Top-Down Influences on Bottom-Up Processing.
Abstract
Although perception is the subject of extensive study, there has been no formal definition of this state. We offer one, and show how even a rather simple formal conceptualization of a percept entails a considerable amount of machinery. Over the past year or two, several components of the machinery required have been studied. These include (1) the role of especially powerful features, called 'Key Features', and (2) how perceptual categories incorporate world knowledge. There also has been progress in understanding preferences for certain structures, as well as in the dynamics of altering preferences (Chaos in Percepts).... Vision, Al, Cognition, Neurophysiology, Visual psychophysics, Dynamical systems.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 12, 1993
- Accession Number
- ADA261514
Entities
People
- Whitman Richards
Organizations
- Massachusetts Institute of Technology