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Code Issues Releases Wiki Activity

Don't compute split_words for phrases

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This commit is contained in:
Loïc Lecrenier 2023-05-16 16:22:23 +02:00
parent a37da36766
commit 5758268866
5 changed files with 45 additions and 17 deletions
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2
milli/src/search/new/logger/visual.rs
View File

@ -462,7 +462,7 @@ fill: \"#B6E2D3\"
shape: class
max_nbr_typo: {}",
term_subset.description(ctx),
term_subset.max_nbr_typos(ctx)
term_subset.max_typo_cost(ctx)
)?;
for w in term_subset.all_single_words_except_prefix_db(ctx)? {

37
milli/src/search/new/query_term/compute_derivations.rs
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@ -28,14 +28,14 @@ pub enum ZeroOrOneTypo {
impl Interned<QueryTerm> {
pub fn compute_fully_if_needed(self, ctx: &mut SearchContext) -> Result<()> {
let s = ctx.term_interner.get_mut(self);
if s.max_nbr_typos <= 1 && s.one_typo.is_uninit() {
if s.max_levenshtein_distance <= 1 && s.one_typo.is_uninit() {
assert!(s.two_typo.is_uninit());
// Initialize one_typo subterm even if max_nbr_typo is 0 because of split words
self.initialize_one_typo_subterm(ctx)?;
let s = ctx.term_interner.get_mut(self);
assert!(s.one_typo.is_init());
s.two_typo = Lazy::Init(TwoTypoTerm::default());
} else if s.max_nbr_typos > 1 && s.two_typo.is_uninit() {
} else if s.max_levenshtein_distance > 1 && s.two_typo.is_uninit() {
assert!(s.two_typo.is_uninit());
self.initialize_one_and_two_typo_subterm(ctx)?;
let s = ctx.term_interner.get_mut(self);
@ -185,7 +185,7 @@ pub fn partially_initialized_term_from_word(
original: ctx.word_interner.insert(word.to_owned()),
ngram_words: None,
is_prefix: false,
max_nbr_typos: 0,
max_levenshtein_distance: 0,
zero_typo: <_>::default(),
one_typo: Lazy::Init(<_>::default()),
two_typo: Lazy::Init(<_>::default()),
@ -256,7 +256,7 @@ pub fn partially_initialized_term_from_word(
Ok(QueryTerm {
original: word_interned,
ngram_words: None,
max_nbr_typos: max_typo,
max_levenshtein_distance: max_typo,
is_prefix,
zero_typo,
one_typo: Lazy::Uninit,
@ -275,7 +275,16 @@ fn find_split_words(ctx: &mut SearchContext, word: &str) -> Result<Option<Intern
impl Interned<QueryTerm> {
fn initialize_one_typo_subterm(self, ctx: &mut SearchContext) -> Result<()> {
let self_mut = ctx.term_interner.get_mut(self);
let QueryTerm { original, is_prefix, one_typo, max_nbr_typos, .. } = self_mut;
let allows_split_words = self_mut.allows_split_words();
let QueryTerm {
original,
is_prefix,
one_typo,
max_levenshtein_distance: max_nbr_typos,
..
} = self_mut;
let original = *original;
let is_prefix = *is_prefix;
// let original_str = ctx.word_interner.get(*original).to_owned();
@ -300,13 +309,17 @@ impl Interned<QueryTerm> {
})?;
}
let original_str = ctx.word_interner.get(original).to_owned();
let split_words = find_split_words(ctx, original_str.as_str())?;
let split_words = if allows_split_words {
let original_str = ctx.word_interner.get(original).to_owned();
find_split_words(ctx, original_str.as_str())?
} else {
None
};
let self_mut = ctx.term_interner.get_mut(self);
// Only add the split words to the derivations if:
// 1. the term is not an ngram; OR
// 1. the term is neither an ngram nor a phrase; OR
// 2. the term is an ngram, but the split words are different from the ngram's component words
let split_words = if let Some((ngram_words, split_words)) =
self_mut.ngram_words.as_ref().zip(split_words.as_ref())
@ -328,7 +341,13 @@ impl Interned<QueryTerm> {
}
fn initialize_one_and_two_typo_subterm(self, ctx: &mut SearchContext) -> Result<()> {
let self_mut = ctx.term_interner.get_mut(self);
let QueryTerm { original, is_prefix, two_typo, max_nbr_typos, .. } = self_mut;
let QueryTerm {
original,
is_prefix,
two_typo,
max_levenshtein_distance: max_nbr_typos,
..
} = self_mut;
let original_str = ctx.word_interner.get(*original).to_owned();
if two_typo.is_init() {
return Ok(());

17
milli/src/search/new/query_term/mod.rs
View File

@ -43,7 +43,7 @@ pub struct QueryTermSubset {
pub struct QueryTerm {
original: Interned<String>,
ngram_words: Option<Vec<Interned<String>>>,
max_nbr_typos: u8,
max_levenshtein_distance: u8,
is_prefix: bool,
zero_typo: ZeroTypoTerm,
// May not be computed yet
@ -342,10 +342,16 @@ impl QueryTermSubset {
}
None
}
pub fn max_nbr_typos(&self, ctx: &SearchContext) -> u8 {
pub fn max_typo_cost(&self, ctx: &SearchContext) -> u8 {
let t = ctx.term_interner.get(self.original);
match t.max_nbr_typos {
0 => 0,
match t.max_levenshtein_distance {
0 => {
if t.allows_split_words() {
1
} else {
0
}
}
1 => {
if self.one_typo_subset.is_empty() {
0
@ -438,6 +444,9 @@ impl QueryTerm {
self.zero_typo.is_empty() && one_typo.is_empty() && two_typo.is_empty()
}
fn allows_split_words(&self) -> bool {
self.zero_typo.phrase.is_none()
}
}
impl Interned<QueryTerm> {

4
milli/src/search/new/query_term/parse_query.rs
View File

@ -217,7 +217,7 @@ pub fn make_ngram(
original: ngram_str_interned,
ngram_words: Some(words_interned),
is_prefix,
max_nbr_typos,
max_levenshtein_distance: max_nbr_typos,
zero_typo: term.zero_typo,
one_typo: Lazy::Uninit,
two_typo: Lazy::Uninit,
@ -271,7 +271,7 @@ impl PhraseBuilder {
QueryTerm {
original: ctx.word_interner.insert(phrase_desc),
ngram_words: None,
max_nbr_typos: 0,
max_levenshtein_distance: 0,
is_prefix: false,
zero_typo: ZeroTypoTerm {
phrase: Some(phrase),

2
milli/src/search/new/ranking_rule_graph/typo/mod.rs
View File

@ -50,7 +50,7 @@ impl RankingRuleGraphTrait for TypoGraph {
// 3-gram -> equivalent to 2 typos
let base_cost = if term.term_ids.len() == 1 { 0 } else { term.term_ids.len() as u32 };
for nbr_typos in 0..=term.term_subset.max_nbr_typos(ctx) {
for nbr_typos in 0..=term.term_subset.max_typo_cost(ctx) {
let mut term = term.clone();
match nbr_typos {
0 => {