Deep Learning
Deep Learning for Self-Driving Cars
I would suggest you all to check out their example on how to train the network on the cloud with full version control by using the Valohai machine learning platform (www.valohai.com). We all know self-driving cars is one of the hottest areas of research and business for the tech giants. What seemed like a science-fiction, a few years ago, now seems more like something which is soon to become a part and parcel of life. The reason, I am saying "soon to be" is because of the fact that even though companies like Tesla, Nissan, Cadillac do have self-driving car assistance software, but, they still require a human to keep an eye on the road and take control when needed. However, it is fascinating to see how far we have come in terms of innovation and how fast technology is advancing. So much so, that now, with the help of basic deep learning, neural network magic, we can build our own pipeline for autonomous driving!
What Are Neural Networks?
Many of the biggest advances in AI are driven by artificial neural networks. Artificial Neural Networks (ANNs) are the connection of mathematical functions joined together in a format inspired by the neural networks found in the human brain. These ANNs are capable of extracting complex patterns from data, applying these patterns to unseen data to classify/recognize the data. In this way, the machine "learns". That's a quick rundown on neural networks, but let's take a closer look at neural networks to better understand what they are and how they operate.
Your Next Car Will Be Watching You More Than It's Watching the Road
When you think of artificial intelligence and cars, the first thing that likely comes to mind is ambitious self-driving vehicle projects of tech giants like Google, Uber, and probably Apple. Most of these companies are leveraging AI to create cars that can understand their environments and navigate roads under different conditions, and hopefully, make driving safer--eventually. What's received less attention is the use of AI inside cars. Thanks to advances in deep learning, it has become possible to develop technologies that can determine what is happening inside vehicles and make the ride safer and more pleasant--all while creating new privacy and security risks. For better or worse, many applications of in-car AI are right around the corner.
Spectra2pix: Generating Nanostructure Images from Spectra
The design of the nanostructures that are used in the field of nano-photonics has remained complex, very often relying on the intuition and expertise of the designer, ultimately limiting the reach and penetration of this groundbreaking approach. Recently, there has been an increasing number of studies suggesting to apply Machine Learning techniques for the design of nanostructures. Most of these studies engage Deep Learning techniques, which entails training a Deep Neural Network (DNN) to approximate the highly non-linear function of the underlying physical process between spectra and nanostructures. At the end of the training, the DNN allows an on-demand design of nanostructures, i.e. the model can infer nanostructure geometries for desired spectra. In this work, we introduce spectra2pix, which is a model DNN trained to generate 2D images of the designed nanostructures.
World's best Go player quits because AI has become too powerful
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Financial Time Series Forecasting with Deep Learning : A Systematic Literature Review: 2005-2019
Sezer, Omer Berat, Gudelek, Mehmet Ugur, Ozbayoglu, Ahmet Murat
Financial time series forecasting is, without a doubt, the top choice of computational intelligence for finance researchers from both academia and financial industry due to its broad implementation areas and substantial impact. Machine Learning (ML) researchers came up with various models and a vast number of studies have been published accordingly. As such, a significant amount of surveys exist covering ML for financial time series forecasting studies. Lately, Deep Learning (DL) models started appearing within the field, with results that significantly outperform traditional ML counterparts. Even though there is a growing interest in developing models for financial time series forecasting research, there is a lack of review papers that were solely focused on DL for finance. Hence, our motivation in this paper is to provide a comprehensive literature review on DL studies for financial time series forecasting implementations. We not only categorized the studies according to their intended forecasting implementation areas, such as index, forex, commodity forecasting, but also grouped them based on their DL model choices, such as Convolutional Neural Networks (CNNs), Deep Belief Networks (DBNs), Long-Short Term Memory (LSTM). We also tried to envision the future for the field by highlighting the possible setbacks and opportunities, so the interested researchers can benefit.
Refinements of Barndorff-Nielsen and Shephard model: an analysis of crude oil price with machine learning
SenGupta, Indranil, Nganje, William, Hanson, Erik
A commonly used stochastic model for derivative and commodity market analysis is the Barndorff-Nielsen and Shephard (BN-S) model. Though this model is very efficient and analytically tractable, it suffers from the absence of long range dependence and many other issues. For this paper, the analysis is restricted to crude oil price dynamics. A simple way of improving the BN-S model with the implementation of various machine learning algorithms is proposed. This refined BN-S model is more efficient and has fewer parameters than other models which are used in practice as improvements of the BN-S model. The procedure and the model show the application of data science for extracting a "deterministic component" out of processes that are usually considered to be completely stochastic. Empirical applications validate the efficacy of the proposed model for long range dependence.
Attentive Modality Hopping Mechanism for Speech Emotion Recognition
Yoon, Seunghyun, Dey, Subhadeep, Lee, Hwanhee, Jung, Kyomin
In this work, we explore the impact of visual modality in addition to speech and text for improving the accuracy of the emotion detection system. The traditional approaches tackle this task by fusing the knowledge from the various modalities independently for performing emotion classification. In contrast to these approaches, we tackle the problem by introducing an attention mechanism to combine the information. In this regard, we first apply a neural network to obtain hidden representations of the modalities. Then, the attention mechanism is defined to select and aggregate important parts of the video data by conditioning on the audio and text data. Furthermore, the attention mechanism is again applied to attend important parts of the speech and textual data, by considering other modality. Experiments are performed on the standard IEMOCAP dataset using all three modalities (audio, text, and video). The achieved results show a significant improvement of 3.65% in terms of weighted accuracy compared to the baseline system.
Embedding and learning with signatures
Sequential and temporal data arise in many fields of research, such as quantitative finance, medicine, or computer vision. The present article is concerned with a novel approach for sequential learning, called the signature method, and rooted in rough path theory. Its basic principle is to represent multidimensional paths by a graded feature set of their iterated integrals, called the signature. This approach relies critically on an embedding principle, which consists in representing discretely sampled data as paths, i.e., functions from $[0,1]$ to $R^d$. After a survey of machine learning methodologies for signatures, we investigate the influence of embeddings on prediction accuracy with an in-depth study of three recent and challenging datasets. We show that a specific embedding, called lead-lag, is systematically better, whatever the dataset or algorithm used. Moreover, we emphasize through an empirical study that computing signatures over the whole path domain does not lead to a loss of local information. We conclude that, with a good embedding, the signature combined with a simple algorithm achieves results competitive with state-of-the-art, domain-specific approaches.