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feat: Support one word has multi-word alternatives

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This commit is contained in:
Clément Renault 2019-06-17 16:01:31 +02:00
parent d2bd99cc2a
commit 59fafb8b30
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GPG Key ID: 0151CDAB43460DAE
2 changed files with 206 additions and 32 deletions
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8
meilidb-core/src/lib.rs
View File

@ -10,7 +10,7 @@ pub mod criterion;
use std::fmt;
use std::sync::Arc;
use rayon::slice::ParallelSliceMut;
use sdset::SetBuf;
use serde::{Serialize, Deserialize};
use slice_group_by::GroupBy;
use zerocopy::{AsBytes, FromBytes};
@ -229,12 +229,10 @@ impl fmt::Debug for RawDocument {
}
}
pub fn raw_documents_from_matches(mut matches: Vec<(DocumentId, Match)>) -> Vec<RawDocument> {
let mut docs_ranges = Vec::<(DocumentId, Range)>::new();
pub fn raw_documents_from_matches(matches: SetBuf<(DocumentId, Match)>) -> Vec<RawDocument> {
let mut docs_ranges = Vec::<(_, Range)>::new();
let mut matches2 = Matches::with_capacity(matches.len());
matches.par_sort_unstable();
for group in matches.linear_group_by(|(a, _), (b, _)| a == b) {
let id = group[0].0;
let start = docs_ranges.last().map(|(_, r)| r.end).unwrap_or(0);

226
meilidb-core/src/query_builder.rs
View File

@ -4,12 +4,13 @@ use std::rc::Rc;
use std::time::Instant;
use std::{cmp, mem};
use rayon::slice::ParallelSliceMut;
use slice_group_by::GroupByMut;
use meilidb_tokenizer::{is_cjk, split_query_string};
use hashbrown::{HashMap, HashSet};
use fst::{Streamer, IntoStreamer};
use hashbrown::{HashMap, HashSet};
use log::info;
use meilidb_tokenizer::{is_cjk, split_query_string};
use rayon::slice::ParallelSliceMut;
use sdset::SetBuf;
use slice_group_by::GroupByMut;
use crate::automaton::{DfaExt, AutomatonExt, build_dfa, build_prefix_dfa};
use crate::distinct_map::{DistinctMap, BufferedDistinctMap};
@ -46,12 +47,11 @@ fn generate_automatons<S: Store>(query: &str, store: &S) -> Result<Vec<(usize, D
}
automatons.push((index, query_word, lev));
automatons.sort_unstable_by(|a, b| (a.0, &a.1).cmp(&(b.0, &b.1)));
automatons.dedup_by(|a, b| (a.0, &a.1) == (b.0, &b.1));
index += 1;
}
automatons.sort_unstable_by(|a, b| (a.0, &a.1).cmp(&(b.0, &b.1)));
automatons.dedup_by(|a, b| (a.0, &a.1) == (b.0, &b.1));
let automatons = automatons.into_iter().map(|(i, _, a)| (i, a)).collect();
Ok(automatons)
@ -83,7 +83,7 @@ impl<'c, S, FI> QueryBuilder<'c, S, FI>
store: self.store,
criteria: self.criteria,
searchable_attrs: self.searchable_attrs,
filter: Some(function)
filter: Some(function),
}
}
@ -147,8 +147,22 @@ where S: Store,
}
}
matches.par_sort_unstable();
for document_matches in matches.linear_group_by_mut(|(a, _), (b, _)| a == b) {
let mut offset = 0;
for query_indexes in document_matches.linear_group_by_mut(|(_, a), (_, b)| a.query_index == b.query_index) {
let word_index = query_indexes[0].1.word_index - offset as u16;
for (_, match_) in query_indexes.iter_mut() {
match_.word_index = word_index;
}
offset += query_indexes.len() - 1;
}
}
let total_matches = matches.len();
let raw_documents = raw_documents_from_matches(matches);
let padded_matches = SetBuf::from_dirty(matches);
let raw_documents = raw_documents_from_matches(padded_matches);
info!("{} total documents to classify", raw_documents.len());
info!("{} total matches to classify", total_matches);
@ -455,6 +469,16 @@ mod tests {
}
}
const fn doc_char_index(document_id: u64, word_index: u16, char_index: u16) -> DocIndex {
DocIndex {
document_id: DocumentId(document_id),
attribute: 0,
word_index,
char_index,
char_length: 0,
}
}
#[test]
fn simple_synonyms() {
let mut store = InMemorySetStore::from_iter(vec![
@ -652,16 +676,17 @@ mod tests {
assert_matches!(iter.next(), None);
}
/// Unique word has multi-word synonyms
#[test]
fn multiword_synonyms() {
/// Unique word has multi-word synonyms
fn unique_to_multiword_synonyms() {
let mut store = InMemorySetStore::from_iter(vec![
("new", &[doc_index(0, 0)][..]),
("york", &[doc_index(0, 1)][..]),
("subway", &[doc_index(0, 2)][..]),
("new", &[doc_char_index(0, 0, 0)][..]),
("york", &[doc_char_index(0, 1, 1)][..]),
("city", &[doc_char_index(0, 2, 2)][..]),
("subway", &[doc_char_index(0, 3, 3)][..]),
("NY", &[doc_index(1, 0)][..]),
("subway", &[doc_index(1, 1)][..]),
("NY", &[doc_char_index(1, 0, 0)][..]),
("subway", &[doc_char_index(1, 1, 1)][..]),
]);
store.add_synonym("NY", SetBuf::from_dirty(vec!["NYC", "new york", "new york city"]));
@ -671,16 +696,77 @@ mod tests {
let results = builder.query("NY subway", 0..20).unwrap();
let mut iter = results.into_iter();
assert_matches!(iter.next(), Some(Document { id: DocumentId(0), matches }) => {
let mut iter = matches.into_iter();
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // new = NY
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // york = NY
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // city = NY
assert_matches!(iter.next(), Some(Match { query_index: 1, word_index: 1, .. })); // subway
assert_matches!(iter.next(), None); // position rewritten ^
});
assert_matches!(iter.next(), Some(Document { id: DocumentId(1), matches }) => {
let mut iter = matches.into_iter();
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // NY
assert_matches!(iter.next(), Some(Match { query_index: 1, word_index: 1, .. })); // subway
assert_matches!(iter.next(), None);
});
assert_matches!(iter.next(), None);
let builder = QueryBuilder::new(&store);
let results = builder.query("NYC subway", 0..20).unwrap();
let mut iter = results.into_iter();
assert_matches!(iter.next(), Some(Document { id: DocumentId(0), matches }) => {
let mut iter = matches.into_iter();
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // new
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 1, .. })); // york
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // new = NY
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // york = NY
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // city = NY
assert_matches!(iter.next(), Some(Match { query_index: 1, word_index: 1, .. })); // subway
assert_matches!(iter.next(), None); // position rewritten ^
});
assert_matches!(iter.next(), Some(Document { id: DocumentId(1), matches }) => {
let mut iter = matches.into_iter();
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // NY
assert_matches!(iter.next(), Some(Match { query_index: 1, word_index: 1, .. })); // subway
assert_matches!(iter.next(), None);
});
assert_matches!(iter.next(), None);
}
#[test]
/// Unique word has multi-word synonyms
fn harder_unique_to_multiword_synonyms() {
let mut store = InMemorySetStore::from_iter(vec![
("new", &[doc_char_index(0, 0, 0)][..]),
("york", &[doc_char_index(0, 1, 1)][..]),
("city", &[doc_char_index(0, 2, 2)][..]),
("yellow", &[doc_char_index(0, 3, 3)][..]),
("subway", &[doc_char_index(0, 4, 4)][..]),
("broken", &[doc_char_index(0, 5, 5)][..]),
("NY", &[doc_char_index(1, 0, 0)][..]),
("blue", &[doc_char_index(1, 1, 1)][..]),
("subway", &[doc_char_index(1, 2, 2)][..]),
]);
store.add_synonym("NY", SetBuf::from_dirty(vec!["NYC", "new york", "new york city"]));
store.add_synonym("NYC", SetBuf::from_dirty(vec!["NY", "new york", "new york city"]));
let builder = QueryBuilder::new(&store);
let results = builder.query("NY subway", 0..20).unwrap();
let mut iter = results.into_iter();
assert_matches!(iter.next(), Some(Document { id: DocumentId(0), matches }) => {
let mut iter = matches.into_iter();
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // new = NY
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // york = NY
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // city = NY
assert_matches!(iter.next(), Some(Match { query_index: 1, word_index: 2, .. })); // subway
assert_matches!(iter.next(), None); // position rewritten ^
});
assert_matches!(iter.next(), Some(Document { id: DocumentId(1), matches }) => {
let mut iter = matches.into_iter();
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // NY
assert_matches!(iter.next(), Some(Match { query_index: 1, word_index: 2, .. })); // subway
assert_matches!(iter.next(), None);
});
@ -690,19 +776,109 @@ mod tests {
let results = builder.query("NYC subway", 0..20).unwrap();
let mut iter = results.into_iter();
assert_matches!(iter.next(), Some(Document { id: DocumentId(0), matches }) => {
let mut iter = matches.into_iter();
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // new = NY
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // york = NY
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // city = NY
assert_matches!(iter.next(), Some(Match { query_index: 1, word_index: 2, .. })); // subway
assert_matches!(iter.next(), None); // position rewritten ^
});
assert_matches!(iter.next(), Some(Document { id: DocumentId(1), matches }) => {
let mut iter = matches.into_iter();
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // NY
assert_matches!(iter.next(), Some(Match { query_index: 1, word_index: 1, .. })); // subway
assert_matches!(iter.next(), None);
});
assert_matches!(iter.next(), Some(Document { id: DocumentId(0), matches }) => {
let mut iter = matches.into_iter();
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // new
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 1, .. })); // york
assert_matches!(iter.next(), Some(Match { query_index: 1, word_index: 2, .. })); // subway
assert_matches!(iter.next(), None);
});
assert_matches!(iter.next(), None);
}
#[test]
/// Unique word has multi-word synonyms
fn even_harder_unique_to_multiword_synonyms() {
let mut store = InMemorySetStore::from_iter(vec![
("new", &[doc_char_index(0, 0, 0)][..]),
("york", &[doc_char_index(0, 1, 1)][..]),
("city", &[doc_char_index(0, 2, 2)][..]),
("yellow", &[doc_char_index(0, 3, 3)][..]),
("underground", &[doc_char_index(0, 4, 4)][..]),
("train", &[doc_char_index(0, 5, 5)][..]),
("broken", &[doc_char_index(0, 6, 6)][..]),
("NY", &[doc_char_index(1, 0, 0)][..]),
("blue", &[doc_char_index(1, 1, 1)][..]),
("subway", &[doc_char_index(1, 2, 2)][..]),
]);
store.add_synonym("NY", SetBuf::from_dirty(vec!["NYC", "new york", "new york city"]));
store.add_synonym("NYC", SetBuf::from_dirty(vec!["NY", "new york", "new york city"]));
store.add_synonym("subway", SetBuf::from_dirty(vec!["underground train"]));
let builder = QueryBuilder::new(&store);
let results = builder.query("NY subway broken", 0..20).unwrap();
let mut iter = results.into_iter();
assert_matches!(iter.next(), Some(Document { id: DocumentId(0), matches }) => {
let mut iter = matches.into_iter();
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // new = NY
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // york = NY
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // city = NY
assert_matches!(iter.next(), Some(Match { query_index: 1, word_index: 2, .. })); // underground = subway
assert_matches!(iter.next(), Some(Match { query_index: 1, word_index: 2, .. })); // train = subway
assert_matches!(iter.next(), Some(Match { query_index: 2, word_index: 3, .. })); // broken
assert_matches!(iter.next(), None); // position rewritten ^
});
assert_matches!(iter.next(), Some(Document { id: DocumentId(1), matches }) => {
let mut iter = matches.into_iter();
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // NY
assert_matches!(iter.next(), Some(Match { query_index: 1, word_index: 2, .. })); // subway
assert_matches!(iter.next(), None);
});
assert_matches!(iter.next(), None);
let builder = QueryBuilder::new(&store);
let results = builder.query("NYC subway", 0..20).unwrap();
let mut iter = results.into_iter();
assert_matches!(iter.next(), Some(Document { id: DocumentId(0), matches }) => {
let mut iter = matches.into_iter();
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // new = NY
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // york = NY
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // city = NY
assert_matches!(iter.next(), Some(Match { query_index: 1, word_index: 2, .. })); // underground = subway
assert_matches!(iter.next(), Some(Match { query_index: 1, word_index: 2, .. })); // train = subway
assert_matches!(iter.next(), None); // position rewritten ^
});
assert_matches!(iter.next(), Some(Document { id: DocumentId(1), matches }) => {
let mut iter = matches.into_iter();
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // NY
assert_matches!(iter.next(), Some(Match { query_index: 1, word_index: 2, .. })); // subway
assert_matches!(iter.next(), None);
});
assert_matches!(iter.next(), None);
}
#[test]
#[ignore]
/// Multi-word has multi-word synonyms
fn multiword_to_multiword_synonyms() {
let mut store = InMemorySetStore::from_iter(vec![
("NY", &[doc_index(0, 0)][..]),
("subway", &[doc_index(0, 1)][..]),
]);
store.add_synonym("new york", SetBuf::from_dirty(vec!["NYC", "NY", "new york city"]));
let builder = QueryBuilder::new(&store);
let results = builder.query("new york subway", 0..20).unwrap();
let mut iter = results.into_iter();
assert_matches!(iter.next(), Some(Document { id: DocumentId(0), matches }) => {
let mut iter = matches.into_iter();
assert_matches!(iter.next(), Some(Match { query_index: 0, word_index: 0, .. })); // NY
assert_matches!(iter.next(), Some(Match { query_index: 2, word_index: 1, .. })); // subway
assert_matches!(iter.next(), None);
});
assert_matches!(iter.next(), None);
}
}