Deep Learning
Curiosity-driven Exploration for Mapless Navigation with Deep Reinforcement Learning
Zhelo, Oleksii, Zhang, Jingwei, Tai, Lei, Liu, Ming, Burgard, Wolfram
Deep Reinforcement Learning (DRL), deploying deep neural networks as function approximators for highdimensional RL tasks, achieves state of the art performance in various fields of research [1]. DRL algorithms have been studied under the context of learning navigation policies for mobile robots. Traditional navigation solutions in robotics generally require a system of procedures, such as Simultaneous Localization and Mapping (SLAM) [2], localization and path planning in a given map, etc. With the powerful representation learning capabilities of deep networks, DRL methods bring about the possibility of learning control policies directly from raw sensory inputs, bypassing all the intermediate steps. Eliminating the requirement for localization, mapping, or path planning procedures, several DRL works have been presented that learn successful navigation policies directly from raw sensor inputs: target-driven navigation [3], successor feature RL for transferring navigation policies [4], and using auxiliary tasks to boost DRL training [5]. Many followup works have also been proposed, such as embedding SLAMlike structures into DRL networks [6], or utilizing DRL for multi-robot collision avoidance [7]. In this paper, we focus specifically on mapless navigation, where the agent is expected to navigate to a designated goal location without the knowledge of the map of its current environment.
Heterogeneity Analysis and Diagnosis of Complex Diseases Based on Deep Learning Method
Since complex diseases such as cancer, diabetes and so on pose a very big threat to human health, they have been extensively studied in the past decades1. However, the underlying pathogenesis of complex diseases is still not clearly known. With the rapid development of genomics technologies, the big data of variations on DNA level such as SNP and CNV (copy number variation) allow comprehensive characterization of complex diseases and provide potential biomarkers to predict the status of complex diseases. Due to the'missing heritability' and lack of reproducibility, the exploration of relationships between SNPs and complex diseases have been transferred from single variation to biomarkers interactions which are defined as epistasis2. First, as the number of variants increases, the combination space expands exponentially, resulting in the'curse of dimensionality' problem. Furthermore, when the higher order of epistasis is considered, the situation becomes even worse.
Adapting Deep Learning to Medicine with Behold.ai Amazon Web Services
In this post, we share our backstory and discuss how we are reimagining how radiologists diagnose patients, which allows healthcare providers to streamline operations. We also explain how we use Amazon Web Services (AWS) to power our services. His mother discovered a lump on her breast in 2006 and got a mammogram. The scan was read as negative for breast cancer, though that wasn't the case. Fortunately, his family sought a second opinion, and treatment for his mother began immediately.
Deep learning - Deep Learning for Precision Health
Magnetoencephalography (MEG) is a functional neuroimaging modality that records the magnetic fields induced by neuronal activity. It provides better temporal resolution than fMRI and is less affected by noise from intervening tissues than EEG. We propose a data driven, fully automated approach that extracts statistically independent MEG components and a convolutional neural network to discriminate the artifactual components from neuronal ones, without tedious manual labeling. Our custom, 10-layer Convolutional Neural Network (CNN) directly labels eye-blink artifacts. The spatial features the CNN learns are visualized using attention mapping, to reveal what it has learned and bolster confidence in the method's ability to generalize to unseen data.
Deep Learning, Machine Learning, Healthcare
Machine Learning has been used in Healthcare for some time now. Today, Deep Learning can be used to help Physicians diagnose injury and ailments. There are many different types of technology working together to enable deep learning. This includes imaging sytems, scanners, iot devices, big data storage and much more. Its difficult to understand all the pieces.
The revolution won't wait: AI enthusiasm rises, but adoption lags
The sheer amount of computing power required for AI processes has become another bottleneck to adoption. In recent years, cloud computing and parallel processing provided short term solutions, but as data volume grows and as deep learning drives automated creation of increasingly complex algorithms, we're due for another revolution in AI infrastructure. Today, companies are building innovative hardware--neuromorphic chips and tensor processing units (TPUs), for example--in order to improve computing power for scalable AI.
Can't-Miss Keynotes at Deep Learning World – June 3-7 in Vegas
Don't miss the opportunity to witness keynote sessions by industry heavyweights at the upcoming inaugural Deep Learning World conference in Las Vegas. Deep Learning World is the premier conference covering the commercial deployment of deep learning. The event's mission is to foster breakthroughs in the value-driven operationalization of established deep learning methods. Check out these Can't-Miss Keynotes this June in Las Vegas: Applied Deep Learning: Self-Driving Cars and Fake News Detection Michael Tamir, Uber Applied deep learning has fast become a standard tool for many industry machine learning applications. New advances in neural network techniques have opened the doors to solving problems at scale that were out of reach until recently.
r/MachineLearning - [D] PyTorch Global GPU Flag
You are saying that dataloaders give CPU tensors by default but that is usually preferred. For instance, for images, loader backends (like PIL) are implemented on CPU so the data is first loaded in RAM and then passed to GPU. And when you want to do some pre-processing operations, it's actually preferable to make them on CPU since it won't slow down your model because it's made in parallel. Moreover most of these operations, like resizing, are well optimized for CPUs (using Pillow SIMD for example). I think, like others said, that having control over when and where data is moved is a nice way to make sure that you are doing exactly what you want.
Artificial Neural Nets Grow Brainlike Cells to Find Their Way
Having the sense to take a shortcut, the most direct route from point A to point B, doesn't sound like a very impressive test of intelligence. Yet according to a new report appearing last week in Nature, in which researchers describe the performance of their new navigational artificial intelligence, the system's ability to explore complex simulated environments and find the shortest route to a goal put it in a class previously reserved for humans and other living things. Original story reprinted with permission from Quanta Magazine, an editorially independent publication of the Simons Foundation whose mission is to enhance public understanding of science by covering research developments and trends in mathematics and the physical and life sciences. The surprising key to the system's performance was that while learning how to navigate, the neural net spontaneously developed the equivalent of "grid cells," sets of brain cells that enable at least some mammals to track their location in space. For neuroscientists, the new work seems to offer important clues about how grid cells in living brains make us better navigators. It also shows how neural nets could contribute greatly to future neuroscience studies: Neil Burgess, a cognitive neuroscientist at University College London who was not involved with the study, suggested that the systems should "provide fertile ground for understanding how and why the human brain works as it does."