The first session r3ight after the keynote is on Hypermedia Application Design. The first speaker is Allan Hansen (fah AT daimi.au.dk) who also presented HyCon yesterday. His talk is on Ubiquitous Annotation Systems: Technologies and Challenges. Digital textual annotations are well understood, but what about digital annotations in the physical world? The issues involve what technologies are required, what input and output devices are needed? There are already anchors for hypermedia resources like XPath and XPointer. There are also anchors for physical resources like positioning sensors and RFID tags, for determining IDs of devices that are attached to physical resources. Anchor based models can be used to integrate with open hypermedia systems. This is a survey talk, looking at existing annotation systems. The presentation of the annotations can be done using mashups like annotated Google maps, and the annotations can be attached or detached to the object, and on or off location.
The second speaker is Paul De Bra and he is talking about The Design of AHA! I wondered what does AHA mean, like some kind of eureka moment. But AHA stands for adaptive hypermedia applications. His presentation is being done with hypertext, using a browser, where the agenda items are hyperlinks. None of the talks are done in hypertext, he says we are doing things wrong, we should publish things in hypertext, so hypertext papers should be done in hypertext. Adaptive hypermedia is more than just e-learning and recommender systems, it can be used for adaptive hypermedia research papers and talks. This is an interesting talk, the talk is being presented based on what agenda item to go first. So, now we are in the Stability part of the talk. Too much adaptation in hypermedia documents is not good and will cause it to be unstable because it becomes like an adventure game. The next item in the talk that we are going to is link adaptation. The AHA system suggests what are the next items to go to depending on where you are in the talk or paper. Users can create concepts and concept relationships using their graphical tool and user model updates are done using event-condition-action rules. Depending on the user model, you need to select the destination link and stylesheets are generated to colour the links appropriately. If you share URLs, then the URL that another person sees will be adapted according to his or her user model. Wikipedia doesn't do adaptive hypermedia because of performance, if they did, then it requires more resources and you can't do server-side caching, they would need to add more servers.
The third presentation is Journey to the Past: Proposal of a Framework for a Past Web Browser presented by Adam Jatowt. This is an interesting talk, because it's nice to see what stuff happened before in the past, and history is an important part of human studies. How many times do you want to find some past content, but then it doesn't exist anymore because it was changed or removed from the web site. Of course, Google does do archiving and other archiving sites do that, but there is no way to navigate to a past web site for example. Like I had a previous web site a year ago, but it would be difficult to find it as it exists right now. So this is the motivation for a past web browser. One could also combine this with the current web browser to make a mixed web browser.
Technorati tags: hypertext2006
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