
	Where results make sense

Topic: Receiver operating characteristic

Related Topics

False positive

NVIDIA

TESOL

Eucosmodon

Laocoon and his Sons

Baron Audley of Hely

480s

	Receiver Operating Characteristic Curves
		A receiver operating characteristic (ROC) curve can be constructed by varying the cutpoint that determines which estimated event probabilities are considered to predict the event.
		A plot of the ROC curve can be constructed by using the PLOT or GPLOT procedure with the OUTROC= data set and plotting sensitivity (_SENSIT_) against 1-specificity (_1MSPEC_).
		The area under the ROC curve, as determined by the trapezoidal rule, is given by the statistic c in the "Association of Predicted Probabilities and Observed Responses" table.
	www.asu.edu /it/fyi/dst/helpdocs/statistics/sas/sasdoc/sashtml/stat/chap39/sect33.htm (274 words)

	Receiver operating characteristic - Wikipedia, the free encyclopedia
		In signal detection theory, a receiver operating characteristic (ROC), also receiver operating curve, is a graphical plot of the sensitivity vs. (1 - specificity) for a binary classifier system as its discrimination threshold is varied.
		ROC curves are used to evaluate the results of a prediction and were first employed in the study of discriminator systems for the detection of radio signals in the presence of noise in the 1940s, following the attack on Pearl Harbor.
		In engineering, the area between the ROC curve and the no-discrimination line is often preferred, because of its useful mathematical properties as a non-parametric statistic.
	en.wikipedia.org /wiki/Receiver_operating_characteristic (661 words)

	The Receiver Operating Characteristic (ROC) Curve
		Receiver Operating Characteristic (ROC) curves plot the sensitivity of a test versus its false positive rate for various points (definitely present, probably present to definitely absent) and is especially applicable when test results are interpreted subjectively.
		ROC curves were developed in the 1950's as a by-product of research into making sense of radio signals contaminated by noise.
		This type of graph is called a Receiver Operating Characteristic curve (or ROC curve.) It is a plot of the true positive rate against the false positive rate for the different possible cut points of a diagnostic test.
	www.mlahanas.de /MOEA/Med/ROC21.htm (1831 words)

	RECEIVER OPERATING CHARACTERISTIC (ROC) LITERATURE RESEARCH
		Receiver operating characteristic rating analysis: Generalization to the population of readers and patients with the jackknife method.
		Nonparametric and semiparametric estimation of the receiver operating characteristic curve.
		Receiver operating characteristic analysis: Application to the study of quantum fluctuation effects in optic nerve of rana pipiens.
	splweb.bwh.harvard.edu:8000 /pages/ppl/zou/roc.html (4429 words)

	Korean Journal of Radiology (Site not responding. Last check: 2007-10-09)
		The receiver operating characteristic (ROC) curve, which is defined as a plot of test sensitivity as the y coordinate versus its 1-specificity or false positive rate (FPR) as the x coordinate, is an effective method of evaluating the performance of diagnostic tests.
		The nonparametric estimate of the area under the empirical ROC curve is the summation of the areas of the trapezoids formed by connecting the points on the ROC curve.
		It estimates the smooth ROC curve and its AUC, 95% CI of AUC, and the parameters a and b on the basis of a binormal distribution.
	www.kjronline.org /abstract/view_articletext.asp?year=2004&page=11 (3881 words)

	Systematic reviews in health care: Systematic reviews of evaluations of diagnostic and screening tests -- Deeks 323 ...
		Receiver operating characteristic curves are used in studies of diagnostic accuracy to depict the pattern of sensitivities and specificities observed when the performance of the test is evaluated at several different diagnostic thresholds.
		Figure 1 is a receiver operating characteristic curve from a study of the detection of endometrial cancer by endovaginal ultrasonography.
		Receiver operating characteristic plots are used in systematic reviews to display the results of a set of studies, the sensitivity and specificity from each study being plotted as a separate point in the receiver operating characteristic space
	bmj.bmjjournals.com /cgi/content/full/323/7305/157 (3515 words)

	Accuracy of Transvaginal Ultrasonography in Diabetic or Obese Women With Postmenopausal Bleeding -- van Doorn et al. ...
		Receiver operating characteristic curve illustrating the performance of the endometrial thickness measured by transvaginal ultrasonography in the detection of a (pre)malignancy of the endometrium.
		Receiver operating characteristic curve stratified for the presence of hypertension.
		Receiver operating characteristic curve stratified for the presence of obesity.
	www.greenjournal.org /cgi/content/full/104/3/571 (3019 words)

	Stats: ROC curve
		An ROC curve is a graphical representation of the trade off between the false negative and false positive rates for every possible cut off.
		Equivalently, the ROC curve is the representation of the tradeoffs between sensitivity (Sn) and specificity (Sp).
		We are less happy when the ROC curve follows a diagonal path from the lower left hand corner to the upper right hand corner.
	www.childrensmercy.org /stats/ask/roc.asp (1623 words)

	Specialty Laboratories ::: we help doctors help patients
		The ROC curve is generated by plotting the false-positive rate versus the true-positive rate of a test for different cut-off values.
		An ROC curve is a useful tool for technology assessment because it allows for comparing technologies, detecting outliers, and finding the optimum operating point of a test.
		However, ROC plots do not directly incorporate the effect of prevalence or the value of the possible test outcomes on test performance, which are two important factors in the practical utility of a diagnostic test.
	www.specialtylabs.com /books/display.asp?id=1103 (587 words)

	Receiver Operating Characteristic Curves
		ROC curves were developed in the 1950's as a by-product of research into making sense of radio signals contaminated by noise.
		Central to the idea of ROC curves (receiver operating characteristic, otherwise called 'relative operating characteristic' curves) is this idea of a cutoff level.
		ROC curves should be particularly valuable if we can use them to compare the performance of two tests.
	www.anaesthetist.com /mnm/stats/roc (8808 words)

	Accident and Emergency and General Practitioner plain radiograph reporting by radiographers and radiologists: a ...
		Receiver operating characteristic curve comparing clinical specialist radiographer (CSR) A and CSR B for the control group.
		Receiver operating characteristic curve comparing clinical specialist radiographer (CSR) A and CSR B for group E1.
		Receiver operating characteristic curve comparing clinical specialist radiographer (CSR) A and CSR B for group E2.
	bjr.birjournals.org /cgi/content/figsonly/76/901/57 (304 words)

	Internal publication (Site not responding. Last check: 2007-10-09)
		Comments on generalization of Receiver Operating Characteristic analysis to detection and localization tasks (letter to the editor).
		Variance-component modeling in the analysis of receiver operating characteristic index estimates.
		Edwards DC, Metz CE, Nishikawa RM, Hypervolume under the ROC hypersurface of a "near-guessing" ideal observer in a three-class classification task.
	www-radiology.uchicago.edu /krl/KRL_ROC/internal_publications.htm (1298 words)

	Receiver operating characteristic plots to evaluate Guthrie, Wallac, and Isolab phenylalanine kit performance for ...
		Receiver operating characteristic plots to evaluate Guthrie, Wallac, and Isolab phenylalanine kit performance for newborn phenylketonuria screening -- Wang et al.
		The LR (11) corresponds to the slope or tangent of
		The ROC plots for the Guthrie, Wallac, and Isolab assays.
	www.clinchem.org /cgi/content/full/43/10/1838 (2012 words)

	ROC analysis - Wikipedia, the free encyclopedia
		Receiver operating characteristic analysis (ROC analysis) provides tools to select possibly optimal models and to discard suboptimal ones independently from (and prior to specifying) the cost context or the class distribution.
		ROC Analysis is related in a direct and natural way to cost/benefit analysis of diagnostic decision making.
		Widely used in medicine, radiology, psychology and other areas for many decades, it has been introduced relatively recently in other areas like machine learning and data mining.
	en.wikipedia.org /wiki/ROC_analysis (128 words)

	Receiver Operating Characteristic (ROC) Curves (Site not responding. Last check: 2007-10-09)
		Receiver operating characteristic (ROC) curves are used to summarize the accuracy of diagnostic tests.
		The area under the ROC curve (AUC) is a popular summary index of an ROC curve.
		Liu, et al., "Estimating the Area under a Receiver Operating Characteristic (ROC) Curve For Repeated Measures Design", School of Medicine, UCLA (~2002).
	www.ecgcorp.com /avsite/avdocs/ROC.html (204 words)

	Information - KnowledgeIsFun.com
		An important variation identifies information as that which would be communicated by a message if it was sent from a sender to a receiver capable of understanding the message.
		The international standard on Records management, ISO 15489, defines records as "information created, received, and maintained as evidence and information by an organisation or person, in pursuance of legal obligations or in the transaction of business".
		Records may be retained because of their business value, as part of the Corporate memory of the organisation or to meet legal, fiscal or accountability requirements imposed on the organisation.
	www.knowledgeisfun.com /I/In/Information.php (3068 words)

	The Area Under an ROC Curve (Site not responding. Last check: 2007-10-09)
		ROC curves can also be constructed from clinical prediction rules.
		ROC analysis is part of a field called "Signal Dectection Therory" developed during World War II for the analysis of radar images.
		Radar operators had to decide whether a blip on the screen represented an enemy target, a friendly ship, or just noise.
	gim.unmc.edu /dxtests/roc3.htm (557 words)

	CiteULike: Virtual screening workflow development guided by the "receiver operating characteristic" curve ... (Site not responding. Last check: 2007-10-09)
		The "receiver operating characteristic" (ROC) curve method is a well-recognized metric used as an objective way to evaluate the ability of a given test to discriminate between two populations.
		Characterizing both the ability of a virtual screening workflow to select active molecules and the ability to discard inactive ones, the ROC curve approach is well suited for this critical decision gate.
		@article{citeulike:780232, abstract = {The "receiver operating characteristic" (ROC) curve method is a well-recognized metric used as an objective way to evaluate the ability of a given test to discriminate between two populations.
	www.citeulike.org /user/BragilMassoud/article/780232 (461 words)

	Nonparametric and semiparametric estimation of the receiver operating characteristic curve, Fushing Hsieh, Bruce W. ...
		Nonparametric and semiparametric estimation of the receiver operating characteristic curve, Fushing Hsieh, Bruce W. Turnbull
		The receiver operating characteristic (ROC) curve describes the performance of a diagnostic test used to discriminate between healthy and diseased individuals based on a variable measured on a continuous scale.
		GODDARD, M. and HINBERG, I. Receiver operator characteristic ROC curves and non-normal data: An empirical study.
	projecteuclid.org /getRecord?id=euclid.aos/1033066197 (595 words)

	Receiver Operating Characteristic Curves
		A receiver operating characteristic (ROC) curve can be constructed by varying the cutpoint that determines which estimated event probabilities are considered to predict the event.
		A plot of the ROC curve can be constructed by using the PLOT or GPLOT procedure with the OUTROC= data set and plotting sensitivity (_SENSIT_) against 1-specificity (_1MSPEC_).
		The area under the ROC curve, as determined by the trapezoidal rule, is given by the statistic c in the "Association of Predicted Probabilities and Observed Responses" table.
	www.uwm.edu /IMT/Computing/sasdoc8/sashtml/stat/chap39/sect33.htm (274 words)

	Scan North - Police VHF
		Quite simply all this does is monitor the received signal through a number of separate antenna sites and pick out the strongest one before passing it to the controllers console.
		The vehicle mounted receiver can pick up tracker devices from up to 5 miles away and the helicopter mounted one can receive from a much wider distance.
		Often confused with the tracker system, a vhf/uhf alarm is a special type of portable radio transmitter which operates on either the main set channels or more frequently the UHF PR channels.
	www.northumberlandstreet.com /policevhf.html (1308 words)

	by Topics (Site not responding. Last check: 2007-10-09)
		ROC rating analysis: generalization to the population of readers and cases with the jackknife method.
		Monte Carlo validation of a multireader method for receiver operating characteristic discrtet rating data: factorial experimental design.
		Operating characteristics, signal detection, and the method of free response.
	www-radiology.uchicago.edu /krl/KRL_ROC/ROC_analysis_by_topic.htm (1340 words)

	Symposium
		Individual and mean ROC curves are shown to be dramatically inferior to GOC curves for two observers.
		Given a pair of event-conditional theoretical distributions, a transfer function is estimated by pairing the theoretical criteria and empirical rating cutoffs that result in the same values of cumulative probability and cumulative proportion.
		The measures of sensitivity based on the GOC curves closely approximated the theoretical measures of sensitivity, whereas the measures based on mean ROC curves were poor approximations to the theoretical measures.
	www.psychokiwi.org /symposium93.htm (1407 words)

	Receiver Operating Characteristic Curves and Their Use in Radiology -- Obuchowski 229 (1): 3 -- Radiology
		operating characteristic (ROC) curve is a plot of the sensitivity
		The points labeled 1 and 2 on the curve correspond to the first and second cut points, respectively, that are defined in the note to Table 1.
		The ROC areas of the two tests are the same at 0.80; however, for the clinically important range (ie, an FPR of less than 0.20), test A is preferable to test B.
	radiology.rsnajnls.org /cgi/content/full/229/1/3 (3764 words)

	Receiver Operating Characteristic curve
		By varying this threshold, and measuring the error on the (maybe artificial) outlier objects, an Receiver Operating Characteristics curve (ROC-curve) is obtained.
		Traditionally the fraction true positive is plotted versus the fraction false positive, as shown in figure 2.1.
		In practical applications, the specific operation point on the ROC curve will not be known at the time of the training of the classifier.
	www-ict.its.tudelft.nl /~davidt/dd_tools/node6.html (345 words)

	Receiver Operating Characteristic analysis for Intelligent Medical Systems - a new approach for finding non-parametric ...
		Receiver Operating Characteristic analysis for Intelligent Medical Systems a new approach for finding non-parametric confidence intervals (2000)
		Potentially, receiver operating characteristic (ROC) analysis could form a basis for the objective evaluation of intelligent medical systems.
		Pointwise ROC Confidence Bounds: An Empirical Evaluation - Sofus Macskassy Smacskas (2005)
	citeseer.ist.psu.edu /490928.html (590 words)

	Receiver operating characteristic curves and optimal Bayesian operating points (Site not responding. Last check: 2007-10-09)
		Receiver operating characteristic curves and optimal Bayesian operating points
		The receiver operating characteristic curve is a standard method for reporting the performance of a system.
		In this paper we show how do choose the optimal operating point when we are given a receiver operating curve, the prior probabilities, and the economic gain matrix.
	csdl.computer.org /comp/proceedings/icip/1995/7310/03/73103256abs.htm (161 words)

Try your search on: Qwika (all wikis)