Oceania
CommBank to launch new machine learning-backed banking app ZDNet
The Commonwealth Bank of Australia (CBA) has announced a trial of a redesigned banking app that it says has been backed by "world-leading" machine learning, data analytics, and behavioural science. The bank said its app boasts 5.3 million unique users and more than 6.5 million log-ons per day. It expects the redesign will provide the "first completely personalised and smart digital banking experience in Australia, backed by world-leading application of machine learning technology". According to chief digital officer Pete Steel, CBA has a "unique ability to use technology and innovation capabilities to support good financial habits". "We're using a combination of cutting edge machine learning technology, data analytics, and behavioural science to develop smart banking features to create a highly personalised digital banking experience," he said.
A Boxology of Design Patterns for Hybrid Learning and Reasoning Systems
van Harmelen, Frank, Teije, Annette ten
We propose a set of compositional design patterns to describe a large variety of systems that combine statistical techniques from machine learning with symbolic techniques from knowledge representation. As in other areas of computer science (knowledge engineering, software engineering, ontology engineering, process mining and others), such design patterns help to systematize the literature, clarify which combinations of techniques serve which purposes, and encourage re-use of software components. We have validated our set of compositional design patterns against a large body of recent literature.
Multilabel Automated Recognition of Emotions Induced Through Music
Paolizzo, Fabio, Pichierri, Natalia, Casali, Daniele, Giardino, Daniele, Matta, Marco, Costantini, Giovanni
Music has the power of inducing emotions, and human beings exploit such a phenomenon in order to empower a variety of mental states and activities, both positively and negatively. The study of emotions and music has a long and still vibrant tradition. New findings and changes of perspective in the field are not uncommon. More recent is the field investigating music emotion recognition through computational means. Music emotion recognition (MER) is an emerging and cross-disciplinary field spanning information retrieval (audio, symbolic and metadata) and machine learning, on a strong backing of music cognition (semiology of music and psychology) and music theory.
Arterial incident duration prediction using a bi-level framework of extreme gradient-tree boosting
Mihaita, Adriana-Simona, Liu, Zheyuan, Cai, Chen, Rizoiu, Marian-Andrei
Abstract: Predicting traffic incident duration is a major challenge for many traffic centres around the world. Most research studies focus on predicting the incident duration on motorways rather than arterial roads, due to a high network complexity and lack of data. In this paper we propose a bi-level framework for predicting the accident duration on arterial road networks in Sydney, based on operational requirements of incident clearance target which is less than 45 minutes. Using incident baseline information, we first deploy a classification method using various ensemble tree models in order to predict whether a new incident will be cleared in less than 45min or not. If the incident was classified as short-term, then various regression models are developed for predicting the actual incident duration in minutes by incorporating various traffic flow features. After outlier removal and intensive model hyper-parameter tuning through randomized search and cross-validation, we show that the extreme gradient boost approach outperformed all models, including the gradient-boosted decision-trees by almost 53%. Finally, we perform a feature importance evaluation for incident duration prediction and show that the best prediction results are obtained when leveraging the real-time traffic flow in vicinity road sections to the reported accident location. Initial methods used to predict the incident duration were 1. Introduction Bayesian classifiers [5], discrete choice models (DCM) [6], probabilistic distribution analyses [7], and the hazard-based Traffic congestion is a major concern for many cities duration models (HBDM) [8].
Chinese startup begins mass-producing self-driving delivery vans in world's first
A startup in China will be the first company in the world to begin mass-producing self-driving delivery vehicles for some of the country's biggest commerce giants. According to a report from Bloomberg, the company Neolix has begun production on 1,000 level four autonomous vehicles that it plans to roll out in China throughout the next year. The tiny vans, which are essentially four-wheeled robots outfitted with trunks for storage, are capable of navigating their environment without any human pilot and have already garnered interest from two of China's biggest retailers: Huawei and JD.com. Neolix's robotic courier will cost around $30,000 each and could usher in a new era for e-commerce in China where companies like Alibaba have exploded in scope. In 2019 alone, Alibaba has generated about $152 billion.
A Parameterized Perspective on Protecting Elections
Dey, Palash, Misra, Neeldhara, Nath, Swaprava, Shakya, Garima
We study the parameterized complexity of the optimal defense and optimal attack problems in voting. In both the problems, the input is a set of voter groups (every voter group is a set of votes) and two integers $k_a$ and $k_d$ corresponding to respectively the number of voter groups the attacker can attack and the number of voter groups the defender can defend. A voter group gets removed from the election if it is attacked but not defended. In the optimal defense problem, we want to know if it is possible for the defender to commit to a strategy of defending at most $k_d$ voter groups such that, no matter which $k_a$ voter groups the attacker attacks, the outcome of the election does not change. In the optimal attack problem, we want to know if it is possible for the attacker to commit to a strategy of attacking $k_a$ voter groups such that, no matter which $k_d$ voter groups the defender defends, the outcome of the election is always different from the original (without any attack) one.
Deep Scale-spaces: Equivariance Over Scale
Worrall, Daniel E., Welling, Max
We introduce deep scale-spaces (DSS), a generalization of convolutional neural networks, exploiting the scale symmetry structure of conventional image recognition tasks. Put plainly, the class of an image is invariant to the scale at which it is viewed. We construct scale equivariant cross-correlations based on a principled extension of convolutions, grounded in the theory of scale-spaces and semigroups. As a very basic operation, these cross-correlations can be used in almost any modern deep learning architecture in a plug-and-play manner. We demonstrate our networks on the Patch Camelyon and Cityscapes datasets, to prove their utility and perform introspective studies to further understand their properties.
Uncertainty-based Continual Learning with Adaptive Regularization
Ahn, Hongjoon, Lee, Donggyu, Cha, Sungmin, Moon, Taesup
We introduce a new regularization-based continual learning algorithm, dubbed as Uncertainty-regularized Continual Learning (UCL), that stores much smaller number of additional parameters for regularization terms than the recent state-of-the-art methods. Our approach builds upon the Bayesian learning framework, but makes a fresh interpretation of the variational approximation based regularization term and defines a notion of "uncertainty" for each hidden node in the network. The regularization parameter of each weight is then set to be large when the uncertainty of either of the node that the weight connects is small, since the weights connected to an important node should be less updated when a new task comes. Moreover, we add two additional regularization terms; one that promotes freezing the weights that are identified to be important (i.e., certain) for past tasks, and the other that gives flexibility to control the actively learning parameters for a new task by gracefully forgetting what was learned before. In results, we show our UCL outperforms most of recent state-of-the-art baselines on both supervised learning and reinforcement learning benchmarks.
Global forensic geolocation with deep neural networks
Grantham, Neal S., Reich, Brian J., Laber, Eric B., Pacifici, Krishna, Dunn, Robert R., Fierer, Noah, Gebert, Matthew, Allwood, Julia S., Faith, Seth A.
An important problem in forensic analyses is identifying the provenance of materials at a crime scene, such as biological material on a piece of clothing. This procedure, known as geolocation, is conventionally guided by expert knowledge of the biological evidence and therefore tends to be application-specific, labor-intensive, and subjective. Purely data-driven methods have yet to be fully realized due in part to the lack of a sufficiently rich data source. However, high-throughput sequencing technologies are able to identify tens of thousands of microbial taxa using DNA recovered from a single swab collected from nearly any object or surface. We present a new algorithm for geolocation that aggregates over an ensemble of deep neural network classifiers trained on randomly-generated Voronoi partitions of a spatial domain. We apply the algorithm to fungi present in each of 1300 dust samples collected across the continental United States and then to a global dataset of dust samples from 28 countries. Our algorithm makes remarkably good point predictions with more than half of the geolocation errors under 100 kilometers for the continental analysis and nearly 90% classification accuracy of a sample's country of origin for the global analysis. We suggest that the effectiveness of this model sets the stage for a new, quantitative approach to forensic geolocation.