Goto

Collaborating Authors

 Energy


Fueling intelligent energy with IoT

#artificialintelligence

At Microsoft, building a future that we can all thrive in is at the center of everything we do. On January 16, as part of the announcement that Microsoft will be carbon negative by 2030, we discussed how advances in human prosperity, as measured by GDP growth, are inextricably tied to the use of energy. Microsoft has committed to deploy $1 billion into a new climate innovation fund to accelerate the development of carbon reduction and removal technologies that will help us and the world become carbon negative. The Azure IoT team continues to invest in the platforms and tools that enable solution builders to deliver new energy solutions, customers to empower their workforce, optimize digital operations and build smart, connected, cities, vehicles, and buildings. Earlier, Microsoft committed $50 Million through Microsoft AI for Earth that provides technology, resources, and expertise into the hands of those working to solve our most complex global environmental challenges.


Machine Learning in Thermodynamics: Prediction of Activity Coefficients by Matrix Completion

arXiv.org Machine Learning

Activity coefficients, which are a measure of the non-ideality of liquid mixtures, are a key property in chemical engineering with relevance to modeling chemical and phase equilibria as well as transport processes. Although experimental data on thousands of binary mixtures are available, prediction methods are needed to calculate the activity coefficients in many relevant mixtures that have not been explored to-date. In this report, we propose a probabilistic matrix factorization model for predicting the activity coefficients in arbitrary binary mixtures. Although no physical descriptors for the considered components were used, our method outperforms the state-of-the-art method that has been refined over three decades while requiring much less training effort. This opens perspectives to novel methods for predicting physico-chemical properties of binary mixtures with the potential to revolutionize modeling and simulation in chemical engineering.


Dynamic clustering of time series data

arXiv.org Machine Learning

We propose a new method for clustering multivariate time-series data based on Dynamic Linear Models. Whereas usual time-series clustering methods obtain static membership parameters, our proposal allows each time-series to dynamically change their cluster memberships over time. In this context, a mixture model is assumed for the time series and a flexible Dirichlet evolution for mixture weights allows for smooth membership changes over time. Posterior estimates and predictions can be obtained through Gibbs sampling, but a more efficient method for obtaining point estimates is presented, based on Stochastic Expectation-Maximization and Gradient Descent. Finally, two applications illustrate the usefulness of our proposed model to model both univariate and multivariate time-series: World Bank indicators for the renewable energy consumption of EU nations and the famous Gapminder dataset containing life-expectancy and GDP per capita for various countries.


Artificial Intelligence Aided Next-Generation Networks Relying on UAVs

arXiv.org Artificial Intelligence

Artificial intelligence (AI) assisted unmanned aerial vehicle (UAV) aided next-generation networking is proposed for dynamic environments. In the AI-enabled UAV-aided wireless networks (UAWN), multiple UAVs are employed as aerial base stations, which are capable of rapidly adapting to the dynamic environment by collecting information about the users' position and tele-traffic demands, learning from the environment and acting upon the feedback received from the users. Moreover, AI enables the interaction amongst a swarm of UAVs for cooperative optimization of the system. As a benefit of the AI framework, several challenges of conventional UAWN may be circumvented, leading to enhanced network performance, improved reliability and agile adaptivity. As a further benefit, dynamic trajectory design and resource allocation are demonstrated. Finally, potential research challenges and opportunities are discussed.


Sorbonne Center for Artificial Intelligence at Sorbonne University Abu Dhabi Signs a collaboration agreement

#artificialintelligence

He praised the efforts of the academic and administrative staff, whose efforts were instrumental to the growth and development of the university; which is not only a testament to French-Emirati relations, but is also responsible for more than 2000 graduates who have entered the local workforce. He concluded, "We have collectively taken a giant leap in the direction of progress and development and hope to march on with the design of new programs and initiatives that are fully in line with the national strategy of the UAE." Professor Chambaz commented,"This agreement is the first of many educational and research programmes at Sorbonne Center for Artificial Intelligence and we welcome Total and Thales Group as the key stakeholders in this innovative venture. The aim of cooperating with partners from the UAE and France is to support research in the field, create knowledge, and to integrate artificial intelligence into the sustainable development initiatives of the UAE." Mr. Christophe Sassolas, President Total E&P UAE and Total Country Chair in the UAE added "By bringing the Sorbonne's best researchers and Total use cases in close vicinity with Abu Dhabi ecosystem of research institutions and industry, we are contributing to define the future of Artificial Intelligence in the energy sector. We are proud to bring this opportunity for the next generation of UAE talents!"


Beyond IT-OT integration - Transforming to Cloud & Edge Computing to enable Industry 4.0, AI & ML Capabilities

#artificialintelligence

IT-OT integration is at the core of Industry 4.0, as many use cases require combining and reasoning with data from both OT and IT systems in utilizing data science models, advanced analytics, machine learning and AI to enable insights based cognitive and digital ways of working. As part of the digital transformation, few of the leading industrial products, oil and gas, downstream & chemicals manufacturing companies have already embarked on this journey by initiating data engineering and data integration efforts, developing or implementing data information management systems and by building massive plant and enterprise data lakes. These will facilitate implementation of advanced analytics and AI use case pilots / MVPs for integrated and collaborative operations and scaling up to production to realize the proposed business benefits. At the same time, many of the enterprise and industrial systems have been or are being transformed and migrated to public and private clouds / datacenters due to the cost and efficiency and strategic advantages. Given the above context, the leading companies need to start thinking in terms of "Cloud" and "Edge" computing capabilities with an objective to "centralize where you can in public & private clouds, distribute when you have to the edge".


Regret Bounds for Decentralized Learning in Cooperative Multi-Agent Dynamical Systems

arXiv.org Machine Learning

Regret analysis is challenging in Multi-Agent Reinforcement Learning (MARL) primarily due to the dynamical environments and the decentralized information among agents. We attempt to solve this challenge in the context of decentralized learning in multi-agent linear-quadratic (LQ) dynamical systems. We begin with a simple setup consisting of two agents and two dynamically decoupled stochastic linear systems, each system controlled by an agent. The systems are coupled through a quadratic cost function. When both systems' dynamics are unknown and there is no communication among the agents, we show that no learning policy can generate sub-linear in $T$ regret, where $T$ is the time horizon. When only one system's dynamics are unknown and there is one-directional communication from the agent controlling the unknown system to the other agent, we propose a MARL algorithm based on the construction of an auxiliary single-agent LQ problem. The auxiliary single-agent problem in the proposed MARL algorithm serves as an implicit coordination mechanism among the two learning agents. This allows the agents to achieve a regret within $O(\sqrt{T})$ of the regret of the auxiliary single-agent problem. Consequently, using existing results for single-agent LQ regret, our algorithm provides a $\tilde{O}(\sqrt{T})$ regret bound. (Here $\tilde{O}(\cdot)$ hides constants and logarithmic factors). Our numerical experiments indicate that this bound is matched in practice. From the two-agent problem, we extend our results to multi-agent LQ systems with certain communication patterns.


The Final Frontier: Deep Learning in Space

arXiv.org Artificial Intelligence

Machine learning, particularly deep learning, is being increasing utilised in space applications, mirroring the groundbreaking success in many earthbound problems. Deploying a space device, e.g. a satellite, is becoming more accessible to small actors due to the development of modular satellites and commercial space launches, which fuels further growth of this area. Deep learning's ability to deliver sophisticated computational intelligence makes it an attractive option to facilitate various tasks on space devices and reduce operational costs. In this work, we identify deep learning in space as one of development directions for mobile and embedded machine learning. We collate various applications of machine learning to space data, such as satellite imaging, and describe how on-device deep learning can meaningfully improve the operation of a spacecraft, such as by reducing communication costs or facilitating navigation. We detail and contextualise compute platform of satellites and draw parallels with embedded systems and current research in deep learning for resource-constrained environments.


Reinforcement Learning-based Autoscaling of Workflows in the Cloud: A Survey

arXiv.org Machine Learning

Reinforcement Learning (RL) has demonstrated a great potential for automatically solving decision making problems in complex uncertain environments. Basically, RL proposes a computational approach that allows learning through interaction in an environment of stochastic behavior, with agents taking actions to maximize some cumulative short-term and long-term rewards. Some of the most impressive results have been shown in Game Theory where agents exhibited super-human performance in games like Go or Starcraft 2, which led to its adoption in many other domains including Cloud Computing. Particularly, workflow autoscaling exploits the Cloud elasticity to optimize the execution of workflows according to a given optimization criteria. This is a decision-making problem in which it is necessary to establish when and how to scale-up/down computational resources; and how to assign them to the upcoming processing workload. Such actions have to be taken considering some optimization criteria in the Cloud, a dynamic and uncertain environment. Motivated by this, many works apply RL to the autoscaling problem in Cloud. In this work we survey exhaustively those proposals from major venues, and uniformly compare them based on a set of proposed taxonomies. We also discuss open problems and provide a prospective of future research in the area.


A Novel Generative Neural Approach for InSAR Joint Phase Filtering and Coherence Estimation

arXiv.org Machine Learning

Earth's physical properties like atmosphere, topography and ground instability can be determined by differencing billions of phase measurements (pixels) in subsequent matching Interferometric Synthetic Aperture Radar (InSAR) images. Quality (coherence) of each pixel can vary from perfect information (1) to complete noise (0), which needs to be quantified, alongside filtering information-bearing pixels. Phase filtering is thus critical to InSAR's Digital Elevation Model (DEM) production pipeline, as it removes spatial inconsistencies (residues), immensely improving the subsequent unwrapping. Recent explosion in quantity of available InSAR data can facilitate Wide Area Monitoring (WAM) over several geographical regions, if effective and efficient automated processing can obviate manual quality-control. Advances in parallel computing architectures and Convolutional Neural Networks (CNNs) which thrive on them to rival human performance on visual pattern recognition makes this approach ideal for InSAR phase filtering for WAM, but remains largely unexplored. We propose "GenInSAR", a CNN-based generative model for joint phase filtering and coherence estimation. We use satellite and simulated InSAR images to show overall superior performance of GenInSAR over five algorithms qualitatively, and quantitatively using Phase and Coherence Root-Mean-Squared-Error, Residue Reduction Percentage, and Phase Cosine Error.