Semantic Web Presented by Xia Li. 2 Outline Introduction Examples Semantic Web technologies...
-
Upload
lorraine-peters -
Category
Documents
-
view
217 -
download
0
Transcript of Semantic Web Presented by Xia Li. 2 Outline Introduction Examples Semantic Web technologies...
![Page 1: Semantic Web Presented by Xia Li. 2 Outline Introduction Examples Semantic Web technologies Applications Concerns.](https://reader036.fdocuments.us/reader036/viewer/2022062806/5697c0301a28abf838cdad7a/html5/thumbnails/1.jpg)
Semantic Web
Presented by Xia Li
![Page 2: Semantic Web Presented by Xia Li. 2 Outline Introduction Examples Semantic Web technologies Applications Concerns.](https://reader036.fdocuments.us/reader036/viewer/2022062806/5697c0301a28abf838cdad7a/html5/thumbnails/2.jpg)
2
Outline
Introduction Examples Semantic Web technologies Applications Concerns
![Page 3: Semantic Web Presented by Xia Li. 2 Outline Introduction Examples Semantic Web technologies Applications Concerns.](https://reader036.fdocuments.us/reader036/viewer/2022062806/5697c0301a28abf838cdad7a/html5/thumbnails/3.jpg)
3
SW technologies go back to few years ago……
The Semantic Web = a Web with a meaning.
"If HTML and the Web made all the online documents look like one huge book, RDF, schema, and inference languages will make all the data in the world look like one huge database"
--Tim Berners-Lee, Weaving the Web, 1999
![Page 4: Semantic Web Presented by Xia Li. 2 Outline Introduction Examples Semantic Web technologies Applications Concerns.](https://reader036.fdocuments.us/reader036/viewer/2022062806/5697c0301a28abf838cdad7a/html5/thumbnails/4.jpg)
4
So what is the Semantic Web?
In a word, SW is: Next generation Web of data that is understandable by machines. It allows machines to “connect the dots” It provides a common framework to share
data on the Web across application boundaries
![Page 5: Semantic Web Presented by Xia Li. 2 Outline Introduction Examples Semantic Web technologies Applications Concerns.](https://reader036.fdocuments.us/reader036/viewer/2022062806/5697c0301a28abf838cdad7a/html5/thumbnails/5.jpg)
5
Example: data integration in life science
![Page 6: Semantic Web Presented by Xia Li. 2 Outline Introduction Examples Semantic Web technologies Applications Concerns.](https://reader036.fdocuments.us/reader036/viewer/2022062806/5697c0301a28abf838cdad7a/html5/thumbnails/6.jpg)
6
SW Architecture
![Page 7: Semantic Web Presented by Xia Li. 2 Outline Introduction Examples Semantic Web technologies Applications Concerns.](https://reader036.fdocuments.us/reader036/viewer/2022062806/5697c0301a28abf838cdad7a/html5/thumbnails/7.jpg)
7
Example
Data integration
![Page 8: Semantic Web Presented by Xia Li. 2 Outline Introduction Examples Semantic Web technologies Applications Concerns.](https://reader036.fdocuments.us/reader036/viewer/2022062806/5697c0301a28abf838cdad7a/html5/thumbnails/8.jpg)
8
A Simplified Bookstore Data
Dataset “A”:
![Page 9: Semantic Web Presented by Xia Li. 2 Outline Introduction Examples Semantic Web technologies Applications Concerns.](https://reader036.fdocuments.us/reader036/viewer/2022062806/5697c0301a28abf838cdad7a/html5/thumbnails/9.jpg)
9
1st Step: Export your data as a set of relations…
![Page 10: Semantic Web Presented by Xia Li. 2 Outline Introduction Examples Semantic Web technologies Applications Concerns.](https://reader036.fdocuments.us/reader036/viewer/2022062806/5697c0301a28abf838cdad7a/html5/thumbnails/10.jpg)
10
Another Bookstore Data
Dataset “F”
![Page 11: Semantic Web Presented by Xia Li. 2 Outline Introduction Examples Semantic Web technologies Applications Concerns.](https://reader036.fdocuments.us/reader036/viewer/2022062806/5697c0301a28abf838cdad7a/html5/thumbnails/11.jpg)
11
2nd Step: Export Your Second Set of Data
![Page 12: Semantic Web Presented by Xia Li. 2 Outline Introduction Examples Semantic Web technologies Applications Concerns.](https://reader036.fdocuments.us/reader036/viewer/2022062806/5697c0301a28abf838cdad7a/html5/thumbnails/12.jpg)
12
3rd Step: Start Merging Your Data
![Page 13: Semantic Web Presented by Xia Li. 2 Outline Introduction Examples Semantic Web technologies Applications Concerns.](https://reader036.fdocuments.us/reader036/viewer/2022062806/5697c0301a28abf838cdad7a/html5/thumbnails/13.jpg)
13
After merging
“give me the title of the original”
donnes-moi le titre de l’original
![Page 14: Semantic Web Presented by Xia Li. 2 Outline Introduction Examples Semantic Web technologies Applications Concerns.](https://reader036.fdocuments.us/reader036/viewer/2022062806/5697c0301a28abf838cdad7a/html5/thumbnails/14.jpg)
14
So what is then the role of ontologies and/or rules?
We “feel” that a:author and f:auteur should be the same
Add some extra information to the merged data: a:author same as f:auteur both identify a “Person”:
a term that a community has already defined (part of the “FOAF” terminology)
a “Person” is uniquely identified by his/her name and, say, homepage
it can be used as a “category” for certain type of resources
These statements can be described in an ontology (or, alternatively, with rules)
The ontology/rule serves as some sort of a “glue”
![Page 15: Semantic Web Presented by Xia Li. 2 Outline Introduction Examples Semantic Web technologies Applications Concerns.](https://reader036.fdocuments.us/reader036/viewer/2022062806/5697c0301a28abf838cdad7a/html5/thumbnails/15.jpg)
15
Better merge
![Page 16: Semantic Web Presented by Xia Li. 2 Outline Introduction Examples Semantic Web technologies Applications Concerns.](https://reader036.fdocuments.us/reader036/viewer/2022062806/5697c0301a28abf838cdad7a/html5/thumbnails/16.jpg)
16
What did we do?
![Page 17: Semantic Web Presented by Xia Li. 2 Outline Introduction Examples Semantic Web technologies Applications Concerns.](https://reader036.fdocuments.us/reader036/viewer/2022062806/5697c0301a28abf838cdad7a/html5/thumbnails/17.jpg)
17
The Semantic Web for the Agricultural Domain, Semantic Navigation of Food, Nutrition and Agriculture Journal
![Page 18: Semantic Web Presented by Xia Li. 2 Outline Introduction Examples Semantic Web technologies Applications Concerns.](https://reader036.fdocuments.us/reader036/viewer/2022062806/5697c0301a28abf838cdad7a/html5/thumbnails/18.jpg)
18
Conclusion
The semantic web is not as complex as people believe
The semantic web doesn’t require huge investments before seeing its value
Don’t forget privacy: set usage guidelines to safeguard privacy
Don’t expect perfection: they’re far from perfect Don’t be impatient: there must be a multiyear
commitment to have any hope of success
![Page 19: Semantic Web Presented by Xia Li. 2 Outline Introduction Examples Semantic Web technologies Applications Concerns.](https://reader036.fdocuments.us/reader036/viewer/2022062806/5697c0301a28abf838cdad7a/html5/thumbnails/19.jpg)
19
References
http://www.w3.org/2001/sw/ http://www.w3schools.com/semweb/de
fault.asp <Semantic Web Primer>
![Page 20: Semantic Web Presented by Xia Li. 2 Outline Introduction Examples Semantic Web technologies Applications Concerns.](https://reader036.fdocuments.us/reader036/viewer/2022062806/5697c0301a28abf838cdad7a/html5/thumbnails/20.jpg)
20
Thank you for your attention