sum_value().
see _vector_selectivity() for further details
def _vector_second_selectivity(self, d):
    '\n        Return the magnitude of the vector_sum() of all bins excluding the\n        maximum one, divided by the sum_value().\n        see _vector_selectivity() for further details\n        '
    k = d.max_value_bin()
    d.pop(k)
    s = self.vector_sum(d)[0]
    d.restore(k)
    return self._safe_divide(s, sum(d.values()))