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Merge #3372

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3372: Enhance facet string normalization r=ManyTheFish a=ManyTheFish

# Pull Request

Use compatibility decomposition normalizer in facet string extraction in order to have a more human friendly sort order.

Now, [é (U+00E9)](https://www.compart.com/fr/unicode/U+00E9) is converted to [e (U+0065)](https://www.compart.com/fr/unicode/U+0065) + [◌́ (U+0301)](https://www.compart.com/fr/unicode/U+0301). This way any word starting with an accented/diacritized version of a character is put just after the words starting with the unaccented version of the character.

## Related issue

Fixes #3260 


Co-authored-by: ManyTheFish <many@meilisearch.com>
This commit is contained in:
bors[bot] 2023-01-18 17:17:53 +00:00 committed by GitHub
commit b3166df7ea
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 21 additions and 18 deletions
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5
milli/src/update/index_documents/extract/extract_fid_docid_facet_values.rs
View File

@ -4,6 +4,7 @@ use std::fs::File;
use std::io;
use std::mem::size_of;
use charabia::normalizer::{CharNormalizer, CompatibilityDecompositionNormalizer};
use heed::zerocopy::AsBytes;
use heed::BytesEncode;
use roaring::RoaringBitmap;
@ -135,7 +136,9 @@ fn extract_facet_values(value: &Value) -> (Vec<f64>, Vec<(String, String)>) {
}
}
Value::String(original) => {
let normalized = original.trim().to_lowercase();
let normalized = CompatibilityDecompositionNormalizer
.normalize_str(original.trim())
.to_lowercase();
output_strings.push((normalized, original.clone()));
}
Value::Array(values) => {

34
milli/tests/assets/test_set.ndjson
View File

@ -1,17 +1,17 @@
{"id":"A","word_rank":0,"typo_rank":1,"proximity_rank":15,"attribute_rank":505,"exact_rank":5,"asc_desc_rank":0,"sort_by_rank":0,"geo_rank":43,"title":"hell o","description":"hell o is the fourteenth episode of the american television series glee performing songs with this word","tag":"blue","_geo": { "lat": 50.62984446145472, "lng": 3.085712705162039 },"":"", "opt1": [null], "tag_in": 1}
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{"id":"D","word_rank":0,"typo_rank":1,"proximity_rank":10,"attribute_rank":757,"exact_rank":4,"asc_desc_rank":3,"sort_by_rank":2,"geo_rank":1381,"title":"hell on wheels tv series","description":"the construction of the first transcontinental railroad across the united states in the world","tag":"fehérorosz","_geo": { "lat": 50.63728851135729, "lng": 3.0703951595971626 },"":"", "opt1": 4, "tag_in": "four"}
{"id":"E","word_rank":2,"typo_rank":0,"proximity_rank":0,"attribute_rank":0,"exact_rank":4,"asc_desc_rank":4,"sort_by_rank":1,"geo_rank":1979,"title":"hello kitty","description":"also known by her full name kitty white is a fictional character produced by the japanese company sanrio","tag":"észak-korea","_geo": { "lat": 50.64264610511925, "lng": 3.0665099941857634 },"":"", "opt1": "E", "tag_in": "five"}
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