نتایج جستجو برای: discrimination power
تعداد نتایج: 548626 فیلتر نتایج به سال:
The effects of aging on decision time were examined in a brightness discrimination experiment with young and older subjects (ages, 60-75 years). Results showed that older subjects were slightly slower than young subjects but just as accurate. Ratcliff's (1978) diffusion model was fit to the data, and it provided a good account of response times, their distributions, and response accuracy. There...
Fisher's linear discriminant analysis (FLDA) is an important dimension reduction method in statistical pattern recognition. It has been shown that FLDA is asymptotically Bayes optimal under the homoscedastic Gaussian assumption. However, this classical result has the following two major limitations: 1) it holds only for a fixed dimensionality D, and thus does not apply when D and the training s...
BACKGROUND AND OBJECTIVES The interactive approach of a journal club has been described in the medical education literature. The aim of this investigation is to present an assessment of journal club as a tool to address the question whether residents read more and critically. METHODS This study reports the performance of medical residents in anesthesiology from the Clinics Hospital - Universi...
We provide a simple base algorithm for the given task of attribute selection as well as two improvements to this algorithm. We report on the results of their implementation and provide an error analysis. We then report some observations and conclusions about the human attribute selection process by comparing the output of our algorithms and the attributes selected by humans. Finally, we add som...
MOTIVATION Transcriptional profiling using microarrays can reveal important information about cellular and tissue expression phenotypes, but these measurements are costly and time consuming. Additionally, tissue sample availability poses further constraints on the number of arrays that can be analyzed in connection with a particular disease or state of interest. It is therefore important to pro...
Slant-discrimination thresholds were measured for textures with the property that their power spectra, when log transformed, are inversely proportional to log spatial frequency: P(f) alpha f-beta. As the exponent beta changes from high values to low values, the slope of the power spectrum of the image decreases. As the parameter passes through values in the fractal range the resulting texture c...
Associative learning can occur under anesthesia and its neural correlates have begun to be elucidated. During discrimination learning under anesthesia in rats, lateral amygdala excitability increases in response to a conditioned stimulus (CS+) previously paired with electrical stimulation of the paw but not to another stimulus presented alone (CS-). Similarly, medial prefrontal cortex activity ...
This paper criticizes the view that discrimination limits the disadvantaged sex to undertaking housework and thus ensures that gains from specialization at the household level are not wasted. Our framework gives attention to causal links between labor market discrimination and the strategic behavior of women and men within families. We consider a repeated family bargaining model that links the ...
BACKGROUND AND PURPOSE Statistical models to predict the outcome of stroke patients have several uses. Their utility depends on their predictive accuracy in patients other than those on whom they were developed (ie, external validity). We sought to test the external validity of some recently described models in patients enrolled in the FOOD (Feed Or Ordinary Diet) trial: a large randomized tria...
To effectively measure the power of discrimination of terms is a crucial issue in information retrieval (IR). Term mismatch and ambiguity have long been troublesome, and the improvement of retrieval performance by increased precision through query expansion is of interest. This report focuses on a discrimination measure for use with query expansion. The discrimination measure is derived from a ...
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