Equation 13 · Part 1 · How to Evaluate Codex Beyond SWE-bench and Vendor Scores
Symbol x_ir
What this part means
r is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Its job in the formula
r is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Full expression→Symbol x_ir→Article meaning
The passage around this formula
where r indexes repositories and task characteristics. The estimate can then expose between-repository variance rather than hiding it inside a global mean. Bootstrap intervals should resample at relevant task-family or repository levels when generalization across those units is the target.
Learn the underlying idea
A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.
Open the illustrated subscripts: which member of a family? guide →
See this notation across published equations →
The article lists its research sources here.