An invited talk about the Web Archiving given in the SPiRIT Research Group at Magdeburg-Stendal University, Germany.

1. Web Archiving
A Brief Introduction
Sawood Alam
Department of Computer Science
Old Dominion University
Norfolk, Virginia - 23529 (USA)

2. About Me
Sawood Alam
Lexical Signature
Web, Digital Library, Web Archiving, Ruby on Rails, PHP,
XHTML, CSS, JavaScript, ExtJS, Urdu, RTL and Linux.
● BTech, Jamia Millia Islamia, India, 2008
● MSc, Old Dominion University, USA, 2013
● PhD, Old Dominion University, USA, Current

3. She Calls Me Dad!

4. Agenda
● Archiving and Web archiving
● Purpose and importance
● Scope of the web archiving
● Issues and challenges
● Tools and techniques
● Memento: Time Travel for the Web
● Archive X-Ray
● Research opportunities in Web archiving
● Our WSDL Research Group

5. What is an Archive?
● Accumulation of historical records
● Long term storage and preservation
● Less frequently used
● Physical or digital

6. What is Web Archiving?
● Periodic snapshots of web pages
● Preserving important events on the Web
● Making archived content accessible

7. Why do We Care Archiving?
Web contents decay rapidly!
● To preserve the history
● To tell a story
● For evidence
● For backup
● For personal satisfaction

8. Issues and Challenges
● Crawling
● Storage
● Retrieval
● Replay
● Accessibility
● Completeness
● Accuracy
● Credibility

9. Web Archiving Efforts
● Internet Archive
● Archive-It
● Wikipedia
● UK Web Archive
● Various national and non-profit archives
● Film, music and other multimedia archives
● Scholarly archives
● Personal archiving

10. Tools and Techniques
● Heritrix, PhantomJS, WGet, cURL
● OpenWayback, PyWB
● TimeTravel, MemGator
● CarbonDate, Warrick, Synchronicity
● Preserve Me!
● WARCreate,WAIL, Mink
● Browsertrix
● And many more...

11. Memento
<http://example.com>; rel="original",
<http://web.archive.org/web/20020120142510/http://example.com/>;
rel="memento";
datetime="Sun, 20 Jan 2002 14:25:10 GMT",
<http://web.archive.org/web/20020328012821/http://www.example.com/>;
rel="memento";
datetime="Thu, 28 Mar 2002 01:28:21 GMT",
<http://webarchive.loc.gov/all/20020803080544/http://www.example.com/>;
rel="memento";
datetime="Sat, 03 Aug 2002 08:05:44 GMT",
<http://wayback.archive-it.org/all/20091213015014/http://www.example.com/>;
rel="memento";
datetime="Sun, 13 Dec 2009 01:50:14 GMT",

12. Archive X-Ray!
● How much of the Web is archived?
● Profiling various archive services
● Predicting what they contain
● Routing Memento aggregator queries

13. Memento Aggregator

14. Memento Aggregator

15. Memento Aggregator

16. Memento Aggregator

17. Memento Aggregator

18. Memento Aggregator

19. Long Tail of Archives

20. Archive Profile
● High-level summary of an archive
● Predicts presence of mementos
● Provides statistics about the holdings
● Small in size and publicly available
● Easy to update and partially patch
● Useful for Memento query routing and
other things
com,cnn)/ {“frequency”: 40, “spread”: 2}
uk,co,bbc)/ {“frequency”: 20, “spread”: 1}
com,usatoday)/ {“frequency”: 5, “spread”: 1}

21. Research Opportunities
● Information retrieval
● Information visualization
● Client and server side archiving
● Archiving dynamic content
● Distributed archiving
● Discovering alternate long term archiving
techniques
● Predicting “Important” events on the Web
and archiving them timely

22. Web Science and Digital
Libraries Research Group
ws-dl.cs.odu.edu
ws-dl.blogspot.com
@WebSciDL
github.com/oduwsdl
flickr.com/photos/124419986@N07

23. WSDL Research Group

24. WSDL Research Group

25. WSDL Research Group

26. WSDL Research Group

27. WSDL Research Group

28. Sawood Alam
Department of Computer Science
Old Dominion University
Norfolk, Virginia - 23529 (USA)
salam@cs.odu.edu
ibnesayeed@gmail.com
@ibnesayeed
www.cs.odu.edu/~salam