Algorithm 3 Condense algorithm. Input: $(\mathbf{\varphi },\mathbf{\lambda },{\Delta }_{\lambda })$, Output: ${\mathbf{\varphi }}^c$ Note: ${\mathbf{\varphi }}^c$ is considered a subset of $\mathbf{\varphi }$
	functionCondense($\mathbf{\varphi },\mathbf{\lambda },{\Delta }_{\lambda }$)
	ind = find ( $\mathbf{\lambda }>(max\mathbf{\lambda }){\Delta }_{\lambda }$ )	▹ Inequality and max are performed component-wise
	${\mathbf{\varphi }}^c=\mathbf{\varphi }(:,\mathbf{ind})$
	return ${\mathbf{\varphi }}^c$
	end function