Midterm 2 Flashcards
(125 cards)
What is top-down processing?
to start by identifying the way the system solves problems, and the type of representations used.
What is bottom-up processing?
To start at the neural (implementation level) and work your way up to the overall organization of cognition and behaviour
How do you perceive representations?
Have representations inside the mind that stand for things “out there” (in the world)
What do symbols in our mind represent?
Symbols in our mind represent the world, we act on these symbols and move accordingly to them to interact with the world
What is a Semantic Network?
Symbols with coonnections, links, and relations that build our understanding of the world.
What is the Ebbinghaus forgetting Curve?
The Forgetting curve involves the decline of memory over time , it shows how information is lost when there is no attempt to recall it
How does information flow through neurons?
Information is collected through the dendrite and passed down by axon where that info will then be passed onto dendrites of another neuron
How does Neural Network Perception work?
Pixels activate the input layer, output layer identifies the input
How does reward learning work in humans?
It is a process rooted in rooted in our brains reward system. Involves release of NTs such as dopamine when we do something pleasurable or rewarding. Through trial and error, human learn to associate specific actions or choices with these rewarding outcomes
How does reward learning work in Artificial Intelligence?
In AI it is a critical component of reinforcement learning. Reinforcement algorithms use reward signals to update agent’s policy, encouraging it to repeat actions that lead to positive outcomes and avoid negative ones.
What is reverse engineering?
Taking apart an object to see how it works in order to duplicate or to enhance it
What did Newell challenge researchers to do?
To integrate all the fragmented data by building unifying theories
What is Dustbowl empiricism?
An approach to science that consists of making empirical observations and collecting data rather than establishing a theoretical framework
What is Parsimony?
The Parsimony principle tells us to choose the simplest scientific explanation that fits the evidence. Cognitive science is parsimonious because cognitive representations are the first cause of human behaviour
What is the Lakatosian Scientific Framework?
It integrates data under unifying explanations.
What is the Unified Theory of Cognition?
a single set of mechanisms that account for all of cognition including perception and motor control
How do symbols engage with cognition?
Knowledge moves into working memory and directs procedural knowledge
How do sub-symbolic processes work?
Connectionism
What is Meta-knowledge?
A representation that is self-representing or refers to a cognitive property. Meta-knowledge refers to knowledge about knowledge itself
What is Self-Representation?
How a shape or a symbol can represent its own attributes.
What must UTC explain?
- How intelligent organisms respond flexibly to the environment
- How we exhibit goal directed behaviour and choose goals rationally
- How we learn symbols and connectionist information
- How we learn from experience
- How the mind exists as a single system with no supervisor
What are the 2 basic assumptions of UTC and Cognition?
- The mind is too complicated to be understood using the resources of any one discipline (needs to be interdisciplinary)
- The mind needs to be undersrtood at many different levels (need for an integrated multilevel explanation)
What would a complete cognitive architecture do?
it would faithfully depict all human cognitive processes. it seeks to depict all the invisible rooms of the mind
What are the steps in Newell’s level of information processing?
Implementational, Computational, Knowledge