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Equation 13 · Part 1 · Retrieval Is an Evidence System, Not a Memory

Symbol Z_k

Zk(x)\mathcal{Z}_k(x)
Zk\mathcal{Z}_k

What this part means

ZkZ_k 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

ZkZ_k is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

The passage around this formula

Suppose retrieval succeeds. The relevant passage is in Zk(x)\mathcal{Z}_k(x) , correctly chunked, in the prompt. The system may still fail, for a reason that has nothing to do with retrieval quality.

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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

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