نتایج جستجو برای: weighting factors

تعداد نتایج: 1095703  

Journal: :Statistics and Computing 2021

We consider the problem of assigning weights to a set samples or data records, with goal achieving representative weighting, which happens when certain sample averages are close prescribed values. frame finding as an optimization problem, in many cases is convex and can be efficiently solved. Our formulation includes special case selection fixed number samples, equal weights, i.e., selecting sm...

Journal: :IEEE transactions on image processing : a publication of the IEEE Signal Processing Society 1994
Luc Vandendorpe Laurent Cuvelier Benoît Maison

This correspondence addresses the problem of human visual weighted quantization for transform/subband coding of interlaced pictures. Merged field coding is assumed. The criterion proposed for the optimization of the quantizer is the distortion measured on the deinterlaced and decoded image. This criterion and the associated weighting factors are shown to be dependent on the motion between two s...

Journal: :Journal of applied geospatial information 2023

In general, the territory of Indonesia is prone to hydrometeorological disaster events. management, it necessary map source or level potential hazards. The Analytic Hierarchy Process (AHP) method has been used determine relative importance each criterion for mapping disasters. This literature study aims criteria and weighting in AHP approach that can be assessing review limited by analyzing pot...

2010
Patrick A. Byrne Douglas Crawford

29 30 It is not known how egocentric visual information (location of a target relative to the self) and 31 allocentric visual information (location of a target relative to external landmarks) are integrated 32 to form reach plans. Based on behavioural data from rodents and humans we hypothesized that 33 the degree of stability in visual landmarks would influence the relative weighting. Furtherm...

Journal: :AJR. American journal of roentgenology 2015
Samuel L Brady Amy E Mirro Bria M Moore Robert A Kaufman

OBJECTIVE The purpose of this study is to show how to calculate effective dose in CT using size-specific dose estimates and to correct the current method using dose-length product (DLP). MATERIALS AND METHODS Data were analyzed from 352 chest and 241 abdominopelvic CT images. Size-specific dose estimate was used as a surrogate for organ dose in the chest and abdominopelvic regions. Organ dose...

Journal: :the modares journal of electrical engineering 2011
bijan abbasi arand vahid ansari

antenna structures with low side lobe levels are normally the main goal during antenna design. in this paper, a new method for reduction of radiation pattern side lobe level in phased array antenna with uniform and non-uniform weighting is presented. in this method, by changing the array elements weight or adding several elements, such as slc technique, the pattern with low side lobe level can ...

2014
Haibing Wu Xiaodong Gu

Recently the research on supervised term weighting has attracted growing attention in the field of Traditional Text Categorization (TTC) and Sentiment Analysis (SA). Despite their impressive achievements, we show that existing methods more or less suffer from the problem of over-weighting. Overlooked by prior studies, over-weighting is a new concept proposed in this paper. To address this probl...

Journal: :Radiology 2010
Andrew J Einstein Carl D Elliston Andrew E Arai Marcus Y Chen Richard Mather Gregory D N Pearson Robert L Delapaz Edward Nickoloff Ajoy Dutta David J Brenner

PURPOSE To determine radiation doses from coronary computed tomographic (CT) angiography performed by using a 320-detector row volume scanner and evaluate how the effective dose depends on scan mode and the calculation method used. MATERIALS AND METHODS Radiation doses from coronary CT angiography performed by using a volume scanner were determined by using metal-oxide-semiconductor field-eff...

2000
Jzau-Sheng LIN

This paper describes the application of an unsupervised parallel approach called the Annealed Hopfield Neural Network (AHNN) using a modified cost function with moment and entropy preservation for magnetic resonance image (MRI) classification. In the AHNN, the neural network architecture is same as the original 2-D Hopfield net. And a new cooling schedule is embedded in order to make the modifi...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید