Research Items

Warum wird Annotiert?

FranzWirl — Tue, 16 Feb 2010 10:50:05 +0000

http://mstrohm.wordpress.com/2009/04/05/why-do-users-tag-detecting-user-motivation-in-tagging-systems/

“If we can identify the functions of extreme user motivation “(ideal” Categorizers and Describers), and position real user motivation between those extremes, we might be able to come up with scores indicative of user motivation in tagging systems – e.g. a user might be 80% Categorizer, and 20% Describer. Having such a model could help exploring the implications of different user motivations outlined above. ”

Interessanterweise kommen bei meinen Ergebnissen heraus, dass die Benutzer besonders beim Anlegen auf “einfache” Methoden zum Annotieren setzten, die kurze Beschreibungen ermöglichen. Beim Abrufen von Annotationen (wenn der original Text gelesen wird) werden einfach Text Kommentare als Annotation bevorzugt. Einzig und alleine für die Suche könnten genauere Kategorien sinnvoll sein.

Visit at Austrain National Library

FranzWirl — Tue, 19 Jan 2010 14:22:49 +0000

Yesterday we visited the Austrian National Library (to be more precise the “Bildarchiv”), where Max Kaiser and his colleges gave us overview regarding their research activities. We learned many interesting things, how Libraries structure and organize their Data and Metadata. They also provided us with insights about their Web Archive projects.

Slides of the presentation of Max Kaiser (http://www.slideshare.net/maxkaiser/europeana-status-metadaten-semantische-interoperabilitt )

[View with PicLens]

Annotations by Google

FranzWirl — Tue, 12 Jan 2010 22:55:16 +0000

Google released their new tool, that allows to annotate content on Webpages. [1] Users can contribute annotations to all Webpages. Annotations can be published, and linked (http://www.google.com/sidewiki/entry/113597143741382940941/id/oEZJa_Sto6sxBfbw1qD-yJ4eTCI) . The full potential of the protocl can be found at http://code.google.com/intl/de/apis/sidewiki/docs/2.0/developers_guide_protocol.html .

Google returns Annotations as Feeds in an atom format. A sample request for all annotations on my webpage (http://www.google.com/sidewiki/feeds/entries/webpage/http%3A%2F%2Fnm.wu.ac.at%2Fnm%2Fwirl/full)

[1]… http://www.google.com/support/toolbar/bin/static.py?hl=en&page=guide.cs&guide=24296

Happy Newton Day

FranzWirl — Wed, 30 Dec 2009 13:03:47 +0000

December 25th is a date to celebrate not because it is the disputed birthday of the “son of God” but because it is the actual birthday of one of the world’s greatest men.
Sir Isaac Newton

http://religurd.wordpress.com/2009/12/23/newton-day/

Use Tags to define access

FranzWirl — Tue, 15 Dec 2009 11:06:41 +0000

Defining access to or rights of a user, isn’t the easiest thing. Beside some minor problems two main problems (in my opinion) still need to be solved:

1) A user needs an easy to use interface to define his rights

2) A user needs to be informed adequate about the impact of the rights he is about to change.

A really nice solution for the problem domain of 1) can be found by Quasthoff ([1],[2],[3]) sowie Müller Prove [4] und Passant [5]

[1] Enlightenment 2.0: Facilitating User Control in Distributed Collaborative Applications

[2] Who Reads and Writes the Social Web? A Security Architecture for Web 2.0 Applications

[3] Why HTTPS Is Not Enough – A Signature-Based Architecture for Trusted Content on the Social Web.

[4] Modell und Anwendungsperspektive des Social Tagging

[5] Enabling Trust and Privacy on the Social Web

Get the Annotation Information right

FranzWirl — Thu, 03 Dec 2009 10:04:00 +0000

What kind of information can be stored using Annotea? see Annotea Protocol description at: http://www.w3.org/2001/Annotea/User/Protocol

What kind of schema should I use for MultiMedia?: http://www.w3.org/2005/Incubator/mmsem/XGR-vocabularies/ and for images? http://www.w3.org/2005/Incubator/mmsem/XGR-image-annotation/

Jane Hunter provided a bunch of good stuff: take a look at http://pubs.or08.ecs.soton.ac.uk/4/2/Hunter_slides.pdf or http://pubs.or08.ecs.soton.ac.uk/4/1/submission_22.pdf

OAI – ORE, harvesting

admin — Thu, 03 Dec 2009 09:47:01 +0000

What is ORE anyway?, see description of the Open Annotation Group: http://www.openannotation.org/resources.html

How to use OAI-ORE in digital libraries see: http://hochstenbach.wordpress.com/2008/05/03/understanding-the-oai-ore-data-model/

Harvesting RDF with OAI? see: https://wiki.ucar.edu/display/esgcet/RDF+Harvesting

Forget disturbing content

admin — Tue, 10 Nov 2009 09:55:14 +0000

Under http://137.208.226.39/pageChanger/ a nice Javascript Library has been released that allows users to select parts of a webpage (in the meanwhile only heise.de). This information can be used to reformat the page to skip disturbing unnecessary content of a webpage.
Known Bugs:
*) Some Encoding Problems

PS: Found some further informa

Co-Annotea

admin — Thu, 29 Oct 2009 11:48:55 +0000

Made some first experiments with Co-Annotea on my WinXP Machine. I experienced some problems annotating a page (the open button didn’t work) so I had to load the page using the open – Menue. Whenever I tried to create an annotation the software (version 1.02515.24021) crashed. Hope to report better results soon.

http://www.itee.uq.edu.au/~eresearch/projects/dart/outcomes/coannotea.php

RDFa vs Microformat

admin — Wed, 28 Oct 2009 14:50:53 +0000

Why RDFa will fail against Microfomats: http://blog.foolip.org/2009/08/23/microformats-vs-rdfa-vs-microdata/

Nice but not at all true abstract about RDFa vs Microfomats by Tomberg: http://sunsite.informatik.rwth-aachen.de/Publications/CEUR-WS/Vol-506/tomberg.pdf

Table 1. Summative comparison of Microformats and RDFa. Better features marked with gray background.

	Microformats	RDFa
*Technological properties*
Can be applied to	HTML, XHTML	In current state for XHTML 2 and limited for XHTML 1
Have useful implementations for end user today	Yes, different add-ons for browsers allow that	Not very useful for end user directly
Can be used in mash-ups	Yes	Yes
Practice using for semantic indexing examples	Google and Yahoo now indexing such microformats as hCard and hReview	Google, US Government Website and Slideshare use RDFa
Standardized	No	Yes
Drawbacks	It is very difficult to use one limited dictionary for all purposes. Because of absence of standards support from developers is more enthusiastic than industrial	Because of finishing of XHTML2 development the perspectives of RDFa are very unclear at the current moment
*Semantic properties*
Vocabulary	Only one	Unlimited amount is possible
Vocabulary can be extended	Yes, but only through community	Yes, freely
Interoperability level	High	Possible only if common vocabularies are used
Possibilities to add semantic value to data	Average	High
*Application for educational needs*
Possible semantic data use	Course’s membership via hCard Learner and Teacher information via hCard Members relations via XFN Course events via hCalendar	Can use any semantic vocabulary that suitable for course description.