Results 211 to 220 of about 290,952 (260)
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Threshold setting in adaptive filtering
Journal of Documentation, 2000A major problem in using current best‐match methods in a filtering task is that of setting appropriate thresholds, which are required in order to force a binary decision on notifying a user of a document. We discuss methods for setting such thresholds and adapting them as a result of feedback information on the performance of the profile. These methods
Stephen E. Robertson, Stephen Walker
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Threshold adaptation in normal listeners
The Journal of the Acoustical Society of America, 1973Threshold adaptation for 500, 1000, 2000, and 4000 Hz was studied with the Carhart, Rosenberg, and Owens tone decay tests using 40 normal-hearing subjects. Differences in tone decay were evaluated for effects of experimental technique, frequency, hearing level and SPL of the stimuli.
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Adaptive estimation of hysteresis thresholds
Proceedings. 1991 IEEE Computer Society Conference on Computer Vision and Pattern Recognition, 2002It is shown that the hitherto heuristic hysteresis linking idea of J.F. Canny (1986) can be formulated as a Bayesian contextual decision process. This approach draws on an explicit image model which accounts both for the way in which noisy raw-edge information is characterized via filtering operations and how the required edge-connectivity information ...
Edwin R. Hancock, Josef Kittler
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Adaptive Threshold Procedures: BUDTIF
The Journal of the Acoustical Society of America, 1968Consideration of recent psychoacoustic research reveals that, independent of the general acceptance of the theory of signal detectability, threshold methodology continues to play a major rôle in the acquisition of psychoacoustic data. Although adaptive methods are widely used, the newer, finite-trial, adaptive methods are not—possibly owing to a ...
R A, Campbell, E Z, Lasky
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Adaptive Thresholding using the Integral Image
Journal of Graphics Tools, 2007Image thresholding is a common task in many computer vision and graphics applications. The goal of thresholding an image is to classify pixels as either "dark" or "light." Adaptive thresholding is a form of thresholding that takes into account spatial variations in illumination.
Bradley, D., Roth, Gerhard
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Author Clustering with an Adaptive Threshold
2017This paper describes and evaluates an unsupervised author clustering model called Spatium. The proposed strategy can be adapted without any difficulty to different natural languages (such as Dutch, English, and Greek) and it can be applied to different text genres (newspaper articles, reviews, excerpts of novels, etc.).
Mirco Kocher, Jacques Savoy
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Increment thresholds and dark adaptation
Journal of Theoretical Biology, 1964Abstract A quantitative theory of the increment thresholds and dark adaptation of the rod receptors in the human eye has been developed which gives an accurate fit with experimental data from the initial threshold to the saturation level of intensity with various amounts of rhodopsin bleaching.
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Increment Threshold and Dark Adaptation*
Journal of the Optical Society of America, 1963The increment threshold ΔI as a function of the background field I is independent of the amount of bleaching in rods and cones; the value of ΔI for rods depends upon the activity of their neighbors. The absorption of one quantum always elicits a rod signal, but its effectiveness depends upon the threshold for signals in the summation pool.In dark ...
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Adaptation of Olfactory Threshold at High Altitude
2014The aim of this study was to investigate the effects of the extreme environment of high altitude hypoxia on olfactory threshold. The study was conducted before, during, and after a scientific expedition to Mera Peak (5,800 m). The n-butanol test was used for the assessment of the magnitude of the olfactory threshold.
Ruffini, R +5 more
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EUROCON 2005 - The International Conference on "Computer as a Tool", 2005
Threshold puzzles represent an improved version of client puzzles, which have been proposed to add DoS resistance to authentication protocols. They involve the time management of solved puzzle instances, thus making the protocol resistant to strong attacks.
V. Bocan, M. Fagadar-Cosma
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Threshold puzzles represent an improved version of client puzzles, which have been proposed to add DoS resistance to authentication protocols. They involve the time management of solved puzzle instances, thus making the protocol resistant to strong attacks.
V. Bocan, M. Fagadar-Cosma
openaire +1 more source