David Marr

Quotes

• “To understand the relationship between behavior and brain one has to begin by defining the function, or computational goal, of a complete behavior. Only then can a neuroscientist determine how the brain achieves that goal.”
• “Vision is a process that produces from images of the external world a description that is useful to the viewer and not cluttered with irrelevant information.”
• “A representation is a formal system for making explicit certain entities or types of information, together with a specification of how the system does this. And I shall call the result of using a representation to describe a given entity a description of the entity in that representation.”
• “The critical act in formulating computational theories turns out to be the discovery of valid constraints on the way the world is structured -- constraints that provide sufficient information to allow the processing to succeed.”
• “The primitives of a representation are the most elementary units of shape information available in a representation.”
• “Vision is the process of discovering from images what is present in the world, and where it is.”

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