Given at BrooklynJS November 2014

2. 2014: John’s
Favorite Thing

3. Problem:
Art Photo Archives

7. Image Detail

8. Image Detail

9. Same Piece, Frame

10. Same Piece, Frame

11. Similar/Copies

13. Graph Analysis with Neo4j

14. Frick 420
420
Zeri 1583642090
Frick 417
417
?

16. Frick 347
347
Zeri 12227
33526
Frick 348
348
33525
?

18. 8132a 8132
57129
57134
57130
57138
8131a 8131
?

22. Neo4j: Cypher

24. () ()

25. () ()- - >

26. What is a node?
• A JSON document!
• {“name”:”John”,”age”:30}
• Can also have labels!
• :human, :programmer, :corporeal

27. ({name:”John”}) ()- - >

28. ({name:”John”}) (:human)- - >

29. ({name”:”John}) (:cat)- - >

30. What is a relationship?
• A JSON document!
• {“first_met_date”:”2014-11-20”,”visits”:1}
• Can have labels!
• :owns, :is_friends_with, :spies_on

31. ({name:”John”}) ()-[:owns]- >

32. ({name:”John”}) ()-[:is_friends_with]- >

33. “Select”
MATCH (a:Artwork {source: 'frick', century: 15})
RETURN count(distinct a)

34. “JOIN”
MATCH
(a:Artwork {source: 'frick'})--(b:Artwork)
RETURN a, b

35. Deep “JOIN”
MATCH
(a:Artwork {source: ‘frick’})-[*1..5]-(b:Artwork)
RETURN a, b

36. “Find and Insert”
MATCH (a:Artwork {id: 123}),
(b:Artwork {id: 456})
CREATE (a)-[:is_similar_to]->(b);

37. “Update or Insert then Create”
MERGE (artwork:Artwork {id: 123, source: ”frick”})
CREATE (image:Image {id: 456, source: “frick”})
CREATE (artwork)-[:photo]->(image);

38. Import data from CSV
USING PERIODIC COMMIT 500
LOAD CSV WITH HEADERS FROM "file://foo.csv" AS line
MERGE (artwork:Artwork {id: line.artwork, source: line.source)})
CREATE (image:Image {id: line.image, source: line.source})
CREATE (artwork)-[:photo]->(image);

39. Frick 420
420
Zeri 1583642090
Frick 417
417
?

40. Find the Missing Connection!
MATCH
(a:Artwork {source: 'frick'})--(i:Image)--
(z:Image {source: 'zeri'})--
(ii:Image)--(aa:Artwork {source: 'frick'})
WHERE not(f=ff) AND not(a--aa)
RETURN a,aa,i,ii,z

41. a
aa
?
MATCH
(a:Artwork {source: 'frick'})--
(i:Image)--
(z:Image {source: 'zeri'})--
(ii:Image)—
(aa:Artwork {source: 'frick'})
WHERE not(a=aa) AND not(i--ii)
RETURN a,aa,i,ii,z
i
ii
z

42. • http://ejohn.org/research/
• https://github.com/jeresig
• http://neo4j.com/developer/cypher-
query-language/
• http://neo4j.com/docs/2.0/cypher-
refcard/