Invited Presentations

Prof. Vincent Wade

“Challenges for the Multi-Lingual, Multi-Dimensional Personalised Web”

It is clear that each individual uses the WWW in different ways that suit their own personal needs and preferences. It is also clear that this use extends far beyond just content, and encompasses many dimensions e.g. tasks & activities, cultural preferences, language and social interaction etc. These dimensions need to be addressed concurrently by any system attempting to deliver personalised web experiences. Adaptive Hypermedia and Adaptive Web research examines the personalised delivery and exploration of content, however, this content has traditionally been closed-corpus in nature, with much less research having been conducted on open corpus content. From a commercial perspective, web adaptivity has been more focused on adaptive content retrieval rather than adaptive content composition. In this talk I will investigate the key challenges facing the Multi-Lingual, Multi-Dimensional Personalised Web. These challenges include: integrated open corpus & service personalisation, cultural adaptivity (including multilingual personalisation), dialogue and simulation personalisation and the power of the crowd, which could greatly empower web users of the future. I will also consider emerging approaches to tackle these problems and examine the connotations for current web based personalisation engines and platforms.

Dr. Nicola Ferro

“Experimental Evaluation and Hypertexts”

The information retrieval field has a strong and long tradition, that dates back to the sixties of the past century, in the experimental evaluation of IR systems in order to assess their performances in a scientifically sound and comparable way. In this context, large-scale international evaluation campaigns, such as TREC (http://trec.nist.gov), CLEF (http://www.clef-campaign.org/), and NTCIR (http://research.nii.ac.jp/ntcir/), have been the vehicle and the conduit for the advancement of state-of-the-art techniques and for the development of innovative information systems through common evaluation procedures, regular and systematic evaluation cycles, comparison and benchmarking of the adopted approaches and solutions, spreading and exchange of knowledge and know-how.
Hypertexts play an important role in the information retrieval field, especially since the growth of the Web has given raise to an unprecedented need for effective information access techniques that take into consideration the multilinguality, multimodality, and hypertextual nature of the relevant information resources. This posed novel challenges for experimental evaluation which has to devise techniques for coping with experimental collections able to mimic the Web scale and for designing evaluation tasks that were representative of user needs on the Web.
This talk will discuss open issues concerning how experimental evaluation and hypertext could be better benefit each other. On the one hand, it is time for experimental evaluation to explicitly take into consideration the hypertextual nature of the resources when assessing performances based on retrieved items and not only considering systems as black-boxes that internally exploit the exiting hypertext. On the other hand, experimental evaluation produces huge amount of scientific data that would be better understood and interpreted if they were enriched with links to each other, to other resources, and to user-generated content, such as annotations explaining them.