Equation 5 · Part 1 · What Actually Happens Between a Query and an Answer in RAG
Symbol r
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 r→Article meaning
The passage around this formula
Reciprocal rank fusion avoids the currency problem by discarding scores altogether and combining rank positions instead. For a document d and a set of ranked result lists R , with r(d) the rank of d in a given list and a smoothing constant k :
Learn the underlying idea
A function assigns an output to each allowed input. The expression f(x) means “apply f to x”.
Open the illustrated functions: inputs become outputs guide →
See this notation across published equations →
Sources cited in the article section
- [9] Reciprocal Rank Fusion Outperforms Condorcet and Individual Rank Learning Methods ↗
- [12] Reciprocal Rank Fusion ↗
These citations provide research context; check each source for the exact claim it supports.