Results 21 to 30 of about 1,057,367 (187)

A method of coal gangue detection based on deep learning

open access: yes矿业科学学报, 2021
In view of the requirement to separate gangue from coal in coal preparation factory and avoid complex artificial feature design process based on computer vision in the past, an end-to-end gangue detection method by deep learning based on YOLOv3 is ...
Zhao Xuejun, Li Jian
doaj   +1 more source

Bayesian estimation for Life-Time distribution parameter under Compound Loss Function with Optimal Sample Size Determination [PDF]

open access: yesالمجلة العراقية للعلوم الاحصائية, 2020
:             This research aims to find Bayes estimator under symmetric and asymmetric two loss functions, such as the squared Log error loss function and entropy loss function, as well as a loss function that combines these two functions.
Safwan Nathem Rashad, Raya Al-Rassam
doaj   +1 more source

A study of minimax shrinkage estimators dominating the James-Stein estimator under the balanced loss function

open access: yesOpen Mathematics, 2022
One of the most common challenges in multivariate statistical analysis is estimating the mean parameters. A well-known approach of estimating the mean parameters is the maximum likelihood estimator (MLE).
Benkhaled Abdelkader   +4 more
doaj   +1 more source

Imbalanced Underwater Acoustic Target Recognition with Trigonometric Loss and Attention Mechanism Convolutional Network

open access: yesRemote Sensing, 2022
A balanced dataset is generally beneficial to underwater acoustic target recognition. However, the imbalanced class distribution is always meted out in a real scene.
Yanxin Ma   +6 more
doaj   +1 more source

Limits of Risks Ratios of Shrinkage Estimators under the Balanced Loss Function [PDF]

open access: yesJournal of Siberian Federal University. Mathematics & Physics, 2021
In this paper we study the estimation of a multivariate normal mean under the balanced loss function. We present here a class of shrinkage estimators which generalizes the James-Stein estimator and we are interested to establish the asymptotic behaviour of risks ratios of these estimators to the maximum likelihood estimators (MLE).
Terbeche, Mekki   +2 more
openaire   +1 more source

Bayesian and E-Bayesian estimation based on constant-stress partially accelerated life testing for inverted Topp–Leone distribution

open access: yesOpen Physics, 2023
Accelerated or partially accelerated life tests are particularly significant in life testing experiments since they save time and cost. Partially accelerated life tests are carried out when the data from accelerated life testing cannot be extrapolated to
Al Mutairi Aned   +5 more
doaj   +1 more source

Analysis of uncertainty measure using unified hybrid censored data with applications

open access: yesJournal of Taibah University for Science, 2021
Entropy is a measure of random variable uncertainty that reflects the anticipated quantity of information. In this paper, estimation of Shannon entropy for Lomax distribution, viz unified hybrid censored data are considered.
Baria A. Helmy   +2 more
doaj   +1 more source

Vestibular function and balance performance in children with sensorineural hearing loss

open access: yesInternational Journal of Audiology, 2023
Balance difficulties are common in children with sensorineural hearing loss (SNHL). For some of these children, concomitant vestibular deficits may impact postural control. This study aimed to explore vestibular function, functional balance and postural control, and the relationship between these measures in children with SNHL.
Donella, Chisari   +3 more
openaire   +2 more sources

A gesture recognition algorithm based on improved YOLOv3

open access: yesJournal of Hebei University of Science and Technology, 2021
In order to solve the problems of low recognition accuracy and easily affected by illumination conditions in the gesture recognition, an improved YOLOv3 gesture recognition algorithm was proposed.
Bingdong SUI, Pai ZHANG, Xiaojun WANG
doaj   +1 more source

E-Bayesian Estimation of Chen Distribution Based on Type-I Censoring Scheme

open access: yesEntropy, 2020
In this paper, E-Bayesian estimation of the scale parameter, reliability and hazard rate functions of Chen distribution are considered when a sample is obtained from a type-I censoring scheme.
Ali Algarni   +3 more
doaj   +1 more source

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