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

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it used to be based on the distance to the position 0
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Louis Dureuil 2023-06-13 13:25:20 +02:00
parent af57c3c577
commit a20e4d447c
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1 changed files with 5 additions and 3 deletions
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8
milli/src/search/new/ranking_rule_graph/position/mod.rs
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@ -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,