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Fault Diagnosis Method of Plunger Pump Based on Meta-Learning and Improved Multi-Channel Convolutional Neural Network Under Small Sample Condition [PDF]

open access: yesSensors
A fault diagnosis method based on meta-learning and an improved multi-channel convolutional neural network (MAML-MCCNN-ISENet) was proposed to solve the problems of insufficient feature extraction and low fault type identification accuracy of vibration ...
Xiwang Yang   +4 more
doaj   +2 more sources

Fine-Tuned Deep Convolutional Networks for the Detection of Femoral Neck Fractures on Pelvic Radiographs: A Multicenter Dataset Validation

open access: yesIEEE Access, 2021
In this study, we aim to provide a deep convolutional network based femoral neck fracture detection system on radiographs for emergency patients. We retrospectively collected 1,491 frontal pelvic radiographs from three institutions and assigned them to ...
Lin Mu   +9 more
doaj   +1 more source

Auto‐calibration Kalman filters for non‐linear systems with direct feedthrough

open access: yesIET Control Theory & Applications, 2021
The problem of state estimation for non‐linear systems with unknown inputs is discussed. The objective is to construct a non‐linear filter where the unknown input affects both the state equation and measurement equation. An auto‐calibration Kalman filter
Yi Cui, Zhihua Wang
doaj   +1 more source

A fault diagnosis method for roller based on small sample sound signals

open access: yesGong-kuang zidonghua, 2023
Fault diagnosis methods based on deep learning have high requirements for the quality of the dataset, requiring a large amount of data for good model training to achieve accurate fault diagnosis.
HAO Hongtao, QIU Yuanyuan, DING Wenjie
doaj   +1 more source

Reliability Assessment for a Spacecraft Landing Buffer Mechanism Based on Small Sample Data

open access: yesMachines, 2023
The landing buffer mechanism (LBM) is a crucial component of aerospace landing explorations, determining the success of the entire mission. Reliability demonstration tests (RDTs) are required to ensure the LBM’s performance meets the design index ...
Ziang Li, Huimin Fu, Qiong Wu
doaj   +1 more source

Wind Turbine Blade Defect Detection Based on Acoustic Features and Small Sample Size

open access: yesMachines, 2022
Wind power has become an important source of electricity for both production and domestic use. However, because wind turbines often operate in harsh environments, they are prone to cracks, blisters, and corrosion of the blade surface.
Yuefan Zhu   +4 more
doaj   +1 more source

Big Data, Small Sample [PDF]

open access: yesThe International Journal of Biostatistics, 2017
AbstractMultiple comparisons and small sample size, common characteristics of many types of “Big Data” including those that are produced by genomic studies, present specific challenges that affect reliability of inference. Use of multiple testing procedures necessitates calculation of very small tail probabilities of a test statistic distribution ...
Inna, Gerlovina   +2 more
openaire   +2 more sources

How Vietnamese Export Firms Faced Financial Distress during COVID-19? A Bayesian Small Sample Analysis

open access: yesEconomies, 2023
A crucial role belongs to export firms in the export-led growth model of Vietnam. The COVID-19 disease has posed a serious challenge to the Vietnamese economy, having negatively impacted its influential export sector.
Thanh Dan Bui, Nguyen Ngoc Thach
doaj   +1 more source

IBSA_Net: A Network for Tomato Leaf Disease Identification Based on Transfer Learning with Small Samples

open access: yesApplied Sciences, 2023
Tomatoes are a crop of significant economic importance, and disease during growth poses a substantial threat to yield and quality. In this paper, we propose IBSA_Net, a tomato leaf disease recognition network that employs transfer learning and small ...
Ruofan Zhang   +4 more
doaj   +1 more source

A Rolling Bearing Fault Diagnosis Based on Conditional Depth Convolution Countermeasure Generation Networks under Small Samples

open access: yesSensors, 2022
Aiming at the problems of low fault diagnosis accuracy caused by insufficient samples and unbalanced data sample distribution in bearing fault diagnosis, this paper proposes a fault diagnosis method for rolling bearings referencing conditional deep ...
Cheng Peng, Shuting Zhang, Changyun Li
doaj   +1 more source

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