Results 261 to 270 of about 91,384 (299)
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On the Accuracy of Simulated Percentage Points
Journal of the American Statistical Association, 1983Abstract Two methods are discussed of obtaining percentage points of distributions by Monte Carlo studies, one using one long run, the other using the average of several smaller runs. The single run has certain advantages that we describe. The two methods are illustrated on percentage points of the normal distribution.
J. M. Juritz +2 more
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Classification accuracy and cut point selection
Statistics in Medicine, 2012In biomedical research and practice, quantitative tests or biomarkers are often used for diagnostic or screening purposes, with a cut point established on the quantitative measurement to aid binary classification. This paper introduces an alternative to the traditional methods based on the Youden index and the closest‐to‐(0, 1) criterion for threshold ...
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Point-to-point control of a high accuracy positioning mechanism
Proceedings of the 1997 American Control Conference (Cat. No.97CH36041), 1997Compares three open-loop command generating methods for the point-to-point control of a wafer stage. Whereas the theoretical time-optimal bang-bang force command results in excessive residual vibration due to excitation of resonant modes, shaped force profiles have the property not to excite these modes while still allowing for fast movements. The most
D. De Roover, F.B. Sperling
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Floating-point computation of functions with maximum accuracy
1975 IEEE 3rd Symposium on Computer Arithmetic (ARITH), 1975Algorithms are given that compute multiple sums and products and arbitrary roots of floating-point numbers with maximum accuracy, The summation algorithm can be applied to compute scalar products, matrix products, etc. For all these functions, simple error formulas and the smallest floating-point intervals containing the exact result can be obtained.
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Accuracy of interpreting pointing gestures in egocentric view
Proceedings of the 2016 ACM International Joint Conference on Pervasive and Ubiquitous Computing, 2016Communicating spatial information by pointing is ubiquitous in human interactions. With the growing use of head-mounted cameras for collaborative purposes, it is important to assess how accurately viewers of the resulting egocentric videos can interpret pointing acts.
Deepak Akkil, Poika Isokoski
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Contribution of tactile information to accuracy in pointing movements
Experimental Brain Research, 2001We examined the contribution of tactile cues to accuracy during point-to-point movements. We used a task in which the experimenter guided either the left or right hand of the subject to a spatial location during the reference movement. During the subsequent test movement subjects were asked to point with the right hand to the remembered location ...
A K, Rao, A M, Gordon
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Automatic evaluation of the accuracy of fixed-point algorithms
Proceedings 2002 Design, Automation and Test in Europe Conference and Exhibition, 2003The minimization of cost, power consumption and time-to-market of DSP applications requires the development of methodologies for the automatic implementation of floating-point algorithms in fixed-point architectures. In this paper a new methodology for evaluating the quality of an implementation through the automatic determination of the Signal to ...
Menard, Daniel, Sentieys, Olivier
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On the accuracy of point curvature estimators in a discrete environment
Image and Vision Computing, 1994Abstract Points of maximum curvature are commonly believed to be the most perceptually significant points on digital curves, and as such have been used as shape features in both 2D and 3D object recognition by many researchers. We have experimented with several different measures of digital curvature, and have found them to be unreliable in the ...
D. P. Fairney, P. T. Fairney
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Herschel Pointing Accuracy Improvement
SpaceOps 2012 Conference, 2012For the Herschel Space Observatory, launched on May 14, 2009, as part of the ESA Horizon 2000 Science Program, one critical aspect is the pointing accuracy as provided by the Attitude Control and Monitoring System (ACMS). After verification of the in-orbit performance of the ACMS during the Service Module Commissioning Phase, which revealed and ...
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Accuracy of a Freezing Point Depression Technique Osmometer
Optometry and Vision Science, 2015ABSTRACT Purpose The purpose of this study was to examine the precision and accuracy of the Fiske 110 Osmolarity System under different protocols to determine the possible applications of this device in tear film research and clinical practice.
Hugo, Pena-Verdeal +4 more
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