LOD introduction and benefits

1. Linked Open Data
許禮峰、蕭鈺融、方怡文

2. Outline
1. Linked Open Data (LOD)
LOD Background
LOD Definition
LOD Star
Open Data
2. Semantic Web
Semantic Web Purpose
Semantic Web Difference
3. Conclusion
4. Reference

3. 1. LOD - Background
Name: Apple
Name: Apple

4. 1. LOD - Background
Name: Apple
Description: Notebook
Name: Apple
Description: Fruit

5. LOD Definition
URI (Uniform Resource Identifier)
URL (locator)
URN (name)

6. LOD Definition
Tim Berners Lee’s 4 Rules
1. Use URIs to denote things.
2. Use HTTP URIs so that these things can be referred to
and looked up ("dereferenced") by people and user
agents.
3. Provide useful information about the thing when its URI is
dereferenced, leveraging standards such
as RDF, SPARQL.
4. Include links to other related things (using their URIs)
when publishing data on the Web.

7. LOD Definition

8. LOD Star
☆
Publish data on the Web in any format (e.g., PDF, JPEG) accompanied
by an explicit Open License (expression of rights).
☆☆
Publish structured data on the Web in a machine-readable format
(e.g., XML EXCEL).
☆☆☆
Publish structured data on the Web in a documented, non-proprietary
data format (e.g., CSV, KML).
☆☆☆☆
Publish structured data on the Web as RDF
(eg Turtle, RDFa, JSON-LD, SPARQL)
☆☆☆☆☆
In your RDF, have the identifiers be links (URLs) to useful data
sources.

9. LOD Star-1

10. LOD Star-2

11. LOD Star-3

12. LOD Star-4

13. LOD Star-5

14. Open Data
Without Permission
Without License

15. Open Data

16. Open Data - I Culture

17. Open Data - Taipei

18. Open Data – g0v

19. Open Data - Extension
https://github.com/bee040811/IcultureOpenData

20. 2. Semantic Web
Tim Berners Lee

21. Semantic Web - Purpose
Find, Share, and Combine information more easily.
The semantic web is a vision of information that can be
readily interpreted by machines
Machines can perform more of the tedious work involved
in finding, combining, and acting upon information on the
web

22. Semantic Web - Difference

23. 3. Conclusion
Machine readable
Links to your data and search engine indices can increase
the visibility of your data
Structured data can be interlinked and become more
useful

24. 4. References
1. Linked Open Data
Wiki：http://en.wikipedia.org/wiki/Linked_data
W3C：http://www.w3.org/TR/ld-glossary/
2. Open Data
I Culture：http://cloud.culture.tw/opendata/
Taipei ：http://data.taipei.gov.tw/
g0v
：http://data.g0v.tw/

25. Q&A

26. THE END