DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio &...
Transcript of DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio &...
![Page 1: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/1.jpg)
CACAOConditional Spread Activationfor Keyword Query Interpretation
15th Internation Conference on Semantic WebKarlsruhe 2019
Edgard Marx, Gustavo Publio & Thomas Riechert
LiberAI
![Page 2: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/2.jpg)
2
openQA
*https://github.com/AKSW/openQA
Previous Works
LiberAI
![Page 3: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/3.jpg)
3
KBox
KBox
Is the Knowledge
Graph in KBox?
YES
NOResolve
User provides SPARQLquery and the target Knowledge Graph URI
ExecuteSPARQL Query
DDNS
User/Application
SELECT ?s ?p ?o ...
+http://knowledgegraph.uri
Dereference
*https://github.com/AKSW/KBoxLiberAI
Previous Works
![Page 4: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/4.jpg)
4
NSpM
*https://github.com/AKSW/NSpMLiberAI
Previous Works
![Page 5: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/5.jpg)
5
DBNQA
*https://github.com/AKSW/DBNQA
https://wikipedia.org/wiki/List_of_datasets_for_machine-learning_research
Previous Works
LiberAI
![Page 6: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/6.jpg)
Outline
• Motivation
• Problem Statment
• Background
• Approach
• Evaluation
• Counclusion & Future Works
6LiberAI
![Page 7: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/7.jpg)
Resource Description
Framework (RDF)
Unstructured
Linked Data
Structured
Crowd
Linked Data
LiberAI
7
Motivation
![Page 8: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/8.jpg)
8
• Entity Retrieval• Question Answering• Entity Linking
Linked Data
Resource Description
Framework (RDF)Access (the information needed)
LiberAI
Motivation
![Page 9: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/9.jpg)
9
Resource Description
Framework (RDF)Entity Retrieval
Formally, a top-k entity retrieval takes a keyword query Q,
an integer 0 < k, a set of entities E={e1, e2, . . . , e|E|},
and returns the top-k entities based on
a scoring function S(Q, e)
LiberAI
Problem statement
![Page 10: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/10.jpg)
10
Resource Description
Framework (RDF)Entity Retrieval
Select * where {
?s dbo:birthPlace dbpedia:Leipzig
}
LiberAI
Problem statement
![Page 11: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/11.jpg)
TF-IDF
11
𝑤𝑡, 𝑑= 𝑡𝑓𝑡, 𝑑 ∙ 𝑙𝑜𝑔
|𝐷|
| 𝑑′ ∈ 𝐷 𝑡 ∈ 𝑑′
LiberAI
Background
![Page 12: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/12.jpg)
BM25
12
"This can opener can open any can that a can opener can and if this can opener cannot open any can that a can opener can, then this can opener is free"
“If this can opener does not open any can, then you can take it for free”
LiberAI
Background
![Page 13: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/13.jpg)
BM25
13LiberAI
Background
![Page 14: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/14.jpg)
BM25F
14LiberAI
Background
![Page 15: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/15.jpg)
Field Weighted
15LiberAI
weight(p1) > weight(p2) > weight(p3) …
Background
![Page 16: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/16.jpg)
Learning to Rank
16LiberAI
Background
![Page 17: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/17.jpg)
17LiberAI
Entity Link in Queries
Entity Linking
Query
Entity Candidate Generation
Ranking
Entities
Query Expansion
Query
Linked Entities
Entity Retrieval
Background
![Page 18: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/18.jpg)
General IR Architecture
18
Entity Retrieval, Entity Linking, Question Answering
Query
Entity Candidate Generation
Ranking
Result
Query Expansion
LiberAI
Background
![Page 19: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/19.jpg)
Interaction
19
Entity Retrieval Entity Linking Question Answering
Query
Entity Candidate Generation
Ranking
Entities
Query Expansion
Query
Entity Candidate Generation
Ranking
Linked Entities
Query Expansion
Query
Entity Candidate Generation
Ranking
Answer
Query Expansion
LiberAI
Background
![Page 20: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/20.jpg)
Lastest Architecture
20
Entity Retrieval Entity Linking
Query
Entity Candidate Generation
Ranking
Entities
Query Expansion
Query
Entity Candidate Generation
Ranking
Linked Entities
Query Expansion
LiberAI
Background
![Page 21: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/21.jpg)
Lastest Architecture
21LiberAI
Background
![Page 22: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/22.jpg)
Current Scenario
22
Entity Retrieval Entity Linking Question Answering
Query
Entity Candidate Generation
Ranking
Entities
Query Expansion
Query
Entity Candidate Generation
Ranking
Linked Entities
Query Expansion
Query
Entity Candidate Generation
Ranking
Answer
Query Expansion
LiberAI
Background
![Page 23: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/23.jpg)
Return linked resources
23
Entity Retrieval Entity Linking Question Answering
Query
Entity Candidate Generation
Ranking
Linked Resources
Query Expansion
Query
Entity Candidate Generation
Ranking
Linked Entities
Query Expansion
Query
Entity Candidate Generation
Ranking
Answer
Query Expansion
LiberAI
1
Proposal
![Page 24: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/24.jpg)
Return the answer
24
Entity Retrieval Entity Linking Question Answering
Query
Entity Candidate Generation
Ranking
Linked Resources +
Answer
Query Expansion
Query
Entity Candidate Generation
Ranking
Linked Entities
Query Expansion
Query
Entity Candidate Generation
Ranking
Answer
Query Expansion
LiberAI
1
2
Proposal
![Page 25: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/25.jpg)
Challenge 1: *Local Term Frequency
25LiberAI
*not to confuse with global
dbr:Albert_Leadbr:Albert_Lea_Public_Library …
18
1
“Albert Lea …”
“Albert Lea …”
“Albert Lea …” …
7
1
“Albert Lea …”
“Albert Lea …”
“Albert Lea …”
Q: “Albert Lea”
![Page 26: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/26.jpg)
Challenge 2: Cohesion
26LiberAI
Q: “Albert Lea”
dbr:Albert_Leadbr:Albert_Lea_Public_Library …
18
1
“Albert Lea …”
“Albert Lea …”
“Albert Lea …” …
7
1
“Albert Lea …”
“Albert Lea …”
“Albert Lea …”
A B
![Page 27: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/27.jpg)
27LiberAI
Q: “Albert Lea”
dbr:Albert_Leadbr:Albert_Lea_Public_Library …
18
1
“Albert Lea …”
“Albert Lea …”
“Albert Lea …” …
7
1
“Albert Lea …”
“Albert Lea …”
“Albert Lea …”
Preposition 1 [1][2]: maximize the number of tokens and reduce the number of mapped entities
A B
[1] SWJ, Shekarpour et al. 2015, [2] NAACL, Sakor et al. 2019
Challenge 2: Cohesion
![Page 28: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/28.jpg)
28LiberAI
Q: “Albert Lea”
dbr:Albert_Leadbr:Albert_Lea_Public_Library
18“Albert Lea …”
7“Albert Lea …”
Proposition 1 [1][2]: maximize the number of tokens and reduce the number of mapped entities
A B
Does NOT satisfy: Either A and B comply with the proposition 1
[1] SWJ, Shekarpour et al. 2015, [2] NAACL, Sakor et al. 2019
Challenge 2: Cohesion
![Page 29: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/29.jpg)
29LiberAI
Q: “Albert Lea”
dbr:Albert_Leadbr:Albert_Lea_Public_Library …
18
1
“Albert Lea …”
“Albert Lea …”
“Albert Lea …” …
7
1
“Albert Lea …”
“Albert Lea …”
“Albert Lea …”
Proposition 2 [3][4]: use the context
A B
[3] ISWC, Usbeck et al. 2014, [4] KCap, Moussallem et al. 2017
Challenge 2: Cohesion
![Page 30: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/30.jpg)
30LiberAI
Q: “Albert Lea”
Proposition 2 [3][4]: use the context
Does NOT satisfy: Either A and B comply with preposition 2
[3] ISWC, Usbeck et al. 2014, [4] KCap, Moussallem et al. 2017
dbr:Albert_Leadbr:Albert_Lea_Public_Library
18“Albert Lea …”
7“Albert Lea …”
A B
Challenge 2: Cohesion
![Page 31: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/31.jpg)
31LiberAI
Q: “strawberry ice cream”
Proposition 3 [5][6]: Max Similarity (Levenshtein and Jaccard)
dbr:Strawberry_ice_cream
“Strawberry_ice_cream”A
dbr:Banana_split
“strawberry”B
“ice cream”
[5] AAAI, Zhang et al. 2016, [6] VLDB, Zheng et al. 2019
Challenge 2: Cohesion
![Page 32: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/32.jpg)
32LiberAI
Q: “strawberry ice cream”
Proposition 3 [5][6]: Max Similarity (Levenshtein and Jaccard)
Does NOT satisfy: Either A and B comply with preposition 3
[5] AAAI, Zhang et al. 2016, [6] VLDB, Zheng et al. 2019
dbr:Strawberry_ice_cream
“Strawberry_ice_cream”A
dbr:Banana_split
“strawberry”B
“ice cream”
1
1/3
2/3
Challenge 2: Cohesion
![Page 33: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/33.jpg)
Challenge 3: Scoring Function
33LiberAI
0
1
2
3
4
5
6
7
8
9
10
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
BM25F
Score
Where is the answer?
![Page 34: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/34.jpg)
Approach
34LiberAI
Can we do better?
![Page 35: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/35.jpg)
Conditional Spread Activation
35LiberAI
dbr:Albert_Leadbr:Albert_Lea_Public_Library …
18
1
“Albert Lea …”
“Albert Lea …”
“Albert Lea …” …
7
1
“Albert Lea …”
“Albert Lea …”
“Albert Lea …”
s = 0
s = 0s > 0
s > 0
Q: “Albert Lea”Challenge 1: Local Term Frequency
A B
Approach
![Page 36: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/36.jpg)
Field Weight
36LiberAI
dbr:Albert_Leadbr:Albert_Lea_Public_Library
1“Albert Lea …”
1“Albert Lea …”
s > 0 s > 0
Q: “Albert Lea”Challenge 1: Local Term FrequencyChallenge 2: Cohesion
weight(ptype) > weight(plabel) > weight(pothers)
A B
Approach
![Page 37: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/37.jpg)
Field Weight
37LiberAI
dbr:Albert_Leadbr:Albert_Lea_Public_Library
1“Albert Lea …”
1“Albert Lea …”
Q: “Albert Lea”Challenge 1: Local Term FrequencyChallenge 2: Cohesion
𝑆 𝑄𝑖, 𝐿𝑖 = ∑𝑄𝑖𝐿𝑖 if ∑𝑄𝑖𝐿𝑖 = 1
A B
Approach
![Page 38: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/38.jpg)
Field Weight
38LiberAI
dbr:Albert_Leadbr:Albert_Lea_Public_Library
1“Albert Lea …”
1“Albert Lea …”
1 > j(𝑄𝑖, 𝐿𝑖)
Q: “Albert Lea”Challenge 1: Local Term FrequencyChallenge 2: Cohesion
𝑆(𝑄𝑖, 𝐿𝑖) = ∑𝑄𝑖𝐿𝑖
22 = 4
A B
𝑆 𝑄𝑖, 𝐿𝑖 = ∑𝑄𝑖𝐿𝑖 if ∑𝑄𝑖𝐿𝑖 = 1
Approach
![Page 39: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/39.jpg)
Field Weight
39LiberAI
Challenge 1: Local Term FrequencyChallenge 2: CohesionChallenge 3: Scoring Function
0
500
1000
1500
2000
2500
1 2 3 4 5 6
*PThe answer!!
Approach
![Page 40: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/40.jpg)
Pipeline
40
Query
Entity Candidate Generation
Ranking
Result
Query Expansion
LiberAI
Evaluation
![Page 41: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/41.jpg)
Benchmark
41LiberAI
Evaluation
![Page 42: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/42.jpg)
DBpedia-Entity
42LiberAI
Evaluation
![Page 43: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/43.jpg)
QALD-4
43LiberAI
Evaluation
![Page 44: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/44.jpg)
Conclusion & Future Works
44LiberAI
• We have shown a promising algorithm that outperform state-of-the-art ER engines on standard benchmarks by addressing:
o Local Term Frequency;o Cohesion, and;o Score Function problems
• It is still too soon to trace conclusions (law of small numbers)achieves that• Improve the algorithm runtime so it can be used at scale
![Page 45: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/45.jpg)
Acknowledgements
45
LiberAI
@theLiberAI @HTWKLeipzig @edgardmarx @akswgroup
![Page 46: DBtrends Exploring Query Logs for Ranking RDF Data · 2019-09-19 · Edgard Marx, Gustavo Publio & Thomas Riechert LiberAI. 2 ... Framework (RDF) Unstructured Linked Data Structured](https://reader030.fdocuments.in/reader030/viewer/2022041019/5eced54a9515787d42006263/html5/thumbnails/46.jpg)
Acknowledgements
46
@theLiberAI @HTWKLeipzig @edgardmarx @akswgroup
Thank you!!!* 100+ GitHub stars
* 40+ forks