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Ignore documents which are not part of the candidates when exploring with A*

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Kerollmops 2020-06-24 15:06:45 +02:00
parent 1c7a9a4132
commit 7e16afbdce
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GPG Key ID: 92ADA4E935E71FA4
1 changed files with 11 additions and 2 deletions
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13
src/lib.rs
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@ -182,7 +182,7 @@ impl Index {
let mut union_cache = HashMap::new();
let mut intersect_cache = HashMap::new();
// Returns `true` if there is documents in common between the two words and positions given.
let mut contains_documents = |(lword, lpos), (rword, rpos), union_cache: &mut HashMap<_, _>| {
let mut contains_documents = |(lword, lpos), (rword, rpos), union_cache: &mut HashMap<_, _>, words_attributes_docids: &HashMap<_, _>| {
let proximity = best_proximity::positions_proximity(lpos, rpos);
if proximity == 0 { return false }
@ -197,13 +197,22 @@ impl Index {
let lunion_docids = union_cache.get(&(lword, lpos)).unwrap();
let runion_docids = union_cache.get(&(rword, rpos)).unwrap();
let lattr = lpos / 1000;
let rattr = rpos / 1000;
if lattr == rattr {
if let Some(docids) = words_attributes_docids.get(&lattr) {
if lunion_docids.is_disjoint(&docids) { return false }
if runion_docids.is_disjoint(&docids) { return false }
}
}
!lunion_docids.is_disjoint(&runion_docids)
})
};
let mut documents = Vec::new();
let mut iter = BestProximity::new(positions);
while let Some((proximity, mut positions)) = iter.next(|l, r| contains_documents(l, r, &mut union_cache)) {
while let Some((proximity, mut positions)) = iter.next(|l, r| contains_documents(l, r, &mut union_cache, &words_attributes_docids)) {
positions.sort_unstable();
let same_prox_before = Instant::now();