Merge sort
E459515
Merge sort is a comparison-based, divide-and-conquer sorting algorithm that recursively splits a list into halves, sorts them, and then merges the sorted halves into a fully ordered sequence.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Merge sort canonical | 1 |
| Mergesort | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4596126 — 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: Merge sort Context triple: [Quicksort, comparedWith, Merge sort]
-
A.
Quicksort
Quicksort is a highly efficient, comparison-based sorting algorithm that uses a divide-and-conquer strategy and is widely employed in computer science and software systems.
-
B.
Divide and Conquer
"Divide and Conquer" is a World War II-era American propaganda documentary in the "Why We Fight" series that chronicles Nazi Germany’s invasion and subjugation of Western Europe.
-
C.
Fibonacci heap
A Fibonacci heap is an advanced data structure for implementing priority queues that supports very fast amortized running times for operations like insert and decrease-key, making it useful in algorithms such as Dijkstra’s shortest path.
-
D.
Marzullo's algorithm
Marzullo's algorithm is a method for selecting the most likely correct time interval from multiple, possibly conflicting time sources, commonly used in clock synchronization systems.
-
E.
Heap
Heap is the surname of Imogen Heap, an English singer-songwriter, producer, and audio engineer known for her innovative electronic music and vocal processing.
- 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: Merge sort Target entity description: Merge sort is a comparison-based, divide-and-conquer sorting algorithm that recursively splits a list into halves, sorts them, and then merges the sorted halves into a fully ordered sequence.
-
A.
Quicksort
Quicksort is a highly efficient, comparison-based sorting algorithm that uses a divide-and-conquer strategy and is widely employed in computer science and software systems.
-
B.
Divide and Conquer
"Divide and Conquer" is a World War II-era American propaganda documentary in the "Why We Fight" series that chronicles Nazi Germany’s invasion and subjugation of Western Europe.
-
C.
Fibonacci heap
A Fibonacci heap is an advanced data structure for implementing priority queues that supports very fast amortized running times for operations like insert and decrease-key, making it useful in algorithms such as Dijkstra’s shortest path.
-
D.
Marzullo's algorithm
Marzullo's algorithm is a method for selecting the most likely correct time interval from multiple, possibly conflicting time sources, commonly used in clock synchronization systems.
-
E.
Heap
Heap is the surname of Imogen Heap, an English singer-songwriter, producer, and audio engineer known for her innovative electronic music and vocal processing.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
comparison-based algorithm
ⓘ
divide-and-conquer algorithm ⓘ sorting algorithm ⓘ |
| bestSuitedFor |
data that does not fit in memory
ⓘ
sequential access media ⓘ |
| canBeImplementedAs |
bottom-up merge sort
ⓘ
top-down merge sort ⓘ |
| category |
comparison sort
ⓘ
divide-and-conquer sort ⓘ |
| dividesInto | two halves ⓘ |
| ensures | globally sorted order after final merge ⓘ |
| goal | produce fully ordered sequence ⓘ |
| hasAdvantage |
good cache performance in some implementations
ⓘ
predictable O(n log n) running time ⓘ |
| hasDisadvantage |
more overhead than simple quadratic sorts on small n
ⓘ
requires extra memory ⓘ |
| hasProperty |
deterministic
ⓘ
not in-place in standard implementation ⓘ stable ordering of equal elements ⓘ |
| hasStep |
combine step
ⓘ
conquer step ⓘ divide step ⓘ |
| isAdaptive | false ⓘ |
| isComparisonSort | true ⓘ |
| isStable | true ⓘ |
| keyOperation |
comparison
ⓘ
merge ⓘ |
| operatesOn |
array
ⓘ
list ⓘ sequence ⓘ |
| originatedFrom | John von Neumann ⓘ |
| recursivelySorts |
subarrays
ⓘ
sublists ⓘ |
| requires | auxiliary array for merging ⓘ |
| spaceComplexityInPlaceVariants | O(1) ⓘ |
| spaceComplexityTypical | O(n) ⓘ |
| thenMerges | sorted halves ⓘ |
| timeComplexityBestCase | O(n log n) ⓘ |
| usedIn |
Java Arrays.sort for objects
ⓘ
TimSort as a component idea ⓘ standard library sort implementations ⓘ |
| usesParadigm | divide and conquer ⓘ |
| worksWellFor |
external sorting
ⓘ
large datasets ⓘ linked lists ⓘ |
| yearIntroduced | 1945 ⓘ |
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: Merge sort Description of subject: Merge sort is a comparison-based, divide-and-conquer sorting algorithm that recursively splits a list into halves, sorts them, and then merges the sorted halves into a fully ordered sequence.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Merge sort