research the past web using web archives - arquivo.pt · tutorial outline research the past web...
TRANSCRIPT
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Tutorial outline
Research the Past Web using Web archives
1. Search and access
− The Past Web: examples and use cases
− Public online services
2. Publish and preserve
− Recommendations to publish preservable information
− How to preserve information collected from the Web
3. Automatic processing
− Interoperability protocols
− Application Programming Interfaces (API)
arquivo.pt/training
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Wayback Syntax
Fast access to Web archived content
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Wayback Syntax – it works on other web archives
http://web.archive.org/web/{Timestamp}/{URL}
http://webarchive.org.uk/wayback/archive/{Timestamp}/{URL}
http://arquivo.pt/wayback/{Timestamp}/{URL}
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Wayback Syntax
{Timestamp} = 20150408103041
{URL} = http://europa.eu
http://arquivo.pt/wayback/{Timestamp}/{URL}
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Wayback Syntax
http://arquivo.pt/wayback/{Timestamp}/{URL}
{Timestamp} = 2015 04 08 10 30 41
14 Digits
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Wayback Syntax
http://arquivo.pt/wayback/{Timestamp}/{URL}
{Timestamp} = 2015 04 08 10 30 41
14 Digits year dayminutes
monthhours
seconds
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Wayback Syntax -
closest date
What if we don’t know the exact timestamp?
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Wayback Syntax – closest date
http://arquivo.pt/wayback/20120000000000/edition.cnn.com
http://arquivo.pt/wayback/20120123074436/http://edition.cnn.com/
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Wayback Syntax – list all archived versions
http://arquivo.pt/wayback/*/sapo.pt
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Wayback Syntax - challenge
1. Closest version: October 2008 of the URL nytimes.com
2. Number of archived versions of the website theguardian.com
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Wayback Syntax – challenge 1
http://arquivo.pt/wayback/20081000000000/nytimes.com
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Wayback Syntax – challenge 2
http://arquivo.pt/wayback/*/theguardian.com
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Wayback Syntax
How about other Web archives?
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Wayback Syntax - challenge
1. Closest version: 2009 of the URL youtube.com in Internet Archive
2. List all archived versions of the website gov.uk in UK Web Archive
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Wayback Syntax – challenge 1
http://web.archive.org/web/20090000000000/youtube.com
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Wayback Syntax – challenge 2
http://webarchive.org.uk/wayback/archive/*/gov.uk
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Application Programming Interfaces
(APIs)
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API – Application Programming Interface
Automatic access
Easy integration
Fast development of new applications
No need to understand core code
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Web Archives APIs
Arquivo.pt API
+ Search by text or by URL
- Only works on Arquivo.pt
Memento TimeTravel API
+ Search in several Web archives
- Only search by URL
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Arquivo.pt API
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Arquivo.pt API
Automatic access
URL search
Text search
Metadata search
arquivo.pt/textsearch
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Arquivo.pt API use case
http://contamehistorias.inesctec.pt/arquivopt/?lang_code=en
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Arquivo.pt API use case
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URL search
(Arquivo.pt API)
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URL search request
List archived versions of the URL:
nytimes.com
offset=0 (first result)
maxItems=50 (number of results)
arquivo.pt/textsearch?versionHistory=nytimes.com
&prettyPrint=true
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URL search response
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URL search request parameter:
offset
offset=50 (firstresult)
maxItems=50 (number of results)
arquivo.pt/textsearch?versionHistory=nytimes.com
&offset=50
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URL search request: maxItems
maxItems=1000 (number of results)
arquivo.pt/textsearch?versionHistory=nytimes.com
&maxItems=1000
&from=2012
&to=2014
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URL search request: from
List archived versions of URL
nytimes.com
With date equal or after:
2010 February 24, at 17h41m30s
arquivo.pt/textsearch?versionHistory=nytimes.com
&from=20100224174130
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URL search request: from to
List archived versions of URL
nytimes.com
With date between:
2010 February 24, at 17h41m30s
And
2015 February 23, at 18h30m01s
arquivo.pt/textsearch?versionHistory=nytimes.com
&from=20100224174130&to=20150223183001
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URL search request: fields
Filter response to show only
URL of the page
Timestamp (tstamp) when it was preserved
arquivo.pt/textsearch?versionHistory=nytimes.com
&fields=originalURL,tstamp
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URL search response: fields
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Text search
(Arquivo.pt API)
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Text search request
Search words euro and 2004.
offset=0 (first result)
maxItems=50 (number of results)
arquivo.pt/textsearch?q=euro 2004
&prettyPrint=true
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Text search request: expression
Search results with expression
“euro2004”
arquivo.pt/textsearch?q=“euro 2004”
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Text search request: exclude word
Search results with words
euro 2004
without word
currency
arquivo.pt/textsearch?q=euro 2004 -currency
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Text search request: type
Search results with words
euro 2004
In files of type:
arquivo.pt/textsearch?q=euro 2004&type=pdf
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Text search response: summary of results
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Text search response: result item
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Text search response field: linkToMetadata
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Metadata search response
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Text search response: linkToExtractedText
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linkToExtractedText: downloads as txt file
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linkToExtractedText: txt file
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Arquivo.pt: application programming example
github.com/arquivo/example-api
Click on example.html
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Head of example.html
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Handler function
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<script src="http://arquivo.pt/textsearch?q=Barack%20Obama&maxItems=5&itemsPerSite=1
&callback=handler">
</script>
Call to Arquivo.pt API
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Arquivo.pt application example
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Arquivo.pt API –challenge
1. Show 15 results instead of only 5
2. List 500 versions of the URL nytimes.com between the years of 2010 and 2011
Update the previous example
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1. Show 15 results instead of only 5
<script src = "arquivo.pt/textsearch?q=Barack Obama &maxItems=15&callback=handler">
</script>
2. List 500 versions of the URL nytimes.com between the years of 2010 and 2011
<script src="http://arquivo.pt/textsearch?versionHistory=nytimes.com
&from=2010&to=2011&maxItems=500&callback=handler"></script>
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Memento TimeTravel API
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Memento TimeTravel API
“Time Travel helps you find and view versions of web pages that existed at some time in the past.
These prior versions of web pages are named Mementos. Mementos can be found in webarchives or in systems that support versioning
such as wikis and revision control systems.”
http://timetravel.mementoweb.org/guide/api/
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Memento TimeTravel API
Memento interoperability protocol.
https://mementoweb.org/guide/rfc/
https://tools.ietf.org/html/rfc7089
http://timetravel.mementoweb.org/guide/api/
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Memento TimeTravel API
Memento
API TimeTravel
Wikipedia
Other Web Archives
Arquivo.pt
Internet Archive
Version control
systems
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Memento TimeTravel JSON API
Search for mementos of the URL
http://nytimes.com
Near the date:
2014 April 29 at 17:56:54
http://timetravel.mementoweb.org/api/json/
20140429175654/http://nytimes.com
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Memento TimeTravel: closest memento
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Memento TimeTravel JSON API
Search for timemaps for the URL
http://nytimes.com
http://timetravel.mementoweb.org/timemap/json/
http://nytimes.com
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Memento TimeTravel JSON API
timemap response list
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Memento TimeTravel JSON API
timemap response
https://web.archive.org/web/19971008182708/http://www.sapo.pt:80/;
rel="first memento";
datetime="Wed, 08 Oct 1997 18:27:08 GMT",
<https://web.archive.org/web/19971210144509/http://www.sapo.pt:80/>;
rel="memento";
datetime="Wed, 10 Dec 1997 14:45:09 GMT",