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Contingency table of co-occurrences between entities X = x and Y = y. This is the basic structure for all scoring schemes. cx,y is the count of the co-occurrence of these entities. cx,. is the count of the x with all the entities of Y type (e.g., Molecular function). Conversely, c.,y is the count of y with all the entities of X type (e.g., taxonomy).
| Y = y | ||||
|---|---|---|---|---|
| X = x | Yes | No | Total | |
| Yes | cx ,y | cx ,0 | cx ,. | |
| No | c0 ,y | c0 ,0 | c0 ,. | |
| Total | c. ,y | c. ,0 | c. ,. | |
