Volumetric segmentation of the corpus callosum: training a deep learning model on diffusion MRI

2021 ◽  
Author(s):  
Joany Rodrigues ◽  
Gustavo Pinheiro ◽  
Diedre Carmo ◽  
Letícia Rittner
Keyword(s):  
Deep Learning ◽  
Corpus Callosum ◽  
Diffusion Mri ◽  
Learning Model ◽  
Deep Learning Model ◽  
Volumetric Segmentation

scholarly journals Head CT Deep Learning Model for Early Stroke Identification Outperforms Human Experts

2021 ◽  
Author(s):  
Bernardo Canedo Bizzo ◽  
Romane Gauriau ◽  
Donnella Comeau ◽  
James Hillis ◽  
Christopher Bridge ◽  
...  
Keyword(s):  
Deep Learning ◽  
Diffusion Mri ◽  
Infarct Volume ◽  
Ground Truth ◽  
Learning Model ◽  
Head Ct ◽  
Acute Infarct ◽  
Model Versus ◽  
Volume Estimates ◽  
Deep Learning Model

Abstract Non-contrast head CT (NCCT) is extremely insensitive for early (< 3-6hrs) acute infarct identification. We developed a deep learning model that detects and delineates early acute infarcts on NCCT, using diffusion MRI as ground truth (3,566 NCCT/MRI training pairs). The model substantially outperformed 3 expert neuroradiologists on a test set of 150 CT scans (sensitivity 96% model versus 61–66% experts); infarct volume estimates strongly correlated with those of diffusion MRI (r2 > 0.98).

Improving Sentiment Analysis using Hybrid Deep Learning Model

2020 ◽  
Vol 13 (4) ◽  
pp. 627-640 ◽  
Author(s):  
Avinash Chandra Pandey ◽  
Dharmveer Singh Rajpoot
Keyword(s):  
Neural Network ◽  
Deep Learning ◽  
Sentiment Analysis ◽  
Classification Accuracy ◽  
Short Term Memory ◽  
Computational Cost ◽  
Extraction Process ◽  
Learning Model ◽  
Sentiment Classification ◽  
Deep Learning Model

Background: Sentiment analysis is a contextual mining of text which determines viewpoint of users with respect to some sentimental topics commonly present at social networking websites. Twitter is one of the social sites where people express their opinion about any topic in the form of tweets. These tweets can be examined using various sentiment classification methods to find the opinion of users. Traditional sentiment analysis methods use manually extracted features for opinion classification. The manual feature extraction process is a complicated task since it requires predefined sentiment lexicons. On the other hand, deep learning methods automatically extract relevant features from data hence; they provide better performance and richer representation competency than the traditional methods. Objective: The main aim of this paper is to enhance the sentiment classification accuracy and to reduce the computational cost. Method: To achieve the objective, a hybrid deep learning model, based on convolution neural network and bi-directional long-short term memory neural network has been introduced. Results: The proposed sentiment classification method achieves the highest accuracy for the most of the datasets. Further, from the statistical analysis efficacy of the proposed method has been validated. Conclusion: Sentiment classification accuracy can be improved by creating veracious hybrid models. Moreover, performance can also be enhanced by tuning the hyper parameters of deep leaning models.

Very short-term forecasting of wind power generation using hybrid deep learning model

2021 ◽  
Vol 296 ◽  
pp. 126564
Author(s):  
Md Alamgir Hossain ◽  
Ripon K. Chakrabortty ◽  
Sondoss Elsawah ◽  
Michael J. Ryan
Keyword(s):  
Power Generation ◽  
Deep Learning ◽  
Wind Power ◽  
Learning Model ◽  
Wind Power Generation ◽  
Short Term ◽  
Short Term Forecasting ◽  
Deep Learning Model
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