MASH (Multi-model Adaptive Spatial Hypermedia) Luis Francisco-Revilla Ph.D. Proposal Defense April 10 th, 2002

Agenda 1.Goals 2.Problem 3.Approach 4.User Scenario 5.Related Work 6.Plan 7.Summary 8.Questions

Goals Research the use of Adaptive Spatial Hypermedia (ASH) as a way to support ambiguity Research the use of multiple models for adaptation of ASH systems Find out an appropriate conflict resolution mechanism for multi-model systems Determine the kind of transformations appropriate for ASH systems

Problem Deliver the right information in a contextually correct fashion with the ability to scale and migrate through domains and time

Approach: General Use Multi-model Adaptive Spatial Hypermedia 1.Hypermedia 2.Adaptive 3.Multi-model 4.Spatial

Approach: Adaptive Hypermedia Human actions are situated, thus adaptation is required Traditional approaches use only a user model –Highly complex models –Rigid adaptation –Brittle to context

Transformation POSH document POSH‘ document MASH Resolution User agent Mod el Situation agent Mod el Goal agent Mod el Other agents Mod el Approach: Multi-Model Adaptivity Multiple models facilitate: –Robust adaptation –Ability to migrate –Scalability Possible Conflicts Ambiguity

Approach: Spatial Hypermedia Presentation Oriented Spatial Hypermedia (POSH) Greater representational capability for subtle nuances –Links that “ might be ” –Implicit links and relationships Support ambiguity and fluid formalization of the information. –Reduces possible conflicts New and different adaptation techniques

Approach: Adaptation Ontology Extension to Brusilovsky’s classification scheme Methods –High level –Multiple implementation possibilities Techniques –Low level –Explicit implementations

Approach: Adaptation Ontology Semantic –What information should be shown and how Relational –How to show the information such that it is appropriately accessible Formalization –How formal are the relationships between the information components (links) Meta-adaptation –Inter-model interactions can be varied and adapted in an extensible way

User Scenario HACE/HAPE –Preparation Situation:Normal Task:Learning User:New climber –Approach to mountain Situation:Normal Task:Check-up User:Guide / Other climber –HACE/HAPE Situation:Emergency Task:Treatment User:Guide / Other climber

User Scenario HACE/HAPE (continued) –Transport to hospital Situation:Emergency Task:Transport User:Other climber –Post expedition evaluation and explanation Situation:Normal Task:Revision update/ exploration / learning User:Other climber

Related Work Adaptive Hypermedia –User Model –Information Components –ORIMUHS, PUSH, MMA Spatial Hypermedia –Relative spatial position –Implicit links –Aquanet, gIbis, VIKI, VKB, Vite

Related Work Visual Design –Tufte robust design practices –Mackinlay Automatic generation of presentations Compositional algebra Agents –Multi Agent Systems Conflict resolution Coordination of actions

Plan 1.Theoretical work 2.System implementation 3.Construction of user scenario 4.Test and evaluation 5.Analysis and conclusions 6.Writing

Summary: Novelty and Deliveries Create 1 st MASH system Devise an ontology of adaptation for Adaptive Spatial Hypermedia (ASH) Test results of the methods and techniques for adaptation in MASH systems

Questions?