Asia
UAE signs deal to explore AI in air traffic management
The UAE's aviation authority has signed an agreement which will explore the use of artificial intelligence (AI) in the country's air traffic management. The UAE General Civil Aviation Authority (GCAA) and Searidge Technologies have signed the deal to cooperate in pursuing research and development activities. The collaboration is the first in the region and will bring together the technical expertise of Canada-based Searidge Technologies in digital airport solutions and the operational expertise of GCAA, a statement said. Saif Mohammed Al Suwaidi, director general of the GCAA, confirmed that it is the UAE's strategy to explore new technologies and applications in the aviation industry. "We look forward to working with Searidge and believe this collaboration will help advance the use of technology in aviation to optimize safety and efficiency in the UAE and around the globe. The MoU agreement will promote, develop and reinforce administrative, technical and scientific cooperation," added Ahmed Al Jallaf, assistant director general Air Navigation Services, GCAA.
Will Tech Leave Detroit in the Dust?
And Toyota says it's evolving into an entirely different company, one that focuses more on services that move people around. "It's a matter of surviving or dying," says Chief Executive Akio Toyoda. The global auto industry thinks it sees the future, and it will require a transformation without precedent in business history: The giant industrial sector has to turn itself into a nimble provider of software and services. This week brought yet another signal of the forces it's up against: Uber Technologies Inc., which has chalked up about $4.8 billion in operating losses over the last six quarters, is laying plans for an initial public offering that bankers think could value it at $120 billion. That's more than General Motors Co., Ford Motor Co. F 2.14% and Fiat Chrysler Automobiles NV combined.
A Text Classification Application: Poet Detection from Poetry
Sahin, Durmus Ozkan, Kural, Oguz Emre, Kilic, Erdal, Karabina, Armagan
With the widespread use of the internet, the size of the text data increases day by day. Poems can be given as an example of the growing text. In this study, we aim to classify poetry according to poet. Firstly, data set consisting of three different poetry of poets written in English have been constructed. Then, text categorization techniques are implemented on it. Chi-Square technique are used for feature selection. In addition, five different classification algorithms are tried. These algorithms are Sequential minimal optimization, Naive Bayes, C4.5 decision tree, Random Forest and k-nearest neighbors. Although each classifier showed very different results, over the 70% classification success rate was taken by sequential minimal optimization technique.
A Deep Learning Mechanism for Efficient Information Dissemination in Vehicular Floating Content
Manzo, Gaetano, Montenegro, Juan Sebastian Otรกlora, Rizzo, Gianluca
Abstract--Handling the tremendous amount of network data, produced by the explosive growth of mobile traffic volume, is becoming of main priority to achieve desired performance targets efficiently. Opportunistic communication such as Floating Content (FC), can be used to offload part of the cellular traffic volume to vehicular-to-vehicular communication (V2V), leaving to the infrastructure the task of coordinating the communication. Existing FC dimensioning approaches have limitations, mainly due to unrealistic assumptions and on a coarse partitioning of users, which results in over-dimensioning. Shaping the opportunistic communication area is a crucial task to achieve desired application performance efficiently. In this work, we propose a solution for this open challenge. In particular, the broadcasting areas called Anchor Zone (AZ), are selected via a deep learning approach to minimize communication resources achieving desired message availability. No assumption required to fit the classifier in both synthetic and real mobility. A numerical study is made to validate the effectiveness and efficiency of the proposed method. The predicted AZ configuration can achieve an accuracy of 89.7% within 98% of confidence level. By cause of the learning approach, the method performs even better in real scenarios, saving up to 27% of resources compared to previous work analytically modeled. I NTRODUCTION New offloading techniques to cope with the explosive growth in mobile traffic volumes, are a fundamental component of the next generation radio access network (5G). Part of the cellular traffic volume can be offloaded to vehicular-to- vehicular communication (V2V), leaving to the infrastructure the task of managing and coordinating the communication. In this context, of special interest are communication paradigms such as Floating Content (FC), an opportunistic communication scheme for the local dissemination of information [1]. FC as an infrastructure-less communication model, enables probabilistic contents storing in geographically constrained locations - denoted as Anchor Zone (AZ) - and over a limited amount of time based on the application requirements.
G-SMOTE: A GMM-based synthetic minority oversampling technique for imbalanced learning
Imbalanced Learning is an important learning algorithm for the classification models, which have enjoyed much popularity on many applications. Typically, imbalanced learning algorithms can be partitioned into two types, i.e., data level approaches and algorithm level approaches. In this paper, the focus is to develop a robust synthetic minority oversampling technique which falls the umbrella of data level approaches. On one hand, we proposed a method to generate synthetic samples in a high dimensional feature space, instead of a linear sampling space. On the other hand, in the proposed imbalanced learning framework, Gaussian Mixture Model is employed to distinguish the outliers from minority class instances and filter out the synthetic majority class instances. Last and more importantly, an adaptive optimization method is proposed to optimize these parameters in sampling process. By doing so, an effectiveness and efficiency imbalanced learning framework is developed.
Improving the Generalization of Adversarial Training with Domain Adaptation
Song, Chuanbiao, He, Kun, Wang, Liwei, Hopcroft, John E.
By injecting adversarial examples into training data, the adversarial training method is promising for improving the robustness of deep learning models. However, most existing adversarial training approaches are based on a specific type of adversarial attack. It may not provide sufficiently representative samples from the adversarial domain, leading to a weak generalization ability on adversarial examples from other attacks. To scale to large datasets, perturbations on inputs to generate adversarial examples are usually crafted using fast single-step attacks. This work is mainly focused on the adversarial training with the single-step yet efficient FGSM adversary. In this scenario, it is difficult to train a model with great generalization due to the lack of representative adversarial samples, aka the samples are unable to accurately reflect the adversarial domain. To alleviate this problem, we propose a novel Adversarial Training with Domain Adaptation (ATDA) method. Our intuition is regarding adversarial training on FGSM adversary as a domain adaption task with limited number of target domain samples. The main idea is to learn a representation that is semantically meaningful and domain invariant on the clean domain as well as the adversarial domain. Empirical evaluations on Fashion-MNIST, SVHN, CIFAR-10 and CIFAR-100 demonstrate that ATDA can greatly improve the generalization of adversarial training and outperforms state-of-the-art methods on standard benchmark datasets.
Multistep Speed Prediction on Traffic Networks: A Graph Convolutional Sequence-to-Sequence Learning Approach with Attention Mechanism
Zhang, Zhengchao, Li, Meng, Lin, Xi, Wang, Yinhai, He, Fang
China Abstract: Multistep traffic forecasting on road networks is a crucial task in successful intelligent transportation system applications. To capture the complex non-stationary temporal dynamics and spatial dependency in multistep traffic-condition prediction, we propose a novel deep learning framework named attention graph convolutional sequence-to-sequence model (AGC-Seq2Seq). In the proposed deep learning framework, spatial and temporal dependencies are modeled through the Seq2Seq model and graph convolution network separately, and the attention mechanism along with a newly designed training method based on the Seq2Seq architecture is proposed to overcome the difficulty in multistep prediction and further capture the temporal heterogeneity of traffic pattern. We conduct numerical tests to compare AGC-Seq2Seq with other benchmark models using a real-world dataset. The results indicate that our model yields the best prediction performance in terms of various prediction error measures. Keywords: traffic forecasting; deep learning; attention mechanism; graph convolution; multistep prediction; sequence-to-sequence model 1. INTRODUCTION Automobile use has significantly increased in the past few decades owing to the steady development in both technology and economy. However, the increased automobile use has resulted in a series of social problems such as traffic congestion, traffic accidents, energy overconsumption, and carbon emissions (Gao et al., 2011). The intelligent transportation system (ITS) has been considered as a promising solution to improve transportation management and services (Qureshi and Abdullah, 2013; Lin et al., 2017).
Effective extractive summarization using frequency-filtered entity relationship graphs
Sakhadeo, Archit, Srivastava, Nisheeth
Word frequency-based methods for extractive summarization are easy to implement and yield reasonable results across languages. However, they have significant limitations - they ignore the role of context, they offer uneven coverage of topics in a document, and sometimes are disjointed and hard to read. We use a simple premise from linguistic typology - that English sentences are complete descriptors of potential interactions between entities, usually in the order subject-verb-object - to address a subset of these difficulties. We have developed a hybrid model of extractive summarization that combines word-frequency based keyword identification with information from automatically generated entity relationship graphs to select sentences for summaries. Comparative evaluation with word-frequency and topic word-based methods shows that the proposed method is competitive by conventional ROUGE standards, and yields moderately more informative summaries on average, as assessed by a large panel (N 94) of human raters.
Multi-Head Attention with Disagreement Regularization
Li, Jian, Tu, Zhaopeng, Yang, Baosong, Lyu, Michael R., Zhang, Tong
Multi-head attention is appealing for the ability to jointly attend to information from different representation subspaces at different positions. In this work, we introduce a disagreement regularization to explicitly encourage the diversity among multiple attention heads. Specifically, we propose three types of disagreement regularization, which respectively encourage the subspace, the attended positions, and the output representation associated with each attention head to be different from other heads. Experimental results on widely-used WMT14 English-German and WMT17 Chinese-English translation tasks demonstrate the effectiveness and universality of the proposed approach.
Modeling Localness for Self-Attention Networks
Yang, Baosong, Tu, Zhaopeng, Wong, Derek F., Meng, Fandong, Chao, Lidia S., Zhang, Tong
Self-attention networks have proven to be of profound value for its strength of capturing global dependencies. In this work, we propose to model localness for self-attention networks, which enhances the ability of capturing useful local context. We cast localness modeling as a learnable Gaussian bias, which indicates the central and scope of the local region to be paid more attention. The bias is then incorporated into the original attention distribution to form a revised distribution. To maintain the strength of capturing long distance dependencies and enhance the ability of capturing short-range dependencies, we only apply localness modeling to lower layers of self-attention networks. Quantitative and qualitative analyses on Chinese-English and English-German translation tasks demonstrate the effectiveness and universality of the proposed approach.