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Anomaly Detection

#artificialintelligence

An Anomaly is by definition something that is outside the norm or what is expected. For data this can mean rare individual outliers or distinct clusters. Anomaly detection is an important capability with broad applicability in many domains such as medical diagnostics or in detection of intrusions, fraud, or false information. All three categories of model training are used for anomalous data; supervised, semi-supervised, and unsupervised. Typically the first go-to methods are statistical and classical machine learning techniques.


GauGAN Turns Doodles into Stunning, Realistic Landscapes NVIDIA Blog

#artificialintelligence

A novice painter might set brush to canvas aiming to create a stunning sunset landscape -- craggy, snow-covered peaks reflected in a glassy lake -- only to end up with something that looks more like a multi-colored inkblot. But a deep learning model developed by NVIDIA Research can do just the opposite: it turns rough doodles into photorealistic masterpieces with breathtaking ease. The tool leverages generative adversarial networks, or GANs, to convert segmentation maps into lifelike images. The interactive app using the model, in a lighthearted nod to the post-Impressionist painter, has been christened GauGAN. GauGAN could offer a powerful tool for creating virtual worlds to everyone from architects and urban planners to landscape designers and game developers.


Everything you need to know about narrow AI

#artificialintelligence

In 1956, a group of scientists led by John McCarthy, a young assistant-professor of mathematics, gathered at the Dartmouth College, NH, for an ambitious six-week project: Creating computers that could "use language, form abstractions, and concepts, solve kinds of problems now reserved for humans, and improve themselves." The project kickstarted the field that has become known as artificial intelligence (AI). At the time, the scientists thought that a "2-month, 10-man study of artificial intelligence" would solve the biggest part of the AI equation. "We think that a significant advance can be made in one or more of these problems if a carefully selected group of scientists work on it together for a summer," the first AI proposal read. We still don't have thinking machines that can think and solve problems like a human child, let alone an adult.


r/MachineLearning - [P] Comparison of consumer GPUs to workstation GPUs for deep learning. Is there any good reference already out there?

#artificialintelligence

I was wondering if there is any good comparisons between top GPUs used for gaming like the Nividia 20x series and the workstation GPUs specialized for deep learning, like the Tesla V100, K80, etc. Obviously the workstations will be far faster, but I was looking for a comparison. If I'm already going to purchase a high end GPU for gaming, I'd like to see just how much slower it would be to train a neural net than paying for service on the cloud.


How to Use Optical Character Recognition for Security System Development

#artificialintelligence

Applying machine learning techniques to security solutions is one of the current AI trends. This article will cover the approach to developing OCR-based software using deep learning algorithms. This software can be used to analyze and process identification such as a US driver's license as part of a security system for verifying identity. OCR (Optical Character Recognition) technology is already used by machine learning companies for business processes automation and optimization, with use cases ranging from Dropbox using it to parse through pictures to Google Street view identifying different street signs to searching through text messages and translating text in real time. In this particular case, OCR can be used as part of an automated biometric verification system.


Flexible and Context-Specific AI Explainability: A Multidisciplinary Approach

#artificialintelligence

Abstract: The recent enthusiasm for artificial intelligence (AI) is due principally to advances in deep learning. Deep learning methods are remarkably accurate, but also opaque, which limits their potential use in safety-critical applications. To achieve trust and accountability, designers and operators of machine learning algorithms must be able to explain the inner workings, the results and the causes of failures of algorithms to users, regulators, and citizens. The originality of this paper is to combine technical, legal and economic aspects of explainability to develop a framework for defining the "right" level of explain-ability in a given context. We propose three logical steps: First, define the main contextual factors, such as who the audience of the explanation is, the operational context, the level of harm that the system could cause, and the legal/regulatory framework.


What is Deep Learning and How Does it Work?

#artificialintelligence

Sit back, relax, and get comfortable with cool concepts like artificial neural networks, gradient descent, backpropagation, and more. The inspiration for deep learning is the way that the human brain filters information. At a very basic level, Deep Learning is a Machine Learning technique. It teaches a computer to filter inputs through layers to learn how to predict and classify information. Observations can be in the form of images, text, or sound. The inspiration for Deep Learning is the way that the human brain filters information. Its purpose is to mimic how the human brain works to create some real magic.


Learn PyTorch in 10 minutes

#artificialintelligence

PyTorch is an open source Machine Learning library based on the Torch library, used for applications such as computer vision and natural language processing. PyTorch is an open source Machine Learning library based on the Torch library, used for applications such as computer vision and natural language processing. This tutorial introduces the fundamental concepts of PyTorch through self-contained examples. We will use a fully-connected ReLU network as our running example. The network will have a single hidden layer, and will be trained with gradient descent to fit random data by minimizing the Euclidean distance between the network output and the true output.


Sequential hypothesis testing in machine learning driven crude oil jump detection

arXiv.org Machine Learning

In this paper we present a sequential hypothesis test for the detection of general jump size distrubution. Infinitesimal generators for the corresponding log-likelihood ratios are presented and analyzed. Bounds for infinitesimal generators in terms of super-solutions and sub-solutions are computed. This is shown to be implementable in relation to various classification problems for a crude oil price data set. Machine and deep learning algorithms are implemented to extract a specific deterministic component from the crude oil data set, and the deterministic component is implemented to improve the Barndorff-Nielsen and Shephard model, a commonly used stochastic model for derivative and commodity market analysis.


Binarized Graph Neural Network

arXiv.org Machine Learning

Recently, there have been some breakthroughs in graph analysis by applying the graph neural networks (GNNs) following a neighborhood aggregation scheme, which demonstrate outstanding performance in many tasks. However, we observe that the parameters of the network and the embedding of nodes are represented in real-valued matrices in existing GNN-based graph embedding approaches which may limit the efficiency and scalability of these models. It is well-known that binary vector is usually much more space and time efficient than the real-valued vector. This motivates us to develop a binarized graph neural network to learn the binary representations of the nodes with binary network parameters following the GNN-based paradigm. Our proposed method can be seamlessly integrated into the existing GNN-based embedding approaches to binarize the model parameters and learn the compact embedding. Extensive experiments indicate that the proposed binarized graph neural network, namely BGN, is orders of magnitude more efficient in terms of both time and space while matching the state-of-the-art performance.