searchengines-web/MeiliSearch
searchengines-web/MeiliSearch
1
0
Fork 0
mirror of https://github.com/meilisearch/MeiliSearch synced 2024-06-30 08:12:55 +02:00
Code Issues Releases Wiki Activity

Position now takes into account the distance to the position of the word in the query

Browse Source 
it used to be based on the distance to the position 0
This commit is contained in:
Louis Dureuil 2023-06-13 13:25:20 +02:00
parent af57c3c577
commit a20e4d447c
No known key found for this signature in database
1 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
milli/src/search/new/ranking_rule_graph/position/mod.rs
View File

@ -77,6 +77,8 @@ impl RankingRuleGraphTrait for PositionGraph {
let mut positions_for_costs = FxHashMap::<u32, Vec<u16>>::default();
for position in all_positions {
// FIXME: bucketed position???
let distance = position.abs_diff(*term.positions.start());
let cost = {
let mut cost = 0;
for i in 0..term.term_ids.len() {
@ -84,7 +86,7 @@ impl RankingRuleGraphTrait for PositionGraph {
// Because if two words are in the same bucketed position (e.g. 32) and consecutive,
// then their position cost will be 32+32=64, but an ngram of these two words at the
// same position will have a cost of 32+32+1=65
cost += cost_from_position(position as u32 + i as u32);
cost += cost_from_distance(distance as u32 + i as u32);
}
cost
};
@ -104,8 +106,8 @@ impl RankingRuleGraphTrait for PositionGraph {
}
}
fn cost_from_position(sum_positions: u32) -> u32 {
match sum_positions {
fn cost_from_distance(distance: u32) -> u32 {
match distance {
0 => 0,
1 => 1,
2..=4 => 2,