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New Machine Learning Theory Raises Questions About the Very Nature of Science

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A novel computer algorithm, or set of rules, that accurately predicts the orbits of planets in the solar system could be adapted to better predict and control the behavior of the plasma that fuels fusion facilities designed to harvest on Earth the fusion energy that powers the sun and stars. The algorithm, devised by a scientist at the U.S. Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL), applies machine learning, the form of artificial intelligence (AI) that learns from experience, to develop the predictions. "Usually in physics, you make observations, create a theory based on those observations, and then use that theory to predict new observations," said PPPL physicist Hong Qin, author of a paper detailing the concept in Scientific Reports. "What I'm doing is replacing this process with a type of black box that can produce accurate predictions without using a traditional theory or law." Qin (pronounced Chin) created a computer program into which he fed data from past observations of the orbits of Mercury, Venus, Earth, Mars, Jupiter, and the dwarf planet Ceres.


Teaching Home Robots

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At TRI, our goal is to make breakthrough capabilities in Artificial Intelligence (AI). Despite recent advancements in AI, the large amount of data collection needed to deploy systems in unstructured environments continues to be a burden. Data collection in computer vision can be both quite costly and time-consuming, largely due to the process of annotating. Annotating data is typically done by a team of labelers, who are provided a long list of rules for how to handle different scenarios and what data to collect. For complex systems like a home robot or a self-driving car, these rules must be constantly refined, which creates an expensive feedback loop.


Top 10 predictions of how AI is going to improve cybersecurity In 2021

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There is no denying that Artificial Intelligence (AI) is the future of cybersecurity. In other words, the future of cybersecurity lies in the hands of Artificial Intelligence (AI). Companies or medium-sized corporations can counter various cyber threats using the advanced concepts of AI. If you want to know about different AI predictions that will positively influence cybersecurity in 2021 and in the future, read this post in detail. According to a recent research conducted by Trend Micro, Artificial Intelligence (AI) will replace the need for human beings by the end of 2030.


The Evolution and Future of AI in the Stock Market

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A dedicated writer and digital evangelist. Are you aware of how the buying and selling of stocks were carried out when there was no internet or computers? Back then, stock exchanges had active trading floors filled with brokers and traders. To make a trade or a purchase, they had to shout or use hand signals to alert others about their buy or sell orders. It looked a whole lot like an auction at a fish market today. But then came computers and the internet to change the game completely.


Dealing with Overconfidence in Neural Networks: Bayesian Approach

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I trained a classifier on images of animals and gave it an image of myself, it's 98% confident I'm a dog. This is an exploration of a possible Bayesian fix. I trained a multi-class classifier on images of cats, dogs and wild animals and passed an image of myself, it's 98% confident I'm a dog. The problem isn't that I passed an inappropriate image because models in the real world are passed all sorts of garbage. It's that the model is overconfident about an image far away from the training data.


Facebook develops A.I. to predict likelihood of worsening Covid symptoms

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Artificial intelligence researchers at Facebook claim they have developed software that can predict the likelihood of a Covid patient deteriorating or needing oxygen based on their chest X-rays. Facebook, which worked with academics at NYU Langone Health's predictive analytics unit and department of radiology on the research, says that the software could help doctors avoid sending at-risk patients home too early, while also helping hospitals plan for oxygen demand. The 10 researchers involved in the study -- five from Facebook AI Research and five from the NYU School of Medicine -- said they have developed three machine-learning "models" in total, that are all slightly different. One tries to predict patient deterioration based on a single chest X-ray, another does the same with a sequence of X-rays, and a third uses a single X-ray to predict how much supplemental oxygen (if any) a patient might need. "Our model using sequential chest X-rays can predict up to four days (96 hours) in advance if a patient may need more intensive care solutions, generally outperforming predictions by human experts," the authors said in a blog post published Friday.


How You Can Expedite Your Venture With machine learning - Dataconomy

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Machine learning (ML) is a definite branch of artificial intelligence (AI) that brings together significant insights to solve complex and data-rich business problems by means of algorithms. ML understands the past data that is usually in a raw form to envisage the future outcome. It is gaining more and more popularity in the IT space, and every organization is seeking to grab the advantages of ML advancements. According to Fortune Business Insights, the expected value of the global machine learning market will be $117.19 billion by 2027 at a CAGR of 39.2% during the forecast period. Easy data availability, growing data volumes, faster computational processing, and economical data storage are driving the growth of machine learning. With machine learning tools, organizations can figure out gainful opportunities as well as possible risks more promptly.


Logistic Regression for Binary Classification

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In previous articles, I talked about deep learning and the functions used to predict results. In this article, we will use logistic regression to perform binary classification. Binary classification is named this way because it classifies the data into two results. Simply put, the result will be "yes" (1) or "no" (0). To determine whether the result is "yes" or "no", we will use a probability function: This probability function will give us a number from 0 to 1 indicating how likely this observation will belong to the classification that we have currently determined to be "yes".


How to Update Neural Network Models With More Data

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Deep learning neural network models used for predictive modeling may need to be updated. This may be because the data has changed since the model was developed and deployed, or it may be the case that additional labeled data has been made available since the model was developed and it is expected that the additional data will improve the performance of the model. It is important to experiment and evaluate with a range of different approaches when updating neural network models for new data, especially if model updating will be automated, such as on a periodic schedule. There are many ways to update neural network models, although the two main approaches involve either using the existing model as a starting point and retraining it, or leaving the existing model unchanged and combining the predictions from the existing model with a new model. In this tutorial, you will discover how to update deep learning neural network models in response to new data.


[D] KNN Performance decrease when new features were introduced

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It's still quite useful, but it does not do any kind of feature selection nor does it consider any kind of feature importance when making predictions. All it does to make predictions is to calculate the distance in feature space between the new observation you wish to make a prediction for and all the other observations it has been trained on, and find the k closest old ones to the new one, then take some aggregate of the target variable of the k closest observations (usually mean for regression and mode for classification). If you add several completely random columns to your data, kNN will use them in calculating the distance to the exact same extent as the meaningful columns. This is opposed to smarter algorithms like linear models that can figure out to ignore features that contain no predictive value. If your model is getting worse when you add new features, it doesn't even mean they contain no value.