http://http://copeit.cti.gr/copeit.cti.gr/

Nikos KaracapilidisNikos Karacapilidis

Research Academic Computer Technology Research Academic Computer Technology Institute Institute &&University of Patras, GreeceUniversity of Patras, Greece

Requirements and Requirements and challengeschallenges The The Palette projectPalette project (FP6) – 12 CoPs (FP6) – 12 CoPs Major issuesMajor issues

Cognitive overhead and management of information overload

Different collaboration modes Expression of tacit knowledge Integration of legacy resources Data processing and decision making

support

Our approach (i)Our approach (i) Web based Web based Argumentative CollaborationArgumentative Collaboration

environment to support collective environment to support collective knowledge buildingknowledge building Semi-synchronous collaborationSemi-synchronous collaboration

Basic goalsBasic goals An An integrated considerationintegrated consideration of formalization, of formalization,

visualization and reasoning issuesvisualization and reasoning issues Allow formality to varyAllow formality to vary during the collaboration during the collaboration

session (addressing different collaboration stages) session (addressing different collaboration stages) Incremental formalization of collaborationIncremental formalization of collaboration

Permitting a Permitting a stepwise and controlled evolutionstepwise and controlled evolution of of the collaboration spacethe collaboration space

Our approach (ii)Our approach (ii)

Conceptual architectureConceptual architecture Based on Based on projectionsprojections

A representation of the argumentative A representation of the argumentative collaboration in some evolution stage.collaboration in some evolution stage.

The same collaboration can have different The same collaboration can have different representationsrepresentations

Each projection provides Each projection provides different different abstractionsabstractions and allows different operations and allows different operations

Supports a level of formality (solves the problems of a Supports a level of formality (solves the problems of a particular collaboration stage)particular collaboration stage)

Ability to Ability to switchswitch between projections between projections change change level of formalitylevel of formality

collection &sharing of collaboration items

interrelation & evolution of collaboration items

informal / semiformal argumentation

exploitation of legacy resources

semantic annotation of collaboration items

informal / semiformal aggregation of collaboration items

formal exploitation of collaboration items patterns

formal argumentation and reasoning mechanisms

Informal Formal

collaboration space

projection 2

too

lset

2

projection n

too

lset

n

…projection 1

too

lset

1

Formality

Our approach (iii)Our approach (iii)

Early instance of the collaboration

- desktop metaphor- visual cues- exploitation of legacy resources- user & role modeling- human interpretable

informal projection

Another instance of the collaboration

Filtered view: automatically arranging items

formal projection

- decision making support- reasoning & scoring mechanisms- switching between projections