Mountain summit detection with Deep Learning: evaluation and comparison with heuristic methods

2019 ◽  
Vol 12 (2) ◽  
pp. 225-246
Author(s):  
Rocio Nahime Torres ◽  
Piero Fraternali ◽  
Federico Milani ◽  
Darian Frajberg
Diagnostics ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1893
Author(s):  
Chueh-Hung Wu ◽  
Wei-Ting Syu ◽  
Meng-Ting Lin ◽  
Cheng-Liang Yeh ◽  
Mathieu Boudier-Revéret ◽  
...  

There is an emerging trend to employ dynamic sonography in the diagnosis of entrapment neuropathy, which exhibits aberrant spatiotemporal characteristics of the entrapped nerve when adjacent tissues move. However, the manual tracking of the entrapped nerve in consecutive images demands tons of human labors and impedes its popularity clinically. Here we evaluated the performance of automated median nerve segmentation in dynamic sonography using a variety of deep learning models pretrained with ImageNet, including DeepLabV3+, U-Net, FPN, and Mask-R-CNN. Dynamic ultrasound images of the median nerve at across wrist level were acquired from 52 subjects diagnosed as carpal tunnel syndrome when they moved their fingers. The videos of 16 subjects exhibiting diverse appearance and that of the remaining 36 subjects were used for model test and training, respectively. The centroid, circularity, perimeter, and cross section area of the median nerve in individual frame were automatically determined from the inferred nerve. The model performance was evaluated by the score of intersection over union (IoU) between the annotated and model-predicted data. We found that both DeepLabV3+ and Mask R-CNN predicted median nerve the best with averaged IOU scores close to 0.83, which indicates the feasibility of automated median nerve segmentation in dynamic sonography using deep learning.


2020 ◽  
Vol 2 (5) ◽  
pp. e190116
Author(s):  
Tatiane Cantarelli Rodrigues ◽  
Cem M. Deniz ◽  
Erin F. Alaia ◽  
Natalia Gorelik ◽  
James S. Babb ◽  
...  

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Wenlei Shi ◽  
Lei Xu ◽  
Dongli Peng

The competition among enterprises is becoming increasingly fierce. The research on the financial management evaluation model is helpful for enterprises to find possible risks as soon as possible. This paper constructs the financial management evaluation model based on the deep belief network and applies the analytic hierarchy process to determine the weight of financial management evaluation indicators, which is compared with other classical deep learning evaluation methods, such as KNN, SVM-RBF, and SVM linear. It has achieved an accuracy of more than 81%, showing a satisfactory prediction effect, which is of great significance to formulate corresponding countermeasures, strengthen financial management, improve the capital market system, and promote high-quality economic development. In addition, aiming at the problem of abnormal financial data, this paper uses the new sample dataset obtained by principal component analysis for convolution neural network model learning, which enhances the prediction accuracy of the model and fully shows that deep learning is feasible in the research of financial management prediction, and there is still a lot of space to explore.


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