def METHOD_NAME(self):
    tensorlib, _ = get_backend()
    self.deltas_up = tensorlib.astensor(self._deltas_up)
    self.deltas_dn = tensorlib.astensor(self._deltas_dn)
    self.broadcast_helper = tensorlib.astensor(self._broadcast_helper)
    self.bases_up = tensorlib.einsum(
        'sa,shb->shab', tensorlib.ones(self.alphasets_shape), self.deltas_up
    )
    self.bases_dn = tensorlib.einsum(
        'sa,shb->shab', tensorlib.ones(self.alphasets_shape), self.deltas_dn
    )
    self.mask_on = tensorlib.ones(self.alphasets_shape)
    self.mask_off = tensorlib.zeros(self.alphasets_shape)