Deep Learning
[D] Pre-built desktop for Deep Learning • r/MachineLearning
It all depends on your skills as a developer. If you do know how to work with many threads on many cores, I'd go for a cheap xeon/amd server with 2 or 4 cpu sockets to get up to 64 cores, a min of 1 gigabyte of ram per core, A BOOTABLE RAM DISK ON PCI-EXPRESS WITH AUTOMATIC BACKUP ( SSDs are ridiculous and overrated, they burn out so easily and they're not worth the risk for long-term storage purposes) and a fast HD (10k rpm minimum) as storage. For the GPU, honestly, unless you plan on working with CUDA/ opencl, anything is fine because you'd rarely compute on it. But if you will develop GPU-"powered" neural networks and if wattage isn't of a concern for you, given a proper thermal dissipation, there are many AMDs that can pack a punch for little money both in single and double precision. But if you don't know how to take advantage of multithreading and if frameworks are what you have in mind, whatever you buy, as long as it is fast, "it's gonna be fine".
Diving into Deep Convolutional Semantic Segmentation Networks and Deeplab_V3
Deep Convolutional Neural Networks (DCNNs) have achieved remarkable success in various Computer Vision applications. Like others, the task of semantic segmentation is not an exception to this trend. This piece provides an introduction to Semantic Segmentation with a hands-on TensorFlow implementation. We'll go over one of the most relevant papers on Semantic Segmentation of general objects -- Deeplab_v3. Regular image classification DCNNs have similar structure. These models take images as input and output a single value representing the category of that image. Usually, classification DCNNs have four main operations. Note that in this setup, we categorize an image as a whole.
China launches deep learning lab for AI dominance
China has approved a plan to create a next-generation national laboratory for deep learning. The lab is expected to help China close the gap with Western counterparts in the field of competitive artificial intelligence applications. The National Development and Reform Commission (NDRC) approved plans for a national engineering lab to support the research and development of deep learning technologies. The lab will be online only, without a physical presence. The NDRC commissioned Baidu, the Chinese search engine giant, to create the lab in collaboration with Tsinghua and Beijing Universities, as well as the China Academy of Information and Communications Technology, and the China Electronics Standardization Institute. The project will be led by Baidu's deep learning institute chief Lin Yuanqing and scientist Xu Wei, along with academics from the Chinese Academy of Sciences, Zhang Bo and Li Wei.
Demystifying AI – The AI explosion
This is an article I had originally written as part of a stream of work that has now been put on hold indefinitely. I thought it a shame for it to languish in OneNote. Well that is a very good question. To be perfectly frank, not that much has changed of late in the world of Artificial Intelligence (AI) as a whole that should justify all the current excitement. That's not to say that there isn't cool stuff going on; there really is great progress being made… in the world of Machine Learning.
Combating Adversarial Attacks Using Sparse Representations
Gopalakrishnan, Soorya, Marzi, Zhinus, Madhow, Upamanyu, Pedarsani, Ramtin
It is by now well-known that small adversarial perturbations can induce classification errors in deep neural networks (DNNs). In this paper, we make the case that sparse representations of the input data are a crucial tool for combating such attacks. For linear classifiers, we show that a sparsifying front end is provably effective against $\ell_{\infty}$-bounded attacks, reducing output distortion due to the attack by a factor of roughly $K / N$ where $N$ is the data dimension and $K$ is the sparsity level. We then extend this concept to DNNs, showing that a "locally linear" model can be used to develop a theoretical foundation for crafting attacks and defenses. Experimental results for the MNIST dataset show the efficacy of the proposed sparsifying front end.
Approximating Continuous Functions by ReLU Nets of Minimal Width
This article concerns the expressive power of depth in deep feed-forward neural nets with ReLU activations. Specifically, we answer the following question: for a fixed $d_{in}\geq 1,$ what is the minimal width $w$ so that neural nets with ReLU activations, input dimension $d_{in}$, hidden layer widths at most $w,$ and arbitrary depth can approximate any continuous, real-valued function of $d_{in}$ variables arbitrarily well? It turns out that this minimal width is exactly equal to $d_{in}+1.$ That is, if all the hidden layer widths are bounded by $d_{in}$, then even in the infinite depth limit, ReLU nets can only express a very limited class of functions, and, on the other hand, any continuous function on the $d_{in}$-dimensional unit cube can be approximated to arbitrary precision by ReLU nets in which all hidden layers have width exactly $d_{in}+1.$ Our construction in fact shows that any continuous function $f:[0,1]^{d_{in}}\to\mathbb R^{d_{out}}$ can be approximated by a net of width $d_{in}+d_{out}$. We obtain quantitative depth estimates for such an approximation in terms of the modulus of continuity of $f$.
A Neural Network Architecture Combining Gated Recurrent Unit (GRU) and Support Vector Machine (SVM) for Intrusion Detection in Network Traffic Data
Gated Recurrent Unit (GRU) is a recently-developed variation of the long short-term memory (LSTM) unit, both of which are types of recurrent neural network (RNN). Through empirical evidence, both models have been proven to be effective in a wide variety of machine learning tasks such as natural language processing (Wen et al., 2015), speech recognition (Chorowski et al., 2015), and text classification (Yang et al., 2016). Conventionally, like most neural networks, both of the aforementioned RNN variants employ the Softmax function as its final output layer for its prediction, and the cross-entropy function for computing its loss. In this paper, we present an amendment to this norm by introducing linear support vector machine (SVM) as the replacement for Softmax in the final output layer of a GRU model. Furthermore, the cross-entropy function shall be replaced with a margin-based function. While there have been similar studies (Alalshekmubarak & Smith, 2013; Tang, 2013), this proposal is primarily intended for binary classification on intrusion detection using the 2013 network traffic data from the honeypot systems of Kyoto University. Results show that the GRU-SVM model performs relatively higher than the conventional GRU-Softmax model. The proposed model reached a training accuracy of ~81.54% and a testing accuracy of ~84.15%, while the latter was able to reach a training accuracy of ~63.07% and a testing accuracy of ~70.75%. In addition, the juxtaposition of these two final output layers indicate that the SVM would outperform Softmax in prediction time - a theoretical implication which was supported by the actual training and testing time in the study.
Speech Recognition: Keyword Spotting Through Image Recognition
Gouda, Sanjay Krishna, Kanetkar, Salil, Harrison, David, Warmuth, Manfred K
The problem of identifying voice commands has always been a challenge due to the presence of noise and variability in speed, pitch, etc. We will compare the efficacies of several neural network architectures for the speech recognition problem. In particular, we will build a model to determine whether a one second audio clip contains a particular word (out of a set of 10), an unknown word, or silence. The models to be implemented are a CNN recommended by the Tensorflow Speech Recognition tutorial, a low-latency CNN, and an adversarially trained CNN. The result is a demonstration of how to convert a problem in audio recognition to the better-studied domain of image classification, where the powerful techniques of convolutional neural networks are fully developed. Additionally, we demonstrate the applicability of the technique of Virtual Adversarial Training (VAT) to this problem domain, functioning as a powerful regularizer with promising potential future applications.
Customer Analytics: Using Deep Learning With Keras To Predict Customer Churn
Customer churn is a problem that all companies need to monitor, especially those that depend on subscription-based revenue streams. The simple fact is that most organizations have data that can be used to target these individuals and to understand the key drivers of churn, and we now have Keras for Deep Learning available in R (Yes, in R!!), which predicted customer churn with 82% accuracy. We're super excited for this article because we are using the new keras package to produce an Artificial Neural Network (ANN) model on the IBM Watson Telco Customer Churn Data Set! As for most business problems, it's equally important to explain what features drive the model, which is why we'll use the lime package for explainability. In addition, we use three new packages to assist with Machine Learning (ML): recipes for preprocessing, rsample for sampling data and yardstick for model metrics. These are relatively new additions to CRAN developed by Max Kuhn at RStudio (creator of the caret package). It seems that R is quickly developing ML tools that rival Python. Good news if you're interested in applying Deep Learning in R! We are so let's get going!! Customer churn refers to the situation when a customer ends their relationship with a company, and it's a costly problem. Customers are the fuel that powers a business. Further, it's much more difficult and costly to gain new customers than it is to retain existing customers. As a result, organizations need to focus on reducing customer churn. The good news is that machine learning can help. For many businesses that offer subscription based services, it's critical to both predict customer churn and explain what features relate to customer churn.
Applications of Machine Learning/Deep Learning/Data Science/AI in real-life
The advertisements you see while browsing any kind of website or the mobile application you use, have ever thought how the advertisement is so precise about your choice, the answer to it is the by the use of Machine Learning it collects the data of your previous browsing and predicts your likes and dislikes. The maps nowadays are so advanced that they used to show the current traffic at a particular, have you thought how this works the answer to it is also an application Machine Learning it collects the data of the particular route which contains the traffic details and use these details for prediction. There are several voice assistants in the market which helps your life make better, This is also the application of machine learning as you know it first asks you to pronounce some words which it uses for data collection and then using this data it recognizes your voice. Face Detection is evolving and getting further accurate day by day it is now been used in offices for attendance, This is also an application of Machine Learning in which it used deep learning to detect your face. These are some real-life examples of Machine Learning, Data Science and Artificial intelligence and there are many more.