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336 Commits

Author SHA1 Message Date
Louis Dureuil
a20e4d447c
Position now takes into account the distance to the position of the word in the query 
it used to be based on the distance to the position 0
 2023-06-20 09:45:42 +02:00
Louis Dureuil
af57c3c577
Proximity costs 0 for documents that are perfectly matching 2023-06-20 09:45:42 +02:00
Louis Dureuil
0c40ef6911
Fix sort id 2023-06-20 09:45:42 +02:00
Loïc Lecrenier
2da86b31a6 Remove comments and add documentation 2023-06-14 12:39:42 +02:00
Louis Dureuil
a2a3b8c973
Fix offset difference between query and indexing for hard separators 2023-06-08 12:07:12 +02:00
Louis Dureuil
1dfc4038ab
Add test that fails before PR and passes now 2023-05-29 11:58:26 +02:00
Louis Dureuil
73198179f1
Consistently use wrapping add to avoid overflow in debug when query starts with a separator 2023-05-29 11:54:12 +02:00
meili-bors[bot]
2e49d6aec1
Merge #3768 
3768: Fix bugs in graph-based ranking rules + make `words` a graph-based ranking rule r=dureuill a=loiclec

This PR contains three changes:

## 1. Don't call the `words` ranking rule if the term matching strategy is `All`

This is because the purpose of `words` is only to remove nodes from the query graph. It would never do any useful work when the matching strategy was `All`. Remember that the universe was already computed before by computing all the docids corresponding to the "maximally reduced" query graph, which, in the case of `All`, is equal to the original graph.

## 2. The `words` ranking rule is replaced by a graph-based ranking rule. 

This is for three reasons:

1. **performance**: graph-based ranking rules benefit from a lot of optimisations by default, which ensures that they are never too slow. The previous implementation of `words` could call `compute_query_graph_docids` many times if some words had to be removed from the query, which would be quite expensive. I was especially worried about its performance in cases where it is placed right after the `sort` ranking rule. Furthermore, `compute_query_graph_docids` would clone a lot of bitmaps many times unnecessarily.

2. **consistency**: every other ranking rule (except `sort`) is graph-based. It makes sense to implement `words` like that as well. It will automatically benefit from all the features, optimisations, and bug fixes that all the other ranking rules get.

3. **surfacing bugs**: as the first ranking rule to be called (most of the time), I'd like `words` to behave the same as the other ranking rules so that we can quickly detect bugs in our graph algorithms. This actually already happened, which is why this PR also contains a bug fix.

## 3. Fix the `update_all_costs_before_nodes` function

It is a bit difficult to explain what was wrong, but I'll try. The bug happened when we had graphs like:
<img width="730" alt="Screenshot 2023-05-16 at 10 58 57" src="https://github.com/meilisearch/meilisearch/assets/6040237/40db1a68-d852-4e89-99d5-0d65757242a7">
and we gave the node `is` as argument.

Then, we'd walk backwards from the node breadth-first. We'd update the costs of:
1. `sun`
2. `thesun`
3. `start`
4. `the`

which is an incorrect order. The correct order is:

1. `sun`
2. `thesun`
3. `the`
4. `start`

That is, we can only update the cost of a node when all of its successors have either already been visited or were not affected by the update to the node passed as argument. To solve this bug, I factored out the graph-traversal logic into a `traverse_breadth_first_backward` function.


Co-authored-by: Loïc Lecrenier <loic.lecrenier@me.com>
Co-authored-by: Louis Dureuil <louis@meilisearch.com>
 2023-05-23 13:28:08 +00:00
Louis Dureuil
51043f78f0
Remove trailing whitespace 2023-05-23 15:27:25 +02:00
Louis Dureuil
a490a11325
Add explanatory comment on the way we're recomputing costs 2023-05-23 15:24:24 +02:00
Loïc Lecrenier
ec8f685d84 Fix bug in cheapest path algorithm 2023-05-16 17:01:30 +02:00
Loïc Lecrenier
5758268866 Don't compute split_words for phrases 2023-05-16 17:01:18 +02:00
Loïc Lecrenier
3e19702de6 Update snapshot tests 2023-05-16 12:22:46 +02:00
Loïc Lecrenier
f6524a6858 Adjust costs of edges in position ranking rule 
To ensure good performance
 2023-05-16 11:28:56 +02:00
meili-bors[bot]
65ad8cce36
Merge #3741 
3741: Add ngram support to the highlighter r=ManyTheFish a=loiclec

This PR fixes a bug introduced by the search refactor, where ngrams were not highlighted. 

The solution was to add the ngrams to the vector of `LocatedQueryTerm` that is given to the `MatchingWords` structure.

Co-authored-by: Loïc Lecrenier <loic.lecrenier@me.com>
 2023-05-16 09:03:31 +00:00
Loïc Lecrenier
a37da36766 Implement words as a graph-based ranking rule and fix some bugs 2023-05-16 10:42:11 +02:00
Loïc Lecrenier
85d96d35a8 Highlight ngram matches as well 2023-05-16 10:39:36 +02:00
Loïc Lecrenier
4d352a21ac Compute split words derivations of terms that don't accept typos 2023-05-10 13:31:19 +02:00
Loïc Lecrenier
3625389057 Highlight ngram matches as well 2023-05-08 15:35:41 +02:00
meili-bors[bot]
eace6df91b
Merge #3726 
3726: Fix prefix highlighting r=loiclec a=ManyTheFish

The prefix queries were not properly highlighted, this PR now highlights only the start of a word when it matched with a prefix

Co-authored-by: ManyTheFish <many@meilisearch.com>
Co-authored-by: Loïc Lecrenier <loic.lecrenier@me.com>
 2023-05-08 07:46:46 +00:00
Loïc Lecrenier
83ab8cf4e5 Remove dbg!(..) expression in highlighter tests 2023-05-08 09:45:23 +02:00
ManyTheFish
cd2573fcc3 Fix prefix highlighting 2023-05-04 16:53:50 +02:00
Jakub Jirutka
13f1277637 Allow to disable specialized tokenizations (again) 
In PR #2773, I added the `chinese`, `hebrew`, `japanese` and `thai`
feature flags to allow melisearch to be built without huge specialed
tokenizations that took up 90% of the melisearch binary size.
Unfortunately, due to some recent changes, this doesn't work anymore.
The problem lies in excessive use of the `default` feature flag, which
infects the dependency graph.

Instead of adding `default-features = false` here and there, it's easier
and more future-proof to not declare `default` in `milli` and
`meilisearch-types`. I've renamed it to `all-tokenizers`, which also
makes it a bit clearer what it's about.
 2023-05-04 15:45:40 +02:00
Louis Dureuil
f8f190cd40
Update exactness tests following charabia camelCase tokenization 2023-05-03 14:45:09 +02:00
Louis Dureuil
1aaf24ccbf
Cargo fmt 2023-05-03 12:21:58 +02:00
Louis Dureuil
342c4ff85d
geosort: Remove rtree unwrap 2023-05-03 09:52:16 +02:00
Tamo
c85392ce40
make the descendent geosort fast 2023-05-03 09:13:12 +02:00
Tamo
8875d24a48
deserialize the rtree only when its needed, and keep it in memory once it has been deserialized 2023-05-03 09:13:12 +02:00
Tamo
c470b67fa2
revamp the test to use execute_iterative_and_rtree_returns_the_same 2023-05-03 09:13:12 +02:00
Louis Dureuil
b60840ebff
Remove self.iterating from words 2023-05-02 18:54:23 +02:00
Louis Dureuil
fdc1763838
Use MultiOps for resolve_query_graph 2023-05-02 18:54:09 +02:00
Louis Dureuil
75819bc940
Remove too many arguments on resolve_maximally_reduced_query_graph 2023-05-02 18:53:40 +02:00
Louis Dureuil
7b8cc25625
rename located_query_terms_from_string -> located_query_terms_from_tokens 2023-05-02 18:53:01 +02:00
Loïc Lecrenier
aa63091752 Fix bug in exact_attribute 2023-05-02 10:48:32 +02:00
Loïc Lecrenier
1b514517f5 Fix bug in computation of query term at a position 2023-05-02 10:48:32 +02:00
Loïc Lecrenier
11f814821d Minor cleanup 2023-05-02 10:48:32 +02:00
Loïc Lecrenier
30fb1153cc Speed up graph based ranking rule when a lot of different costs exist 2023-05-02 09:59:42 +02:00
Loïc Lecrenier
3b2c8b9f25 Improve performance of position rr 2023-05-02 09:59:42 +02:00
Loïc Lecrenier
2a7f9adf78 Build query graph more correctly from paths 
Update snapshots
 2023-05-02 09:59:42 +02:00
Loïc Lecrenier
608ceea440 Fix bug in position rr 2023-05-02 09:59:42 +02:00
Loïc Lecrenier
79001b9c97 Improve performance of the cheapest path finder algorithm 2023-05-02 09:59:42 +02:00
Loïc Lecrenier
59b12fca87 Fix errors, clippy warnings, and add review comments 2023-04-29 11:48:11 +02:00
Loïc Lecrenier
48f5bb1693 Implements the geo-sort ranking rule 2023-04-29 11:02:16 +02:00
Loïc Lecrenier
bc4efca611 Add more tests for the attribute ranking rule 2023-04-29 10:56:48 +02:00
Loïc Lecrenier
899baa0ea5 Update forgotten snapshot from previous commit 2023-04-27 13:43:04 +02:00
Loïc Lecrenier
374095d42c Add tests for stop words and fix a couple of bugs 2023-04-27 13:30:09 +02:00
Louis Dureuil
b41a6cbd7a
Check sort criteria also in placeholder search 2023-04-26 16:28:17 +02:00
Louis Dureuil
c8af572697
Add tests for exact words and exact attributes 2023-04-26 16:13:01 +02:00
Loïc Lecrenier
b448aca49c Add more tests for exactness rr 2023-04-26 11:04:18 +02:00
Loïc Lecrenier
55bad07c16 Fix bug in exact_attribute rr implementation 2023-04-26 10:40:05 +02:00
Loïc Lecrenier
3421125a55 Prevent the exactness ranking rule from removing random words 
Make it strictly follow the term matching strategy
 2023-04-26 09:09:19 +02:00
Loïc Lecrenier
d3a94e8b25 Fix bugs and add tests to exactness ranking rule 2023-04-25 16:49:08 +02:00
Loïc Lecrenier
8f2e971879 Add tests for "exactness" rr, make correct universe computation 2023-04-24 16:57:34 +02:00
Loïc Lecrenier
d1fdbb63da Make all search tests pass, fix distinctAttribute bug 2023-04-24 12:12:08 +02:00
Loïc Lecrenier
84d9c731f8 Fix bug in encoding of word_position_docids and word_fid_docids 2023-04-24 09:59:30 +02:00
Loïc Lecrenier
bd9aba4d77 Add "position" part of the attribute ranking rule 2023-04-13 10:46:09 +02:00
Loïc Lecrenier
8edad8291b Add logger to attribute rr, fix a bug 2023-04-13 10:25:00 +02:00
Kerollmops
d9cebff61c Add a simple test to check that attributes are ranking correctly 2023-04-13 08:27:09 +02:00
Loïc Lecrenier
30f7bd03f6 Fix compiler warning/errors caused by previous merge 2023-04-13 08:27:09 +02:00
Kerollmops
df0d9bb878 Introduce the attribute ranking rule in the list of ranking rules 2023-04-13 08:27:09 +02:00
Kerollmops
5230ddb3ea Resolve the attribute ranking rule conditions 2023-04-13 08:27:09 +02:00
Kerollmops
d6a7c28e4d Implement the attribute ranking rule edge computation 2023-04-13 08:27:09 +02:00
Kerollmops
e55efc419e Introduce a new cache for the words fids 2023-04-13 08:27:09 +02:00
Loïc Lecrenier
644e136aee Merge branch 'search-refactor-typo-attributes' into search-refactor 2023-04-13 08:26:56 +02:00
Louis Dureuil
38b7b31beb Decide to use prefix DB if the word is not an ngram 2023-04-12 16:45:38 +02:00
Louis Dureuil
7a01f20df7 Use word_prefix_docids, make get_word_prefix_docids private 2023-04-12 16:45:38 +02:00
Louis Dureuil
c20c38a7fa Add SearchContext::word_prefix_docids() method 2023-04-12 16:44:43 +02:00
Louis Dureuil
5ab46324c4 Everyone uses the SearchContext::word_docids instead of get_db_word_docids 
make get_db_word_docids private
 2023-04-12 16:44:43 +02:00
Louis Dureuil
325f17488a Add SearchContext::word_docids() method 2023-04-12 16:37:05 +02:00
Louis Dureuil
e7ff987c46 Update call sites 2023-04-12 16:36:38 +02:00
Louis Dureuil
244003e36f Refactor DB cache to return Roaring Bitmaps directly instead of byte slices 2023-04-12 16:35:48 +02:00
Loïc Lecrenier
1f813a6f3b Simplify implementation of the detailed (=visual) logger 2023-04-12 16:32:53 +02:00
Loïc Lecrenier
96183e804a Simplify the logger 2023-04-12 16:32:53 +02:00
Loïc Lecrenier
7ab48ed8c7 Matching words fixes 2023-04-12 16:21:43 +02:00
Loïc Lecrenier
e7bb8c940f Merge branch 'search-refactor-highlighter' into search-refactor-highlighter-merged 2023-04-11 12:22:34 +02:00
Loïc Lecrenier
d0e9d65025 Fix distinct attribute bugs 2023-04-07 11:09:01 +02:00
Loïc Lecrenier
a81165f0d8 Merge remote-tracking branch 'origin/main' into search-refactor 2023-04-07 10:15:55 +02:00
Loïc Lecrenier
d6585eb10b Avoid splitting ngrams into their original component words 2023-04-07 10:13:49 +02:00
Loïc Lecrenier
f7d90ad19f Merge remote-tracking branch 'origin/search-refactor-tests-doc' into search-refactor 2023-04-07 10:13:18 +02:00
Louis Dureuil
31630c85d0 exactness graph rr: Add important TODO/FIXME after review 2023-04-06 17:50:39 +02:00
Louis Dureuil
ab09dc0167 exact_attributes: Add TODOs and additional check after review 2023-04-06 17:50:39 +02:00
Louis Dureuil
618c54915d exact_attribute: dedup nodes after sorting them 2023-04-06 17:50:39 +02:00
Louis Dureuil
90a6c01495 Use correct codec in proximity 2023-04-06 17:50:39 +02:00
Louis Dureuil
e58426109a Fix panics and issues in exactness graph ranking rule 2023-04-06 17:50:39 +02:00
Louis Dureuil
f513cf930a Exact attribute with state 2023-04-06 17:50:39 +02:00
Louis Dureuil
8a13ed7e3f Add exactness ranking rules 2023-04-06 17:50:39 +02:00
Louis Dureuil
1b8e4d0301 Add ExactTerm and helper method 2023-04-06 17:50:39 +02:00
Louis Dureuil
996619b22a Increase position by 8 on hard separator when building query terms 2023-04-06 17:50:39 +02:00
Louis Dureuil
2c9822a337 Rename is_multiple_words to is_ngram and zero_typo to exact 2023-04-06 17:50:39 +02:00
Louis Dureuil
7276deee0a Add new db caches 2023-04-06 17:50:39 +02:00
ManyTheFish
f7e7f438f8 Patch prefix match 2023-04-06 17:22:31 +02:00
ManyTheFish
ba8dcc2d78 Fix clippy 2023-04-06 15:50:47 +02:00
Loïc Lecrenier
7ca91ebb71 Merge branch 'search-refactor-exactness' into search-refactor-tests-doc 2023-04-06 15:16:35 +02:00
ManyTheFish
47f6a3ad3d Take into account that a logger need the search context 2023-04-06 15:02:23 +02:00
ManyTheFish
ae17c62e24 Remove warnings 2023-04-06 14:07:18 +02:00
ManyTheFish
9c5f64769a Integrate the new Highlighter in the search 2023-04-06 13:58:56 +02:00
ManyTheFish
ebe23b04c9 Make the matcher consume the search context 2023-04-06 12:28:28 +02:00
ManyTheFish
13b7c826c1 add new highlighter 2023-04-06 12:15:37 +02:00
Louis Dureuil
d1ddaa223d
Use correct codec in proximity 2023-04-05 18:14:00 +02:00
Louis Dureuil
f7ecea142e
Fix panics and issues in exactness graph ranking rule 2023-04-05 18:13:46 +02:00
Louis Dureuil
337e75b0e4
Exact attribute with state 2023-04-05 18:12:46 +02:00
Loïc Lecrenier
b5691802a3 Add new tests and fix construction of query graph from paths 2023-04-05 16:31:10 +02:00
Loïc Lecrenier
6e50f23896 Add more search tests 2023-04-05 13:33:23 +02:00
Loïc Lecrenier
4c8a0179ba Add more search tests 2023-04-05 11:30:49 +02:00
Loïc Lecrenier
c69cbec64a Add more search tests 2023-04-05 11:20:04 +02:00
Loïc Lecrenier
ce328c329d Move bucket sort function to its own module and fix a bug 2023-04-04 18:03:08 +02:00
Loïc Lecrenier
959e4607bb Add more search tests 2023-04-04 18:02:46 +02:00
Louis Dureuil
4b4ffb8ec9
Add exactness ranking rules 2023-04-04 17:12:07 +02:00
Louis Dureuil
3951fe22ab
Add ExactTerm and helper method 2023-04-04 17:09:32 +02:00
Louis Dureuil
4d5bc9df4c
Increase position by 8 on hard separator when building query terms 2023-04-04 17:07:26 +02:00
Louis Dureuil
ec2f8e8040
Rename is_multiple_words to is_ngram and zero_typo to exact 2023-04-04 17:06:07 +02:00
Louis Dureuil
406b8bd248
Add new db caches 2023-04-04 17:04:46 +02:00
Loïc Lecrenier
62b9c6fbee Add search tests 2023-04-04 16:18:22 +02:00
Loïc Lecrenier
b439d36807 Split query_term module into multiple submodules 2023-04-04 15:38:30 +02:00
Loïc Lecrenier
faceb661e3 Add note that a part of the code needs fixing 2023-04-04 15:02:01 +02:00
Loïc Lecrenier
4129d657e2 Simplify query_term module a bit 2023-04-04 15:01:42 +02:00
Loïc Lecrenier
3f13608002 Fix computation of ngram derivations 2023-04-03 15:27:49 +02:00
Loïc Lecrenier
4708d9b016 Fix compiler warnings/errors 2023-04-03 10:09:27 +02:00
Clément Renault
0d2e7bcc13 Implement the previous way for the exhaustive distinct candidates 2023-04-03 10:08:10 +02:00
Loïc Lecrenier
55fbfb6124 Merge branch 'search-refactor-located-query-terms' into search-refactor 2023-04-03 10:04:36 +02:00
Loïc Lecrenier
58fe260c72 Allow removing all the terms from a query if it contains a phrase 2023-04-03 09:18:02 +02:00
Loïc Lecrenier
24e5f6f7a9 Don't remove phrases with "last" term matching strategy 2023-04-03 09:17:33 +02:00
Louis Dureuil
9b87c36200 Limit the number of derivations for a single word. 2023-03-31 09:19:18 +02:00
Loïc Lecrenier
12b26cd54e Don't remove phrases from the query with term matching strategy Last 2023-03-30 14:54:08 +02:00
Loïc Lecrenier
061b1e6d7c Tiny refactor of query graph remove_nodes method 2023-03-30 14:49:25 +02:00
Loïc Lecrenier
0d6e8b5c31 Fix phrase search bug when the phrase has only one word 2023-03-30 14:48:12 +02:00
Loïc Lecrenier
d48cdc67a0 Fix term matching strategy bugs 2023-03-30 14:01:52 +02:00
Loïc Lecrenier
35c16ad047 Use new term matching strategy logic in words ranking rule 2023-03-30 13:15:43 +02:00
Loïc Lecrenier
2997d1f186 Use new term matching strategy logic in resolve_maximally_reduced_... 2023-03-30 13:12:51 +02:00
Loïc Lecrenier
2a5997fb20 Avoid expensive assert! in bucket sort function 2023-03-30 13:07:17 +02:00
Loïc Lecrenier
ee8a9e0bad Remove outdated sentence in documentation 2023-03-30 12:22:24 +02:00
Loïc Lecrenier
3b0737a092 Fix detailed logger 2023-03-30 12:20:44 +02:00
Loïc Lecrenier
fdd02105ac Graph-based ranking rule + term matching strategy support 2023-03-30 12:19:21 +02:00
Loïc Lecrenier
aa9592455c Refactor the paths_of_cost algorithm 
Support conditions that require certain nodes to be skipped
 2023-03-30 12:11:11 +02:00
Loïc Lecrenier
01e24dd630 Rewrite proximity ranking rule 2023-03-30 11:59:06 +02:00
Loïc Lecrenier
ae6bb1ce17 Update the ConditionDocidsCache after change to RankingRuleGraphTrait 2023-03-30 11:41:20 +02:00
Loïc Lecrenier
5fd28620cd Build ranking rule graph correctly after changes to trait definition 2023-03-30 11:32:55 +02:00
Loïc Lecrenier
728710d63a Update typo ranking rule to use new query term structure 2023-03-30 11:32:19 +02:00
Loïc Lecrenier
fa81381865 Update the trait requirements of ranking-rule graphs 2023-03-30 11:19:45 +02:00
Loïc Lecrenier
b96a682f16 Update resolve_graph module to work with lazy query terms 2023-03-30 11:10:38 +02:00
Loïc Lecrenier
d0f048c068 Simplify the API of the DatabaseCache 2023-03-30 11:08:17 +02:00
Loïc Lecrenier
223e82a10d Update QueryGraph to use new lazy query terms + build from paths 2023-03-30 11:06:02 +02:00
Loïc Lecrenier
9507ff5e31 Update query term structure to allow for laziness 2023-03-30 11:06:02 +02:00
Louis Dureuil
c2b025946a
located_query_terms_from_string: use u16 for positions, hard limit number of iterated tokens. 
- Refactor phrase logic to reduce number of possible states
 2023-03-30 11:04:14 +02:00
Loïc Lecrenier
3a818c5e87 Add more functionality to interners 2023-03-30 09:56:23 +02:00
Louis Dureuil
d74134ce3a
Check sort criteria 2023-03-29 15:21:54 +02:00
Louis Dureuil
5ac129bfa1
Mark geosearch as currently unimplemented for sort rule 2023-03-29 15:20:42 +02:00
Louis Dureuil
abb4522f76
Small comment on ignored rules for placeholder search 2023-03-29 09:11:06 +02:00
Louis Dureuil
ef084ef042
SmallBitmap: Consistently panic on incoherent universe lengths 2023-03-29 08:45:38 +02:00
Louis Dureuil
3524bd1257
SmallBitmap: Add documentation 2023-03-29 08:44:11 +02:00