Dense Search
map(meaning)
Query: "acoustic levels"
Review: "rattling fan"
0.82
Query: "acoustic levels"
Review: "audio hum"
0.78
Query: "acoustic levels"
Review: "speaker hiss"
0.71
Query: "acoustic levels"
Review: "sound card"
0.65
Sparse Search
BM25(terms)
Query: "HD-9920"
Review: "Model HD-9920"
0.95
Query: "HD-9920"
Review: "Part HD-9920-X"
0.89
Query: "HD-9920"
Review: "Manual HD-9920"
0.81
Query: "HD-9920"
Review: "Filter HD-99"
0.54
Reciprocal Rank Fusion
$$\alpha = 0.50$$
Dense $\leftrightarrow$ Sparse
0.0
0.5
1.0
RRF Aggregator
$$\text{RRF}(d) = \sum_{m \in M} \frac{1}{k + r_m(d)}$$
1
Model HD-9920
0.96
2
rattling fan
0.91
3
Part HD-9920-X
0.88
4
audio hum
0.75
5
Manual HD-9920
0.70