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The EM operators |
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| EM operation |
Definition |
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| Overlap (x ○ y) |
x and y overlap if they have a part in common. |
| Disjoint (x ι y) |
x and y are disjoint if they share no parts in common. |
| Binary product (x . y) |
The parts that x and y share in common. |
| Difference (x - y) |
The largest portion of x which has no part in common with y. |
| Binary sum (x + y) |
The set consisting of individuals x and y. |
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In each case x and y refer to two wholes. The first two operators are Boolean and pertain to whether two wholes share any parts in common; whereas the remainder return either the parts, or, in the case of binary sum, the wholes, that satisfy the operation. | |
Eilbeck et al. Genome Biology 2005 6:R44 doi:10.1186/gb-2005-6-5-r44 |
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