Table 2.

Average subset size, coverage and precision for the analyzed modularization techniques, in addition to the CORE problem list subset and the full SNOMED CT, which are included as references

Modularization technique	Subset size (SNOMED CT %)	Subset coverage	Subset precision
CORE problem list	1.49%	24.44%	0.27%
Locality (LUM)	0.80%	55.08%	1.14%
Upwards segmentation	17.40%	71.15%	0.07%
S-heuristic	23.76%	78.16%	0.05%
ST-heuristic	50.07%	95.26%	0.03%
IL-heuristic	51.01%	96.26%	0.03%
Full SNOMED CT	100.00%	100.00%	0.02%