Joan C. Nordbotten
|Publications, Degree projects|
Multi- Multimedia Database |
| Data models, Schema and database integration, &
Query languages for Multi Multimedia DB systems,
|Usability studies|| Usage studies of Web-based applications and graphic presentations
Interpretation of graphic models|
Usage profile for a Virtual Museum Exhibit
|Statistical information systems|
Context Aware Image Management,
CAIM 2005-2013: external funding for 2006-2011
There is an exponential growth in the number of images available on the Internet, due in part to expanding capacity and use of broadband networks, as well as a growing number of handheld and PC devices that can access these images. The problem is finding them. This project addresses the dynamic collection and use of context information, particularly from mobile units, to provide support for retrieval from these image collections.
The project currently involves 14 researchers from 3 universities and the Norwegian telecommunications company. Updated information about the CAIM project as well as access to reports and prototypes as they become available can be found on the CAIM project Web-site.
Virtual Exhibits on Demand (VED),
2001-2007: external funding for 2001-2005
Museums worldwide have been deploying virtual exhibits on the Web since the mid '90s. In addition, they have also made their electronic multimedia collections available for use by researchers, educators and students. Our interest lies in developing ICT methods and tools for location and presentation of information from a collection of these autonomous multimedia data sources.
26 researchers and students have worked on this project, producing a number of publications and masters degree theses. More details about the VED project and access to the publications and prototypes can be found on the VED project Web-site.
The ADAM, Accessing DAta in Multi-database systems project provides a framework for our work in multi-multimedia database integration. We are exploring the use of OR-based methods for development of semi-automatic construction of integration schemas and query languages for multi-database access. Theoretical work is being done within the framework of a Multi-database management course and masters degree theses at the University of Bergen. Prototype development is being done within the contexts of the VED and CAIM projects.
|Usability Studies:||Group for Interface Research, GIR|
Web experiments for information perception. Statistical tables, charts, and text are used for information dissemination in newspapers and Internet news services under an implicit assumption that these are generally understood formats for the general public. A primary objective of our work has been to develop a Web-based experiment to study how statistical facts presented in these forms are perceived and interpreted.
Graphic data model legibility. Our experiments indicate that graphic models are not intuitive and used alone are not sufficient tools for either database system requirements confirmation, or reliable database implementation. Further, graphic syntax effects both interpretation time and completeness, such that highly dense models are significantly more difficult to interpret than list structured models.
Usage of hypermedia exhibits.
We have analysed ca. 1200 visitor sessions in an exhibit of research themes in the social sciences.
The data cover 3 populations: general public visitors of a natural science museum,
social science faculty and students, and web users. Our observations show that sessions
were short in both time spent, <2 minutes, and number of pages selected, <6 pages.
Topic selection in the PC exhibit was highly correlated (>0.8) with index placement,
while Web visitors entered the exhibit via search engine key words.
The exhibit can be viewed at
Interfaces to Library Information Systems, ILIS. Internet access to library catalogs and full text documents supports information search without the aid of professional information retrievers. In this situation it is important to know how the traditional, form-based interface functions for untrained information searchers and to test alternative information request formats.