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Machine Learning


@Radiology_AI

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To develop a convolutional neural network (CNN)–based deformable lung registration algorithm to reduce computation time and assess its potential for lobar air trapping quantification. In this retrospective study, a CNN algorithm was developed to perform deformable registration of lung CT (LungReg) using data on 9118 patients from the COPDGene Study (data collected between 2007 and 2012). Loss function constraints included cross-correlation, displacement field regularization, lobar segmentation overlap, and the Jacobian determinant. LungReg was compared with a standard diffeomorphic registration (SyN) for lobar Dice overlap, percentage voxels with nonpositive Jacobian determinants, and inference runtime using paired t tests. Landmark colocalization error (LCE) across 10 patients was compared using a random effects model.


Optimizing Neural Networks

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The goal of training an artificial neural network is to achieve the lowest generalized error in the least amount of time. In this article I'll outline a brief description of some common methods of optimizing training. Feature scaling, is the process of scaling the input features such that all features occupy the same range of values. This ensures that the gradient of the cost function is not exaggerated in any particular dimension, which reduces oscillation during gradient descent. Oscillation during gradient descent means the training is not maximally efficient, as it's not taking the shortest path to the minimum of the cost function.


9 Distance Measures in Data Science

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Many algorithms, whether supervised or unsupervised, make use of distance measures. These measures, such as euclidean distance or cosine similarity, can often be found in algorithms such as k-NN, UMAP, HDBSCAN, etc. Understanding the field of distance measures is more important than you might realize. Take k-NN for example, a technique often used for supervised learning. As a default, it often uses euclidean distance. However, what if your data is highly dimensional?


Artificial Intelligence Can Help Leaders Drive Global Economy Forward In 2022

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Significant hurdles leaders face this year include managing talent, formulating strategies, operational plans, and organizing employee tasks in ways that ensure everyone accesses growth opportunities. These challenges emphasize the importance of good strategy, and are essential for organizational survival. Vijay Pereira, Professor and head of department of people and organizations, at NEOMA Business School in France, believes artificial intelligence (AI) can help leaders undertake these challenges. For example, his recent work concludes that evolutionary computation and data mining can explore large databases or social media to locate potential talented individuals for recruitment purposes. In addition, machine learning helps reanalyze and recognize patterns from data collected from existing decision support systems to help organizations improve their strategic planning processes.


Face Anonymization Pipeline in Pytorch

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Protecting data privacy is critical to preserving customer trust and is also gaining increasing attention from policy makers. Staying ahead of these expectations requires continual improvements to AI toolchains. Anonymizing image data is particularly challenging without badly degrading the quality of the image samples. We developed the capability to anonymize images while preserving the image distribution, giving us an excellent way to maintain the anonymity of the persons in the images while still performing data augmentation tasks. Our approach is based on the paper, "DeepPrivacy: A Generative Adversarial Network for Face Anonymization," published in 2019 at the International Symposium on Visual Computing.


How Implementing Machine Learning Solutions Helps Your Business

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Machine learning for business is the next great wave crashing in to create smarter and more efficient ways to handle business decisions and operations, as well as customer interactions. As with any business, the goal is to gather information from how the business is currently run. Then, an educated prediction is made about the data collected so that management and ownership can guide the company in a more successful direction. Humans only have so much brainpower, and they tend to have disadvantages such as bias, poor pattern recognition, or even fatigue playing a role in their decision-making. With machine learning for business, none of these issues would hold back decisions.


pytorch/CONTRIBUTING.md at master · pytorch/pytorch

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Thank you for your interest in contributing to PyTorch! Once you implement and test your feature or bug-fix, please submit a Pull Request to https://github.com/pytorch/pytorch. This document covers some of the more technical aspects of contributing to PyTorch. For more non-technical guidance about how to contribute to PyTorch, see the Contributing Guide. If you want to have no-op incremental rebuilds (which are fast), see the section below titled "Make no-op build fast." This mode will symlink the Python files from the current local source tree into the Python install. Hence, if you modify a Python file, you do not need to reinstall PyTorch again and again. This is especially useful if you are only changing Python files. You do not need to repeatedly install after modifying Python files (.py).


TheViewPoint Releases Intelpoint Machine Learning Algorithm for Bidding Optimisation - ExchangeWire.com

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"We always aim to provide the highest quality CTV-first technology, and positively contribute to the wider CTV industry. In 2021, our team of highly qualified data scientists were examining patterns in demand-side platforms' (DSPs) bid responses to publishers' bid requests coming through our platform. Collected datasets allowed us to identify bidding patterns and model an algorithm that was further augmented by machine learning technology. We believe TVP Intelpoint will make a huge difference for both sides of the CTV advertising pipeline," says Yaroslav Vyrva, head of product at TheViewPoint.


How to Improve Accuracy of Random Forest ? Tune Classifier In 7 Steps

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Random Forest is the best algorithm after the decision trees. You can say its collection of the independent decision trees. Each decision tree has some predicted score and value and the best score is the average of all the scores of the trees. But wait do you know you can improve the accuracy of the score through tuning the parameters of the Random Forest. Yes, rather than completely depend upon adding new data to improve accuracy, you can tune the hyperparameters to improve the accuracy.


New machine learning and data science option offers ECE undergrads in-demand skills - College of Engineering - University of Wisconsin-Madison

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In the last couple of decades, technology has become very efficient at collecting information from the physical world, including wearable medical sensors, radar systems integrated into automobiles and satellites monitoring earth's climate--as well as from humans by monitoring the decisions they make. But that massive trove of data is mostly useless on its own; sophisticated computer algorithms are needed to find patterns, extract meaning and make predictions from the data. That's why the University of Wisconsin-Madison Department of Electrical and Computer Engineering launched the machine learning and data science option for both undergraduate electrical engineering and computer engineering majors. The option requires 18 elective credits in the 120-hour bachelor's degree consisting of courses focusing on machine learning and data science in engineering. Courses in the option cover coding for data manipulation, analysis, and visualization, and machine learning topics from applied linear algebra and probability through artificial neural networks and deep learning. When students graduate, the option is noted on their transcript, giving them a valuable credential in future employment searches.