Table 6

Key criteria and definitions used in the decision blocks of the decision tree in Fig. 4.

Parameter Definition
Large PYBDSF major axis >15′′
Clustered Distance to fourth nearest neighbour <45′′
S “Simple” source: single Gaussian PYBDSF source (and only source in the island)
LR LR > LRth
High source LR LRsource > 10 × LRth
Compact & high LR PYBDSF source major axis <10′′ and LRsource > 10 × LRth
Same as source The ID(s) for the Gaussian component(s) is identical to ID for the source
Any Gaussian LR At least one Gaussian component with LRgauss > LRth
>1 Gaussian LR More than 1 Gaussian with LRgauss > LRth
>1 Gaussian with high LR More than 1 Gaussian with LRgauss > 10 × LRth
Compact Gaussian with high LR Gaussian major axis <10′′ and LRgauss > 10 × LRth

Notes. LRth is the LR threshold corresponding to the intersection of the completeness and reliability. This is a scalar value that varies for each field.

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