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Table 1 HAPPI database protein interaction data quality grade and coverage.

From: HAPPI: an online database of comprehensive human annotated and predicted protein interactions

Star Grade Quality Description h-score range Interaction Count
1 noisy and uncertain interactions [0, 0.25) 546,136
2 low-confidence interactions [0.25, 0.45) 378,300
3 average-confidence interactions [0.45, 0.75) 142,071
4 decent-confidence interactions [0.75, 0.90) 67,462
5 high-confidence interactions [0.90, 1) 75,494