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Pattern Recognition Theories Presentation

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Pattern Recognition 2 Chapter 2 Theories of Pattern Recognition ◼ Structural ◼ Template ◼ Fixed Information-processing Models of Visual Pattern Recognition ◼ WHOLE-REPORT PROCEDURE If 5, report 4.5 letters ___________ Information-processing Models of Visual Pattern Recognition ◼ WHOLE-REPORT PROCEDURE  Why only 4.5 letters? ◼ Inability to perceive (recognize) more letters ◼ Inability to remember more letters?  Sperling: can recognize most letters, but forget some Information-processing Models of Visual Pattern Recognition ◼ PARTIAL-REPORT PROCEDURE Attempts to separate amount percieved from amount measured Information-processing Models of Visual Pattern Recognition ◼ PARTIAL-REPORT PROCEDURE Average: with no delay, 3/4 letters; estimate 9/12 Information-processing Models of Visual Pattern Recognition ◼ PARTIAL-REPORT PROCEDURE Information-processing Models of Visual Pattern Recognition ◼ PARTIAL-REPORT PROCEDURE  Demonstrated the importance of visual sensory store ◼ When subjects heard the tone, they selectively attended to the cued row ◼ As the delay increased before given the tone, the information in the sensory store was decaying Information-processing Models of Visual Pattern Recognition ◼ Sperling’s Model of Pattern Recognition (1963) 1. Visual Information Store (VIS) ◼ ◼ Preserved photographic info for a brief period (250 msec) – ? ...
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