Validation of EUHFORIA cone and spheromak coronal mass ejection models

Open Access

Table 4.

Skill scores based on Verbeke et al. (2019b).

Skill score	Equation	Perfect score
Probability of detection (POD)	$\frac{H}{H + M}$ $\frac{H}{H + M}$	1
Success ratio (SR)	$\frac{H}{H + FA}$ $\frac{H}{H + \mathrm{FA}}$	1
Bias score (BS)	$\frac{H + FA}{H + M}$ $\frac{H + \mathrm{FA}}{H + M}$	1
Critical success index (CSI)	$\frac{H}{H + M + FA}$ $\frac{H}{H + M + \mathrm{FA}}$	1
Accuracy (Ac)	$\frac{H + C R}{Total}$ $\frac{H + CR}{\mathrm{Total}}$	1
Probability of false detection (POFD)	$\frac{FA}{H + FA}$ $\frac{\mathrm{FA}}{H + \mathrm{FA}}$	0
Hanssen and Kuipers discriminant	HK = POD − POFD	1

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