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VideoJogos 2011
COLLABORATIVE NEGOTIATED DELIBERATION PROTOCOL FOR MANAGING EMERGENT NARRATIVES IN EDUCATIONAL ENVIRONMENTS
Cláudia Ribeiro
© Cláudia Ribeiro- 2011
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VideoJogos 2011
Context• Interactive Storytelling chanlleges
© Cláudia Ribeiro- 2011
Interactive Drama is a computer- based fiction where a user chooses most of the actions for the main character in a story. This is a hard challenge, because it involves both the dynamic
generation of narrative events and the integration of user inputs within the generation.
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VideoJogos 2011
Context• Narrative Structures• Linear Structure• Branched Structure
© Cláudia Ribeiro- 2011
Branched Narrative Structure
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VideoJogos 2011
Context• Emergent Narratives
© Cláudia Ribeiro- 2011
The Player is not limited in his possibilities to influence the story
Unscripted narrative that emerges directly from the virtual and user-controlled characters. (Aylett 1999).
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VideoJogos 2011
Context• Drama Management
© Cláudia Ribeiro- 2011
The use of Emergent Narratives implies the existence of a Drama Manager (DM) (Szilas 2003).
There’s no guarantee that the stories that will emerge are interesting and meaninfull...
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VideoJogos 2011
Context• Drama Management
© Cláudia Ribeiro- 2011
Guiding the low-level behaviour of a set of autonomous agents around a story context, taking into account the
user interaction.
Guiding the plot unflod from a high-level view, interacting with the several story elements: actors,
world elements, etc.
Character-based
Plot-based
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VideoJogos 2011
Context• Drama Management – Hierarchical View
© Cláudia Ribeiro- 2011
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VideoJogos 2011
Context• Drama Management – Cooperative View
© Cláudia Ribeiro- 2011
Agents initiative
Drama Manager initiative
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VideoJogos 2011
• Key Benefits :• Rapid Competence Development• Acquisition of complex and soft competences• Aimed at organization integration• Digital natives ready
© Cláudia Ribeiro- 2011
TARGETT r a n s f o r m a t i v e , A d a p t i v e , R e s p o n s i v e a n d e n G a g i n g E n v i r o n m e n T
A F P 7 I n t e g r a t e d P r o j e c t i n T e c h n o l o g y E n h a n c e d L e a r n i n g
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VideoJogos 2011
Story landscape• In order to effectively manage the drama, it’s important to understand the impact of the player actions in the story unfold.
© Cláudia Ribeiro- 2011
Story Landscape (Louchart 2008)
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VideoJogos 2011
Fabula Model
© Cláudia Ribeiro- 2011
Fabula Model (Swarje et al in 2006)
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VideoJogos 2011
Fabula Model revisited• Perception Elements (Perception, Event, Internal Element)• Decision Elements (Goal, Action)
© Cláudia Ribeiro- 2011
Goal Action
Perception EventsInternal
Elements
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VideoJogos 2011
Plot Guidance Process
Story Annotatio
n
Case Matching
Guidance Protocol
© Cláudia Ribeiro- 2011
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VideoJogos 2011
Plot Guidance Process• Story Annotation
© Cláudia Ribeiro- 2011
time
N1
N2 N1
N1 N4
N3
N2
N5N6
N1N2
N3
N4
Game events
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VideoJogos 2011
Plot Guidance Process• Case Matching
© Cláudia Ribeiro- 2011
N2
N5N6
N1
N3
N4
Current Story graph
Narrative Cases
Match
Narrative cases previously defined by pedagogical and domain experts.
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VideoJogos 2011
Graph matching strategies • Number of common nodes
© Cláudia Ribeiro- 2011
Node A
Node B
Node C
Node D
Node G
Node H
Node A
Node I
Node B
… …
Match Confidance Level = 50%
Narrative Case:
Story Graph:
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VideoJogos 2011
Graph matching strategies • Different between the expected and the real distance
© Cláudia Ribeiro- 2011
Node A
Node B
Node C
Node D
Node G
Node H
Node A
Node I
Node B
… …
Match Confidance Level = 50%
Narrative Case:
Story Graph:
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VideoJogos 2011
Graph matching strategies • Number of common nodes taking into account the weight
© Cláudia Ribeiro- 2011
Node A
Node B
Node C
Node D
Node G
Node H
Node A
Node I
Node B
… …
Match Confidance Level = 40%
Narrative Case:
Story Graph: Weight = 100
Weight = 20
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VideoJogos 2011
Plot Guidance Process• Case Matching
© Cláudia Ribeiro- 2011
N2
N5N6
N1
N3
N4
Current Story graph
Narrative Cases
Match
Narrative cases previously defined by pedagogical and domain experts.
Confidance level = 20%
Confidance level = 31,5%
Confidance level = 60%
Confidance level = 75%
Confidance level = 0%
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VideoJogos 2011
Plot Guidance Process• Guidance Protocol
© Cláudia Ribeiro- 2011
Synchronize beliefs
Goal Negotiation
Plan Negotiation
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VideoJogos 2011
Plot Guidance Process• Guidance Protocol
© Cláudia Ribeiro- 2011
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VideoJogos 2011
Guidance Protocol• Goal negotiation
© Cláudia Ribeiro- 2011
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VideoJogos 2011
Guidance Protocol• Plan negotiation
© Cláudia Ribeiro- 2011
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VideoJogos 2011
Conclusions
© Cláudia Ribeiro- 2011
Supports Emergen
t Narrative
s
The ability to represent dramatic situations
The ability to infer knowledge about the story
unfoldThe ability to
use this knowledge to
guide the player through
meaningful experiences