Expand description
CombSUM / CombMNZ score fusion.
Each list is min-max normalized. CombSUM sums those values; a missing list contributes 0. CombMNZ multiplies the sum by the number of lists that retrieved the id.
Fox, Shaw, Combination of Multiple Searches, TREC-2, 1993. doi:10.6028/nist.sp.500-215.vt Lee, Analyses of multiple evidence combination, SIGIR 1997. doi:10.1145/258525.258587 Montague, Aslam, Relevance score normalization for metasearch, CIKM 2001. doi:10.1145/502585.502657
Functions§
- combmnz_
merge - Merge scored lists by CombMNZ. Ties break by first-seen id order.
- combsum_
merge - Merge scored lists by CombSUM. Ties break by first-seen id order.
Type Aliases§
- Scored
Ballot - One scored list. The f64 is the raw score; order is first-seen only.