COGS 100 Lecture Notes - Facial Recognition System, Frame Problem, Parsing

• School: Simon Fraser University
• Department: Cognitive Science
• Course: COGS 100
• Professor: Michael Picard

Document Summary

The computational level is the privileged level of explanation. It cannot work as a general model of cog. Marr"s model is only applicable to modular systems. It requires an indo-processing task sufficiently circumscribed to be solvable algorithmically. Algorithms must be computationally tractable there can only be a limited number of representational primitives and parameters (on pain of frame problem) Basic idea modular systems are specialized for carrying out very specific info-processing tasks. Differ over the extent to which the system ( ) Syntactic parsing of heard utterances modularity and computational analysis. Computational analysis can only work for systems performing ( ) This is an early network model of vision. Retinal is composed of certain sensory (s-units) The output device is for response (r-unit) The a-units are in hidden inner layers. This device is called an elementary perceptron. This is the basic form of a simple neural net, with one inner or hidden layer.