نتایج جستجو برای: five statistical indices including model efficiency ef

تعداد نتایج: 3749850  

Journal: :Chest 1983
K G Lehmann A D Johnson A L Goldberger

Echocardiographic mitral valve E point-septal separation (EPSS) has been found to be a useful hemodynamic index. Prior studies have shown a high negative correlation between EPSS and left ventricular ejection fraction (EF) in selected patients, but the utility of this index with valvular heart disease has not been examined in detail. Cardiac catheterization and M-mode echocardiographic data wer...

2017
Elisabeth Becker Urs Schmidhalter

Active and passive sensors are available for ground-based, high-throughput phenotyping in the field. However, these sensor systems have seldom been compared with respect to their determination of plant water status and water use efficiency related parameters under drought conditions. In this study, five passive and active reflectance sensors, including a hyperspectral passive sensor, an active ...

2009
Altaf Hossain Faisal Zaman M. Nasser M. Mufakhkharul Islam

This article applied GARCH model instead AR or ARMA model to compare with the standard BP and SVM in forecasting of the four international including two Asian stock markets indices.These models were evaluated on five performance metrics or criteria. Our experimental results showed the superiority of SVM and GARCH models, compared to the standard BP in forecasting of the four international stock...

Journal: :Revista Facultad Nacional de Agronomía 2021

This study presents a comparison of the usual statistical methods used for crop model assessment. A case was conducted using data set from observations total dry weight in diploid potato crop, and six simulated sets derived observationsaimed to predict measured data. Statistical indices such as coefficient determination, root mean squared error, relative index agreement, modified revised modeli...

برافراشته‌پور, منصور , روشنائی, قدرت‌اله , شعبانلو, امیر , صید محمدی, عبدالمطلب محمدی, عسگری, قربان , مهر علی‌پور, جمال ,

Background and purpose: Nitrate contamination in aqueous solution has become an increasingly serious environmental problem. Hence, in this study removal of nitrate in aqueous solution was reviewed using electrocoagulation (EC) and electro-fenton (EF) processes for Fe electrodes. Materials and methods: In the present study, an EC and EF reactor in a lab scale to an approximate volume of 1 liter...

Journal: :JCP 2014
Hanwu Luo Jiangjun Ruan Fang Li

To promote the development of electric vehicles (EVs), many charging stations have been built. The construction of charging stations costs a lot, hence it’s necessary to evaluate their energy efficiency due to their main aims of energy conservation. In this paper, a fuzzy model based on the fuzzy comprehensive evaluation (FCE) and analytic hierarchy process (AHP) is presented to evaluate the en...

2014
Hendrik Drachsler Slavi Stoyanov Mathieu d'Aquin Eelco Herder Marieke Guy Stefan Dietze

This paper presents a study describing the development of an Evaluation Framework (EF) for data competitions in TEL. The study applies the Group Concept Method (GCM) to empirically depict criteria and their indicators for evaluating software applications in TEL. A statistical analysis including multidimensional scaling and hierarchical clustering on the GCM data identified the following six eva...

Journal: :Water 2023

Side orifices are commonly installed in the side of a main channel to spill or divert some flow from source lateral channels. The aim present study is accurate estimation discharge coefficient for through triangular (Δ-shaped) by applying three data-driven models including support vector machine (SVM), least squares (LSSVM) and improved gravity search algorithm (LSSVM-GSA). was estimated utiliz...

2013
Fen Xu Yan Han Mark A. Sabbagh Tengfei Wang Xuezhu Ren Chunhua Li

Although it has been argued that the structure of executive function (EF) may change developmentally, there is little empirical research to examine this view in middle childhood and adolescence. The main objective of this study was to examine developmental changes in the component structure of EF in a large sample (N = 457) of 7-15 year olds. Participants completed batteries of tasks that measu...

2005
R Henderson N Keiding

Doctors’ survival predictions for terminally ill patients have been shown to be inaccurate and there has been an argument for less guesswork and more use of carefully constructed statistical indices. As statisticians, the authors are less confident in the predictive value of statistical models and indices for individual survival times. This paper discusses and illustrates a variety of measures ...

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