Version 20 (modified by sauermann, 13 years ago) (diff)


Welcome to

This Website is a platform for researchers and practitioners about user context. In our view, user context is the things that influence knowledge work. Through user observation a context-sensitive application can detect the user's current work context and support the user with suggestions and other services.

The main and first goal of this place is to discuss and build up a UserContextOntology. A top-level RDF Schema for modeling and processing user context. Besides mere user context data the UserContextOntology will also provide operators and comparators for that data. Hence, two parties can share their user context data and will be able to understand and process the user context information at least on the upper level we define here. A secondary goal is implementations and projects that observe the user and collect user operations, and implementations that calculate the current user context, and applications that make use of this for the benefit of the end user.

So, what you can find here soon is this:

  • Wiki: for (a) diskussion and (b) documentation
  • Ontology/Ontologies: Data schema(s) - most probably in RDFS
  • Sources: Interfaces containing operators, comparators, similarity measures, etc. working on the data - at the beginning this will be in Java only
  • Links to project pages of this usercontext group
  • Relevant material (papers) of this usercontext group
  • Maybe: Relevant external material (papers) which will be closed to the world (e.g. PDFs of AAAI workshops which must not be published)

Later on we will host more on this site:

  • Test and example code working with the UserContextOntology.
  • Sources of or links to working implementations of user context aware systems / modules - you could call them ReferenceImplementations.
  • Maybe: sources of and links to open-source projects for user context aware systems (or the open-source parts/modules of them).

The website is still under construction, and, while evolving it will be only available for a closed group: the participants of the "Modeling and Retrieval of Context" workshops plus some more selected persons. As soon as there is some meaningful material here we will open up the gates for the whole world.

*new* : 2007-04-19: The UserObservationHub project is now hosted on this website. The UserObservationHub - shortly, UOH (pronounce "oh-oh!" ;-)) ist a *tiny* project and service catching several registered user observation evidences and notifications (e.g., from and passes them on to interested listeners. So, there's multiple input sources to the UOH providing observed user operations and multiple output targets getting notified by the UOH -> these are "user observation listners".

Projects that observe the user

Persons involved in this project

  • Sven Schwarz (initiator)
  • Philipp Mohr
  • Lorcan Coyle
  • Leo Sauermann (code contributions, nepomuk integration)
  • Julien Gaugaz (ontology modelling)
  • Gianluca Demartini (ontology modelling)
  • Michal Kopycki (author of PAS logger)

Useful Links to follow from here

SVN, source-code, ontologies ("Browse Sources" button/tab at the top-right) allows browsing the "sources" (including ontologies and whatever data). Mind, that this should only be used for taking a short look or overview over what's there.

Working with the sources should be done using an SVN client (e.g. subclipse: an eclipse plugin, or svn: at the command line). The URL for the SVN repository is                to be used as repository in subclipse; alternatively:     for one specific project

As you can see, is used for SVN while is the webfrontend for SVN.

AboutTrac links to the original start wiki page of this TRAC framework.