Slice-Based Cohesion

Slice-based cohesion measures how tightly the slices of a module’s output variables relate to each other. A slice for an output variable is the set of statements that contributes to computing it.

Tightness

$\text{Tightness}=\frac{S}{\text{length}(M)}$

The ratio of the number of statements common to all slices over the module length.

Overlap

$\text{Overlap}=\frac{1}{V_O}\sum \frac{\text{slice}}{\text{count of variables}}$

Expresses the average ratio of statements common to all slices to the size of each individual slice.

Related

• Data Slice
• Refactoring