GIN index
E427691
A GIN index (Generalized Inverted Index) is a PostgreSQL index type optimized for efficient querying of composite values such as arrays, JSON, and full-text search data.
All labels observed (1)
| Label | Occurrences |
|---|---|
| GIN index canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4279482 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: GIN index Context triple: [BRIN, contrastedWith, GIN index]
-
A.
IDX
IDX is a simple binary file format commonly used to store multidimensional numerical arrays, such as the handwritten digit images and labels in the MNIST dataset.
-
B.
GIN
GIN is the three-letter ISO 3166-1 alpha-3 country code assigned to the West African nation of Guinea.
-
C.
GII
GII is the commonly used abbreviation for the Global Innovation Index, an annual ranking that measures and compares countries’ innovation performance worldwide.
-
D.
GII
GII is the commonly used abbreviation for Gasherbrum II, an 8,000-meter-class mountain in the Karakoram range on the China–Pakistan border.
-
E.
Ratings Percentage Index
The Ratings Percentage Index is a statistical ranking system used in U.S. college sports to evaluate and compare teams based on their wins, losses, and strength of schedule.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: GIN index Target entity description: A GIN index (Generalized Inverted Index) is a PostgreSQL index type optimized for efficient querying of composite values such as arrays, JSON, and full-text search data.
-
A.
IDX
IDX is a simple binary file format commonly used to store multidimensional numerical arrays, such as the handwritten digit images and labels in the MNIST dataset.
-
B.
GIN
GIN is the three-letter ISO 3166-1 alpha-3 country code assigned to the West African nation of Guinea.
-
C.
GII
GII is the commonly used abbreviation for the Global Innovation Index, an annual ranking that measures and compares countries’ innovation performance worldwide.
-
D.
GII
GII is the commonly used abbreviation for Gasherbrum II, an 8,000-meter-class mountain in the Karakoram range on the China–Pakistan border.
-
E.
Ratings Percentage Index
The Ratings Percentage Index is a statistical ranking system used in U.S. college sports to evaluate and compare teams based on their wins, losses, and strength of schedule.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf | PostgreSQL index type ⓘ |
| abbreviation | GIN ⓘ |
| benefit |
efficient containment queries
ⓘ
efficient full-text search queries ⓘ efficient membership tests ⓘ fast search for elements contained in a value ⓘ |
| comparedTo | GiST index ⓘ |
| designedFor | many-to-many relationships between keys and rows ⓘ |
| exampleOperatorClass |
gin__int_ops
ⓘ
gin_btree_ops ⓘ gin_trgm_ops ⓘ gin_tsvector_ops ⓘ |
| fastupdate | uses pending list to buffer index changes ⓘ |
| fullName | Generalized Inverted Index ⓘ |
| indexMethod | inverted index ⓘ |
| introducedIn |
PostgreSQL 8.2
ⓘ
linked to:
PostgreSQL
|
| maintenanceOperation |
REINDEX for rebuilding index
ⓘ
VACUUM to clean up pending list ⓘ |
| optimizedFor |
JSON data
ⓘ
arrays ⓘ composite values ⓘ full-text search data ⓘ |
| requires | operator class ⓘ |
| stores | keys with posting lists of row locations ⓘ |
| supports |
composite types
ⓘ
concurrent index creation ⓘ full-text search ⓘ hstore columns ⓘ indexing of JSON keys ⓘ indexing of JSON values ⓘ indexing of array elements ⓘ multicolumn indexes ⓘ partial indexes ⓘ range types ⓘ tsvector columns ⓘ user-defined operator classes ⓘ |
| supportsOperator |
<@ (is contained by) for arrays
ⓘ
? (key existence) for JSONB ⓘ ?& (all keys exist) for JSONB ⓘ ?| (any key exists) for JSONB ⓘ @> (contains) for arrays ⓘ @@ (text search match) for tsvector ⓘ |
| tradeOff |
larger index size compared to B-tree indexes
ⓘ
slower writes compared to B-tree indexes ⓘ |
| tunableParameter |
fastupdate
ⓘ
gin_pending_list_limit ⓘ |
| typicalUseCase |
full-text search on large text columns
ⓘ
searching within JSONB documents ⓘ tag or label search stored as arrays ⓘ |
| usedIn | PostgreSQL ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: GIN index Description of subject: A GIN index (Generalized Inverted Index) is a PostgreSQL index type optimized for efficient querying of composite values such as arrays, JSON, and full-text search data.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.