External Cognition Presentation
Where it pops up
- Problem solving (Diagrams)
- ->Computational offloading
What it is
Intelligence -> ER -> Intelligence (->IR<-) -> Behavior
What is the altnernative?
Symbols -> Intelligence(->IR<-) -> Behavior
Does this work for
External representations aren't necessarily constructed.
- Internal and External States?
Does this lose explanatory power?
"Knowledge in the world"
-->What does this mean?
How it works
What Rogers and Scaife think we need to figure out:
- The properties of the graphical representation (ER)
- The way those properties are represented internally (IR)
- Computational processes that mediate between the two (Intelligence)
Larkin and Simon (1987)
- Data structures that represent the problem (ER)
- Productions that contain knowledge of the domain (IR)
- Attention manager (Intelligence)
Big question: what is being done by the Internal Representation and the External Representation, respectively?
- Are we just "dumping" our IR to the world? (External Memory)
- What if we "dump" the sentence?
- Process (IR+Intelligence) vs. Product (ER)
Producing the ER does most of the work. Once we have a diagram, the eye and the diagram together produce the solution with little effort.
- perceptual inference is easier than symbolic inference
Question: Is this just because of practice?
Goal: Computational Offloading
- Physical constraints
- Implicit relationships
- Only work as far as they can. Plotting phone numbers won't tell you anything.
- Active parsing
- Animation, temporal parsing
Question: Can we look at all behavior in terms of external cognition? How about opening a door?
Question: Does this breakdown work for navigation?
Does it work?
- Interaction between Goal, Format, Knowledge (
- Perceptual inference requires having the intelligence to parse the percepts properly
How it is used
- Educational materials
This page was last updated October 5, 2004 at 2:33am.