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Neo4j Cypher Query to find nearest nodes
Given I have a node structure like
(:PERSON {id:1})-[:KNOWS]->(:PERSON {id:2})
(:PERSON {id:1})-[:KNOWS]->(:PERSON {id:3})
how can I do a query to find the nearest person to a given person?
In this example the result would be person 2 as he is nearest.
A:
Nearest based on the number of edges
MATCH (person1)-[:KNOWS]->(person2)
WHERE person1.id (person2)
WHERE ABS(person1.id – person2.id) (person2)
WITH person2, COLLECT({id:person2.id, distance: ABS(person1.id – person2.id)}) as edges
WHERE length(edges) = 0
RETURN person2
Nearest based on similarity
MATCH (person1)-[:KNOWS*..6]->(person2)
RETURN person2
Nearest based on shared edges
MATCH (person1)-[*..4]->(person2)
RETURN person2
Nearest based on k nearest neighbor
MATCH (person1)Three-dimensional polyacrylamide gel electrophoresis for the evaluation of the response to chemotherapy: comparison with two-dimensional gel electrophoresis.
The high-resolution and high-throughput capabilities of three-dimensional polyacrylamide gel electrophoresis (3D PAGE) are compared to those of two-dimensional gel electrophoresis (2D PAGE) in the study of the chemotherapy
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