Task 5 Flashcards
What is a statement of ACT-R theory, that is against the logic of connectionism and gestalt psychology?
Intelligence is not more than the sum of its parts
Which types of memory exist in ACT-R?
Declarative and Procedural
How is procedural and declarative knowledge represented in ACT-R?
- Declarative – Chunks – isa-pointers indicating aspects of the knowledge structure
- Procedural – Production Rules
What is production compilation?
The making of production rules form existing chunks
What does is mean that ACT-R is a sensationalist theory?
That its knowledge comes from perceiving the environment
What three types of theories does ACT-R use to sense the environment?
Spotlight, Feature-Synthesis and Attentional
How many goals are popped at a time from the goal stack?
One
What is something that decreases ACT-R’s psychological plausibility?
The infinite number of possible sub-goals stored in the goal stack
What is a sacrifice that cognitive modeling makes, in order to increase practicality?
Neurological precision
Outline the procedure of cognitive modeling
- Reformulating a psychological theory mathematically
- Researching some of the numerical parameters for the completion of step 1 empirically
- Compare ability of resulting models to explain real-life data
- Use results to reformulate the theoretical framework
What is a reason for which people might choose cognitive instead of neural modeling?
In order to simulate higher order phenomena using neural models, a very high computational power is needed
How is knowledge deployment in ACT-R related to Bayesian Inference?
In order to select the situationally most useful knowledge chunks, general usefulness as well as contextual appropriateness are calculated
What is a retrieval request?
When a production rule fires, which requires a chunk to be activated