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Not Yet Skynet – The Past, Present, and Future of Artificial Intelligence

#artificialintelligence

Artificial intelligence is here, and it's being put to work across all manner of industries and applications. While the technology still has someway to go before we see machines capable of true independent thought and decision-making, what we do have is sending waves through the business world. While only 23 percent of businesses have incorporated the technology into the products and services they offer right now, a massive 83 percent have named AI as a strategic priority for the near future. Global spending on cognitive and AI systems is estimated to reach $57.6 billion in 2021 and the AI market is set to grow to become a $190 billion industry by 2025. What are the benefits of AI to businesses according to industry experts?


3 top ASX shares in artificial intelligence

#artificialintelligence

One sector that is expected to boom over the next decade is artificial intelligence. There are many businesses that claim they're part of AI development, so it's hard to know which shares will give the clearest exposure to AI and deliver good returns. All of the top US businesses are doing something with AI one way or another. Microsoft, Alphabet (Google), Facebook, Amazon and Apple are all trying to make their technology better with AI. If it's hard to pick one winner out of a group then why not just buy the whole group?


The Use of Machine Learning and Big Five Personality Taxonomy to Predict Construction Workers' Safety Behaviour

arXiv.org Machine Learning

Research has found that many occupational accidents are foreseeable, being the result of people's unsafe behaviour from a retrospective point of view. The prediction of workers' safety behaviour will enable the prior insights into each worker's behavioural tendency and will be useful in the design of management practices prior to the occurrence of accidents and contribute to the reduction of injury rates. In recent years, researchers have found that people do have stable predispositions to engage in certain safety behavioural patterns which vary among individuals as a function of personality features. In this study, an innovative forecasting model, which employs machine learning algorithms, is developed to estimate construction workers' behavioural tendency based on the Big Five personality taxonomy. The data-driven nature of machine learning technique enabled a reliable estimate of the personality-safety behaviour relationship, which allowed this study to provide novel insight that nonlinearity may exist in the relationship between construction workers' personality traits and safety behaviour. The developed model is found to be sufficient to have satisfactory accuracy in explaining and predicting workers' safety behaviour. This finding provides the empirical evidence to support the usefulness of personality traits as effective predictors of people's safety behaviour at work. In addition, this study could have practical implications. The machine learning model developed can help identify vulnerable workers who are more prone to undertake unsafe behaviours, which is proven to have good prediction accuracy and is thereby potentially useful for decision making and safety management on construction sites.


Pathway Activity Analysis and Metabolite Annotation for Untargeted Metabolomics using Probabilistic Modeling

arXiv.org Machine Learning

Motivation: Untargeted metabolomics comprehensively characterizes small molecules and elucidates activities of biochemical pathways within a biological sample. Despite computational advances, interpreting collected measurements and determining their biological role remains a challenge. Results: To interpret measurements, we present an inference-based approach, termed Probabilistic modeling for Untargeted Metabolomics Analysis (PUMA). Our approach captures measurements and known information about the sample under study in a generative model and uses stochastic sampling to compute posterior probability distributions. PUMA predicts the likelihood of pathways being active, and then derives a probabilistic annotation, which assigns chemical identities to the measurements. PUMA is validated on synthetic datasets. When applied to test cases, the resulting pathway activities are biologically meaningful and distinctly different from those obtained using statistical pathway enrichment techniques. Annotation results are in agreement to those obtained using other tools that utilize additional information in the form of spectral signatures. Importantly, PUMA annotates many additional measurements.


Integrative Generalized Convex Clustering Optimization and Feature Selection for Mixed Multi-View Data

arXiv.org Machine Learning

In mixed multi-view data, multiple sets of diverse features are measured on the same set of samples. By integrating all available data sources, we seek to discover common group structure among the samples that may be hidden in individualistic cluster analyses of a single data-view. While several techniques for such integrative clustering have been explored, we propose and develop a convex formalization that will inherit the strong statistical, mathematical and empirical properties of increasingly popular convex clustering methods. Specifically, our Integrative Generalized Convex Clustering Optimization (iGecco) method employs different convex distances, losses, or divergences for each of the different data views with a joint convex fusion penalty that leads to common groups. Additionally, integrating mixed multi-view data is often challenging when each data source is high-dimensional. To perform feature selection in such scenarios, we develop an adaptive shifted group-lasso penalty that selects features by shrinking them towards their loss-specific centers. Our so-called iGecco+ approach selects features from each data-view that are best for determining the groups, often leading to improved integrative clustering. To fit our model, we develop a new type of generalized multi-block ADMM algorithm using sub-problem approximations that more efficiently fits our model for big data sets. Through a series of numerical experiments and real data examples on text mining and genomics, we show that iGecco+ achieves superior empirical performance for high-dimensional mixed multi-view data.


Marginalized State Distribution Entropy Regularization in Policy Optimization

arXiv.org Machine Learning

Entropy regularization is used to get improved optimization performance in reinforcement learning tasks. A common form of regularization is to maximize policy entropy to avoid premature convergence and lead to more stochastic policies for exploration through action space. However, this does not ensure exploration in the state space. In this work, we instead consider the distribution of discounted weighting of states, and propose to maximize the entropy of a lower bound approximation to the weighting of a state, based on latent space state representation. We propose entropy regularization based on the marginal state distribution, to encourage the policy to have a more uniform distribution over the state space for exploration. Our approach based on marginal state distribution achieves superior state space coverage on complex gridworld domains, that translate into empirical gains in sparse reward 3D maze navigation and continuous control domains compared to entropy regularization with stochastic policies.


Kernel-estimated Nonparametric Overlap-Based Syncytial Clustering

arXiv.org Machine Learning

Commonly-used clustering algorithms usually find ellipsoidal, spherical or other regular-structured clusters, but are more challenged when the underlying groups lack formal structure or definition. Syncytial clustering is the name that we introduce for methods that merge groups obtained from standard clustering algorithms in order to reveal complex group structure in the data. Here, we develop a distribution-free fully-automated syncytial clustering algorithm that can be used with $k$-means and other algorithms. Our approach computes the cumulative distribution function of the normed residuals from an appropriately fit $k$-groups model and calculates the nonparametric overlap between each pair of clusters. Groups with high pairwise overlap are merged as long as the generalized overlap decreases. Our methodology is always a top performer in identifying groups with regular and irregular structures in several datasets and can be applied to datasets with scatter or incomplete records. The approach is also used to identify the distinct kinds of gamma ray bursts in the Burst and Transient Source Experiment 4Br catalog and the distinct kinds of activation in a functional Magnetic Resonance Imaging study.


UBank uses machine learning in new spending tracker

#artificialintelligence

UBank is embracing the industry shift to open data banking through a partnership with Australian fintech, Basiq, leveraging machine learning (ML) to give customers a more complete picture of their finances. The partnership hopes to offer customers predictions of future spending behaviours just by using their UBank app by 2020. This follows UBank launching its third artificial intelligence-based customer assistance offering earlier in the year, and what it claimed was the first digital human home loan application assistant. Dubbed'Mia', short for my interactive agent, the offering is built on digital human technology created by New Zealand company, FaceMe. It taps into IBM's Watson AI engine and designed to help consumers answer real-time questions during the home loan application process.


Mastering Intensive Care: Episode 49: Hugh Montgomery - "We've got to act right now"

#artificialintelligence

Climate change is a conversation we need to be having in Intensive Care circles. If the environmental catastrophe that is unfolding around us continues unabated there may no longer even be Intensive Care Units. The rising global temperatures, the melting ice, the extreme weather events, and their impact on agricultural crops and human habitation may well lead to such a fall in the economy that our healthcare system may not have the financial resources it does now. And given ICUs are the most expensive part of our hospitals, have a guess what might disappear first. So who is there better to listen to about the climate crisis than British intensivist, Professor Hugh Montgomery, a deeply passionate and highly intelligent man, who was a founding member of the UK Climate and Health Council, and who has helped raise awareness about climate change for over 2 decades.


Neural Memory Networks for Robust Classification of Seizure Type

arXiv.org Machine Learning

Classification of seizure type is a key step in the clinical process for evaluating an individual who presents with seizures. It determines the course of clinical diagnosis and treatment, and its impact stretches beyond the clinical domain to epilepsy research and the development of novel therapies. Automated identification of seizure type may facilitate understanding of the disease, and seizure detection and prediction has been the focus of recent research that has sought to exploit the benefits of machine learning and deep learning architectures. Nevertheless, there is not yet a definitive solution for automating the classification of seizure type, a task that must currently be performed by an expert epileptologist. Inspired by recent advances in neural memory networks (NMNs), we introduce a novel approach for the classification of seizure type using electrophysiological data. We first explore the performance of traditional deep learning techniques which use convolutional and recurrent neural networks, and enhance these architectures by using external memory modules with trainable neural plasticity. We show that our model achieves a state-of-the-art weighted F1 score of 0.945 for seizure type classification on the TUH EEG Seizure Corpus with the IBM TUSZ preprocessed data. This work highlights the potential of neural memory networks to support the field of epilepsy research, along with biomedical research and signal analysis more broadly.