ROC?

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3 total messages Started by Dan Krider Fri, 18 Dec 1992 17:46

#774

Author: Dan Krider
Date: Fri, 18 Dec 1992 17:46

3 lines
540 bytes

Receiver operating characteristic (ROC) curves are a part of decision  
theory and are used in medical science. Can anyone tell me why it is  
called this (ROC)?

Re: ROC?

#779

Author: Charles Geyer
Date: Sat, 19 Dec 1992 04:53

14 lines
1049 bytes

In article <BzGupn.22x@news.concord.wvnet.edu> dan@krider.concord.wvnet.edu (Dan Krider) writes:
>Receiver operating characteristic (ROC) curves are a part of decision  
>theory and are used in medical science. Can anyone tell me why it is  
>called this (ROC)?

Comes from electrical engineering I believe.  "receiver" means a radio
reciever.  I'm not sure exactly what is plotted against what, but the
point is the same.  If you turn up the sensitivity, you amplify the noise.

-- 
Charles Geyer
School of Statistics
University of Minnesota
charlie@umnstat.stat.umn.edu

Re: ROC?

#781

Author: Michael Kubovy
Date: Sat, 19 Dec 1992 14:57

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charlie@umnstat.stat.umn.edu (Charles Geyer) writes:
>>dan@krider.concord.wvnet.edu (Dan Krider) writes:
>>Receiver operating characteristic (ROC) curves are a part of decision  
>>theory and are used in medical science. Can anyone tell me why it is  
>>called this (ROC)?
>
>Comes from electrical engineering I believe.  "receiver" means a radio
>reciever.  I'm not sure exactly what is plotted against what

Hit rate [p("yes"|signal)] against false-alarm rate [p("yes"|noise)]
when (1) the payoffs for hits, correct rejections, misses, and false
alarms are varied, or (2) the prior probabilities of signal and noise
are manipulated. In psychophysics we are trying to standardize the terminology
to "isosensitivity function."
--
|\  /| / MICHAEL KUBOVY (kubovy@virginia.edu)
| \/ |/		OFFICE: 804-982-4729; LAB: 982-4751; FAX: 982-4766
|    |\ 	   Department of Psychology, Gilmer Hall,
|    | \ 	   Univ. of Virginia, Charlottesville, VA 22903-2477

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