Table 1.

A heuristic study to choose color and angle thresholds.

	$\mathbf{FDEB}$				$\mathbf{FFTEB}$				$\mathbf{MLSEB}$
	U.S. Airlines		U.S. Migrations		U.S. Airlines		U.S. Migrations		U.S. Airlines		U.S. Migrations
Configuration	$\mathbf{H}\mathbf{\left(}\mathbf{W}\mathbf{\right)}$	$\mathit{\lambda }$	$\mathbf{H}\mathbf{\left(}\mathbf{W}\mathbf{\right)}$	$\mathit{\lambda }$	$\mathbf{H}\mathbf{\left(}\mathbf{W}\mathbf{\right)}$	$\mathit{\lambda }$	$\mathbf{H}\mathbf{\left(}\mathbf{W}\mathbf{\right)}$	$\mathit{\lambda }$	$\mathbf{H}\mathbf{\left(}\mathbf{W}\mathbf{\right)}$	$\mathit{\lambda }$	$\mathbf{H}\mathbf{\left(}\mathbf{W}\mathbf{\right)}$	$\mathit{\lambda }$
$c100\_a45$	0.661	0.795	0.791	0.669	0.225	0.437	0.457	0.268	0.486	0.584	0.349	0.258
$c100\_a90$	0.751	0.817	0.856	0.688	0.319	0.554	0.508	0.359	0.607	0.679	0.380	0.307
$c100\_a135$	0.793	0.830	0.870	0.699	0.343	0.575	0.518	0.389	0.646	0.681	0.391	0.339
$c120\_a45$	0.838	0.944	0.846	0.671	0.326	0.564	0.527	0.336	0.594	0.742	0.469	0.288
$c120\_a90$	0.907	0.972	0.888	0.705	0.450	0.689	0.577	0.397	0.710	0.810	0.513	0.346
$c120\_a135$	0.945	0.975	0.893	0.713	0.485	0.709	0.588	0.421	0.753	0.827	0.529	0.363
$c150\_a45$	0.893	0.988	0.873	0.763	0.642	0.770	0.681	0.459	0.815	0.947	0.680	0.398
$c150\_a90$	0.926	0.997	0.911	0.786	0.819	0.867	0.723	0.521	0.889	0.982	0.718	0.458
$c150\_a135$	0.961	0.997	0.928	0.792	0.864	0.877	0.740	0.558	0.925	0.985	0.726	0.467
$c170\_a45$	0.909	0.996	0.883	0.800	0.735	0.911	0.740	0.582	0.845	0.966	0.702	0.673
$c170\_a90$	0.934	0.998	0.940	0.822	0.848	0.973	0.782	0.691	0.902	0.988	0.746	0.702
$c170\_a135$	0.965	0.998	0.952	0.831	0.894	0.978	0.800	0.729	0.934	0.990	0.760	0.719
$c190\_a45$	0.922	0.999	0.938	0.809	0.759	0.937	0.857	0.692	0.858	0.977	0.726	0.682
$c190\_a90$	0.945	0.999	0.954	0.837	0.870	0.988	0.889	0.776	0.905	0.995	0.761	0.703
$c190\_a135$	0.976	0.999	0.967	0.849	0.920	0.995	0.901	0.792	0.936	0.995	0.789	0.718