Deep Learning
Link Prediction with Deep Learning Models
Deep Learning has been used extensively in many applications by researchers. With the increased attraction to Deep Learning, more and more unique models are created each year. However, sometimes some of the model details are not included in the publications. This makes using new Deep Learning models for research a time-consuming task for researchers. In order to tackle with this problem, we propose a prediction mechanism for the missing information in the model.
PyTorch Introduces Native Automatic Mixed Precision Training
With the increasing size of deep learning models, the memory and compute demands too have increased. Techniques have been developed to train deep neural networks faster. One approach is to use half-precision floating-point numbers; FP16 instead of FP32. Recently, researchers have found that using them together is a smarter choice. Mixed precision is one such technique, which can be used to train with half-precision while maintaining the network accuracy achieved with single precision.
Recurrent Neural Networks in Tensorflow
Recurrent Neural Networks in Tensorflow will help you in understanding why we need Recurrent Neural Networks (RNN) and what exactly it is. It also explains few issues with training a Recurrent Neural Network and how to overcome those challenges using LSTMs. Recurrent Neural Networks in Tensorflow will help you in understanding why we need Recurrent Neural Networks (RNN) and what exactly it is. It also explains few issues with training a Recurrent Neural Network and how to overcome those challenges using LSTMs.
Alphabet's DeepMind AI Has Mastered Over 50 Games, Including Several Atari Classics โ TechEBlog
Alphabet's DeepMind Technologies created a neural network that learns how to play video games in a fashion similar to that of humans. It's also a Neural Turing machine, or a neural network capable of accessing an external memory like a conventional Turing machine, resulting in a computer that mimics the short-term memory of the human brain. Read more for a video show just some of the games it has mastered, including several Atari classics, like Breakout. Unlike other AIs, DeepMind's system is not pre-programmed, as it learns from experience, using only raw pixels as data input. This system is tested on video games, notably early arcade games, such as Space Invaders or Breakout.
Deep Learning - Deep Convolutional Generative Adversarial Networks Basics Vinod Sharma's Blog
I introduced the basic analogy, concept, and ideas behind "How GANs work". This post will do a little bit of a deep dive. Generative Adversarial Networks are a class of algorithms used in the unsupervised learning environment. As the name suggests they are called Adversarial Networks because they are is made up of two competing neural networks. Both networks compete with each other to achieve a zero-sum game. Both neural networks are assigned different job role i.e. contesting with each other. The process in GANs involves automatically learning to discover the regularities or patterns in input data.
Neural Network from Scratch Using PyTorch
In this article I show how to build a neural network from scratch. The example is simple and short to make it easier to understand but I haven't took any shortcuts to hide details. First we create some random data. The parameters are initialized using normal distribution where mean is 0 and variance 1. The neural network contains two linear functions and one non-linear function between them.
Identifying Semantically Duplicate Questions Using Data Science Approach: A Quora Case Study
Ansari, Navedanjum, Sharma, Rajesh
Identifying semantically identical questions on, Question and Answering social media platforms like Quora is exceptionally significant to ensure that the quality and the quantity of content are presented to users, based on the intent of the question and thus enriching overall user experience. Detecting duplicate questions is a challenging problem because natural language is very expressive, and a unique intent can be conveyed using different words, phrases, and sentence structuring. Machine learning and deep learning methods are known to have accomplished superior results over traditional natural language processing techniques in identifying similar texts. In this paper, taking Quora for our case study, we explored and applied different machine learning and deep learning techniques on the task of identifying duplicate questions on Quora's dataset. By using feature engineering, feature importance techniques, and experimenting with seven selected machine learning classifiers, we demonstrated that our models outperformed previous studies on this task. Xgboost model with character level term frequency and inverse term frequency is our best machine learning model that has also outperformed a few of the Deep learning baseline models. We applied deep learning techniques to model four different deep neural networks of multiple layers consisting of Glove embeddings, Long Short Term Memory, Convolution, Max pooling, Dense, Batch Normalization, Activation functions, and model merge. Our deep learning models achieved better accuracy than machine learning models. Three out of four proposed architectures outperformed the accuracy from previous machine learning and deep learning research work, two out of four models outperformed accuracy from previous deep learning study on Quora's question pair dataset, and our best model achieved accuracy of 85.82% which is close to Quora state of the art accuracy.
A Committee of Convolutional Neural Networks for Image Classication in the Concurrent Presence of Feature and Label Noise
Kaลบmierczak, Stanisลaw, Maลdziuk, Jacek
Image classification has become a ubiquitous task. Models trained on good quality data achieve accuracy which in some application domains is already above human-level performance. Unfortunately, real-world data are quite often degenerated by the noise existing in features and/or labels. There are quite many papers that handle the problem of either feature or label noise, separately. However, to the best of our knowledge, this piece of research is the first attempt to address the problem of concurrent occurrence of both types of noise. Basing on the MNIST, CIFAR-10 and CIFAR-100 datasets, we experimentally proved that the difference by which committees beat single models increases along with noise level, no matter it is an attribute or label disruption. Thus, it makes ensembles legitimate to be applied to noisy images with noisy labels. The aforementioned committees' advantage over single models is positively correlated with dataset difficulty level as well. We propose three committee selection algorithms that outperform a strong baseline algorithm which relies on an ensemble of individual (nonassociated) best models.
Protecting Classifiers From Attacks. A Bayesian Approach
Gallego, Victor, Naveiro, Roi, Redondo, Alberto, Insua, David Rios, Ruggeri, Fabrizio
Over this decade, an increasing number of processes is being automated through classification algorithms, being essential that these are robust and reliable if we are to trust key operations based on their output. State-of-the-art classifiers perform extraordinarily well on standard data, but they have been shown to be vulnerable to adversarial examples, data instances specifically targeted at fooling the algorithms (Comiter, 2019). As a fundamental hypothesis, algorithms rely on the use of independent and identically distributed (iid) data for both the training and test phases. However, security aspects in classification, which form part of the field of adversarial machine learning (AML), question such hypothesis due to the presence of adversaries ready to modify the data to obtain a benefit and, thus, making both distributions differ. Stemming from the pioneering work in adversarial classification (AC) in Dalvi et al. (2004), the paradigm used to model the confrontation between adversaries and classification systems has been game theory, see recent reviews in Biggio and Roli (2018) and Zhou et al. (2018). As an example, the most popular attacks, including the fast gradient sign method (FGSM) (Goodfellow et al., 2014b), may be viewed from a game-theoretic perspective. Similarly, two of the most promising defence techniques, adversarial training (AT) (Madry et al., 2018), which trains the defender model with attacked samples, and adversarial logit pairing (ALP) (Kannan et al., 2018), which encourages the logits of the model to be the same for both standard and adversarial inputs, may be framed in game theoretic terms. This perspective typically entails common knowledge hypothesis (Hargreaves-Heap and Varoufakis, 2004) which, from a fundamental point of view, are not sustainable in settings such as security, as adversaries try to hide and conceal information. Recent work (Naveiro et al., 2019) presented ACRA, a novel approach for AC based on Adversarial Risk
Efficient Synthesis of Compact Deep Neural Networks
Xia, Wenhan, Yin, Hongxu, Jha, Niraj K.
Deep neural networks (DNNs) have been deployed in myriad machine learning applications. However, advances in their accuracy are often achieved with increasingly complex and deep network architectures. These large, deep models are often unsuitable for real-world applications, due to their massive computational cost, high memory bandwidth, and long latency. For example, autonomous driving requires fast inference based on Internet-of-Things (IoT) edge devices operating under run-time energy and memory storage constraints. In such cases, compact DNNs can facilitate deployment due to their reduced energy consumption, memory requirement, and inference latency. Long short-term memories (LSTMs) are a type of recurrent neural network that have also found widespread use in the context of sequential data modeling. They also face a model size vs. accuracy trade-off. In this paper, we review major approaches for automatically synthesizing compact, yet accurate, DNN/LSTM models suitable for real-world applications. We also outline some challenges and future areas of exploration.