Equation 13 · Part 1 · Retrieval Is an Evidence System, Not a Memory
Symbol Z_k
What this part means
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
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 Z_k→Article meaning
The passage around this formula
Suppose retrieval succeeds. The relevant passage is in , correctly chunked, in the prompt. The system may still fail, for a reason that has nothing to do with retrieval quality.
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 →
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Sources cited in the article section
- [11] Lost in the Middle: How Language Models Use Long Contexts ↗
- [12] Large Language Models Can Be Easily Distracted by Irrelevant Context ↗
- [18] Benchmarking Large Language Models in Retrieval-Augmented Generation ↗
These citations provide research context; check each source for the exact claim it supports.