Equation 15 · Part 2 · The Hardest Unsolved Problems in AI Agent Evaluation and Reliability
Symbol i
What this part means
i appears in the bound of this sum. The bound states where the repeated operation starts, ends, or which values it includes.
Its job in the formula
i appears in the bound of this sum. The bound states where the repeated operation starts, ends, or which values it includes.
Full expression→Symbol i→Article meaning
The passage around this formula
and contrast it with a severity-weighted version, . where scales each failure by how costly it actually was. Two agents can share an identical of, say, ninety-five percent, while one of them fails harmlessly - an unhelpful but reversible answer - and the other fails catastrophically - an irreversible transaction, a deleted repository, a wrong medical dosage recommendation - on that same five percent. No standard agent benchmark publishes R , because assigning a defensible requires a judgment about real-world consequence that a replayable, sandboxed task suite is not built to carry, and because the tasks that would carry the highest weights are, not…
Learn the underlying idea
A variable is a named place for a value. Its letter is a local label: x can mean position in one formula and a data point in another.
Open the illustrated variables: a letter stands for a value guide →
See this notation across published equations →
Sources cited in the article section
These citations provide research context; check each source for the exact claim it supports.