“EARL: Joint Entity and Relation Linking for Question Answering over Knowledge Graphs” by Mohnish Dubey, Debayan Banerjee, Debanjan Chaudhuri and Jens Lehmann paper link: https://arxiv.org/pdf/1801.03825.pdf Mohnish Dubey presented EARL: A relation & entity linking for DBpedia Question Answering on LC-QuAD via Elasticsearch using fastText embeddings and LSTM. It proposed two fold approaches, using GTSP solver and connection density (3 features) classifier for adaptive re-ranking.

1. EARL

3. 3

4. 4

5. 5

6. dbr:Angela_Merkel
dbo:birthPlace“Angela Merkel”
Select right template for
the type of question
Where was Angela Merkel born?
NER
“born”Relation Linking
“Where/WRB was/VBD
Angela/NNP Merkel/NNP
born/VBN ?/.”
NLP
Preprocessing
Entity Linking
Relation Linking
SPARQL type
SELECT DISTINCT ?uri WHERE {
dbr:Angela_Merkel dbo:birthPlace ?uri }
Question Entity ; Relation Extracted ; Expected Answer type
Question Understanding
6
Refer : [1][2]

7. 7

8. 8

9. 9
Refer : http://qatutorial.sda.tech/

10. 10
Robert John Downey Jr. is an American actor
and singer. Downey was born April 4, 1965 in
Manhattan, New York, the son of writer,
director and filmographer Robert Downey Sr.
and actress Elsie Downey . Beginning in 2008,
Downey began portraying the role of Marvel
Comics superhero Iron Man in the Marvel
Cinematic Universe, appearing in several films
as either the lead role

11. 11
Robert John Downey Jr. is an American actor
and singer. Downey was born April 4, 1965 in
Manhattan, New York, the son of writer,
director and filmographer Robert Downey Sr.
and actress Elsie Downey . Beginning in 2008,
Downey began portraying the role of Marvel
Comics superhero Iron Man in the Marvel
Cinematic Universe, appearing in several
films as either the lead role

12. 12
Robert John Downey Jr. is an American actor
and singer. Downey was born April 4, 1965 in
Manhattan, New York, the son of writer,
director and filmographer Robert Downey Sr.
and actress Elsie Downey . Beginning in 2008,
Downey began portraying the role of Marvel
Comics superhero Iron Man in the Marvel
Cinematic Universe, appearing in several
films as either the lead role

13. 13
Robert John Downey Jr. is an American actor
and singer. Downey was born April 4, 1965 in
Manhattan, New York, the son of writer,
director and filmographer Robert Downey Sr.
and actress Elsie Downey . Beginning in 2008,
Downey began portraying the role of Marvel
Comics superhero Iron Man in the Marvel
Cinematic Universe, appearing in several films
as either the lead role

14. ●
●
●
14

15. ●
●
●
●
●
15
.. written by ..
.. wrote ..
.. author ...
.. screenwriter..
dbo:writer

16. 16

17. 17

18. 18

19. 19

20. 20

21. 21
Refer : [3]

22. 22
Refer : [4]

23. 23
Refer : https://www.elastic.co/products/elasticsearch
https://developer.oxforddictionaries.com/
https://fasttext.cc/

24. 24

25. ●
●
●
●
25

26. ●
●
●
●
26
Who is the husband of the leader of Germany?
Refer : [5]

27. ●
●
●
●
27
Who is the husband of the leader of Germany?

28. ●
●
●
●
28
Who is the husband of the leader of Germany?
…
….
…..
…
….
…..
…
….
…..

29. Each node set cand(k) is called a cluster in this vertex set.
29

30. 30

31. 31

32. 32
Refer : [6]

33. 33

34. 34

35. 35

36. 36

37. 37

38. 38
Who is the husband of the leader of Germany?
…
….
…..
…
….
…..
…
….
…..

39. 39

40. 40

41. 41

42. 42

43. 43

44. 44

45. 45

46. 46

47. 47
Refer : [7]

48. 48

49. 49

50. 50
Refer : [8,9,10,11,12]

51. 51
Refer : [13,14]

52. 52

53. 53

54. 54
This work was supported by grants from the EU H2020 Framework Programme
provided for the project HOBBIT (GA no. 688227).

55. 55
This work was supported by grants from the EU H2020 Framework Programme
provided for the project WDAqua (ITN, GA. 642795)

56. 56

57. 57

58. 58

59. 59

60. 60