Table 1.

Pharmacophore model evaluation based on Gunner-Henry (GH) scoring method.

S. no	Parameters	Ph4 model
1	Number of compounds in database (D)	900
2	Number of active in database (A)	48
3	Total Hits (Ht)	50
4	Active Hits (Ha)	40
5	% Yield of actives[(Ha/Ht) × 100]	80
6	% Ratio of actives [(Ha/A) × 100]	83
7	Enrichment factor (E) [(Ha × D)/(Ht × A)]	15
8	False negatives [A − Ha]	8
9	False positives [Ht − Ha]	10
10	GH score	0.79