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Oxford ML and Physics Seminars
เข้าร่วมเมื่อ 14 ต.ค. 2019
Jonas Buchli & Federico Felici: Magnetic control of tokamak plasmas with deep reinforcement learning
Nuclear fusion using magnetic confinement, in particular in the tokamak configuration, is a promising path towards sustainable energy. A key challenge is to shape and maintain a high-temperature plasma within the tokamak vessel. This requires regulating the plasma position and shape via magnetic fields generated by a set of control coils. In this work, EPFL and DeepMind introduce a new architecture for designing a tokamak magnetic controller based on deep reinforcement learning. The controller is entirely trained on a physics-based simulator and then deployed on the tokamak hardware. They successfully produced and controlled a diverse set of plasma configurations on the Tokamak à Configuration Variable (TCV) device, including a new configuration featuring two plasmas in the vessel simultaneously. The control architecture replaces separate controllers used in traditional architectures with a single control policy and allows focus on ‘what’ to control rather than ‘how’. This represents a notable advance for tokamak feedback control, showing the potential of reinforcement learning to accelerate research in the fusion domain, and is one of the most challenging real-world systems to which reinforcement learning has been applied.
มุมมอง: 1 689
วีดีโอ
Arvind Neelakantan: Text and Code Embeddings
มุมมอง 7682 ปีที่แล้ว
Text embeddings are useful features in many applications such as semantic search and computing text similarity. Previous work typically trains models customized for different use cases, varying in dataset choice, training objective and model architecture. In this work, Arvind Neelakantan (OpenAI) shows that contrastive pre-training on unsupervised data at scale leads to high quality vector repr...
Séamus Davis: Machine learning in electronic-quantum-matter imaging experiments
มุมมอง 3912 ปีที่แล้ว
Today, automated instrumentation and large-scale data acquisition are generating datasets of such large volume and complexity as to defy conventional scientific methodology. Machine learning (ML) shows great promise for research fields such as quantum materials science. Given the success of ML in the analysis of synthetic data representing electronic quantum matter (EQM), the next challenge was...
Mikhail Belkin: From classical statistics to modern deep learning
มุมมอง 1.2K2 ปีที่แล้ว
Recent empirical successes of deep learning have exposed significant gaps in our fundamental understanding of learning and optimization mechanisms. Modern best practices for model selection are in direct contradiction to the methodologies suggested by classical analyses. Similarly, the efficiency of SGD-based local methods used in training modern models, appeared at odds with the standard intui...
Eliu Huerta: AI for Science: Let’s talk business
มุมมอง 1392 ปีที่แล้ว
In this talk, Eliu Huerta (Argonne National Laboratory) discusses how to transform disruptive AI approaches into production scale frameworks for AI-driven scientific discovery. Using big data physics experiments as the driver for the discussion, he touches on a number of different areas that are critical for the adoption and development of AI methodologies. He explores the type of science that ...
Bin Yu: Interpreting Deep Neural Networks towards Trustworthiness
มุมมอง 1732 ปีที่แล้ว
Recent deep learning models have achieved impressive predictive performance by learning complex functions of many variables, often at the cost of interpretability. In this lecture, Professor Bin Yu (UC Berkeley) first defines interpretable machine learning in general and introduces the agglomerative contextual decomposition (ACD) method to interpret neural networks. Extending ACD to the scienti...
Sonia Contera: It from bit? The future of bioinspired computing beyond ML
มุมมอง 6372 ปีที่แล้ว
Solving 21st-century problems usually involves a large amount of data emerging from dynamic complex systems, whose solution increasingly relies on bioinspired algorithms such as artificial neural networks (ANN) implementing machine learning (ML). However, the size and complexity of ANN are limited by the availability of computing resources. Future advances in scale of computations, data capacit...
Huilin Qu: Jet Tagging in the Era of Deep Learning
มุมมอง 1.2K2 ปีที่แล้ว
Machine learning has revolutionized the analysis of large-scale data samples in particle physics and greatly increased the discovery potential for new fundamental laws of nature. Specifically, deep learning has transformed how jet tagging, a critical classification task at high-energy particle colliders such as the CERN LHC, is performed, leading to a drastic improvement in its performance in t...
Stéphane Mallat: Hamiltonian Estimations by Conditional Renormalisation Group and Convolution Nets
มุมมอง 3992 ปีที่แล้ว
Estimating high-dimensional probability distributions and physical Hamiltonians from data is an old outstanding problem. It is typically unstable, specially near phase transitions. In this talk, we revisit this topic with models resulting from multiscale harmonic analysis and neural networks. We show that renormalisation group calculations in wavelet orthonormal bases amount to precondition the...
Craig Mundie: Artificial General Intelligence - The Advent of Polymathic Machines
มุมมอง 1.1K2 ปีที่แล้ว
In this talk, Craig Mundie discusses the general state of development of Artificial General Intelligence (AGI) and speculates that even intermediate capabilities will be sufficient to alter the path and modes of scientific exploration in the relatively near future. Given the pace of progress in the pursuit of general intelligence, he argues there is reason to believe that we will see the arriva...
Nathan Kutz: The Future of Governing Equations
มุมมอง 1.1K2 ปีที่แล้ว
Governing equations provide the technical language for our modern understanding of physics based systems. The derivation of governing equations is typically accomplished by leveraging physical principles such as symmetries, invariances, and/or conservation laws. Governing equations efficiently specify the relationship between a state space variable and its temporal and spatial derivatives. To p...
Tim Green: Highly accurate protein structure prediction with AlphaFold
มุมมอง 1.1K2 ปีที่แล้ว
Proteins are essential to life, and understanding their structure can facilitate a mechanistic understanding of their function. Predicting the three-dimensional structure that a protein will adopt based solely on its amino acid sequence - the structure prediction component of the ‘protein folding problem’ - has been an important open research problem for more than 50 years. AlphaFold, a novel m...
Ricardo Vinuesa: Artificial Intelligence, Computational Fluid Dynamics, and Sustainability
มุมมอง 1.7K2 ปีที่แล้ว
The advent of new powerful deep neural networks (DNNs) has fostered their application in a wide range of research areas, including more recently in fluid mechanics. In this presentation, we cover some of the fundamentals of deep learning applied to computational fluid dynamics (CFD) with Dr. Ricardo Vinuesa (KTH, Stockholm). Furthermore, we explore the capabilities of DNNs to perform various pr...
Andrew Stuart: Learning Solution Operators for PDEs
มุมมอง 7363 ปีที่แล้ว
Neural networks have shown great success at learning function approximators between spaces X and Y, in the setting where X is a finite dimensional Euclidean space and where Y is either a finite dimensional Euclidean space (regression) or a set of finite cardinality (classification); the neural networks learn the approximator from N data pairs {x_n, y_n}. In many problems arising in physics it i...
Rachel Prudden: Probabilistic modelling for atmospheric science: beyond the noise
มุมมอง 3043 ปีที่แล้ว
In both atmospheric science and machine learning, it is important to capture the uncertainty of predictions. This information can avoid the dangers of relying on over-confident predictions which may be incorrect, and help to understand the potential for high-impact rare events. Nonetheless, to focus only on capturing uncertainty risks giving an incomplete picture of the strengths of probabilist...
Laure Zanna: Climate Modeling in the Age of Machine Learning
มุมมอง 4423 ปีที่แล้ว
Laure Zanna: Climate Modeling in the Age of Machine Learning
Tom Andersson: Seasonal Arctic sea ice forecasting with probabilistic deep learning
มุมมอง 8393 ปีที่แล้ว
Tom Andersson: Seasonal Arctic sea ice forecasting with probabilistic deep learning
Adrien Gaidon: Self-supervised 3D vision
มุมมอง 5K3 ปีที่แล้ว
Adrien Gaidon: Self-supervised 3D vision
Steve Oberlin: HPC + AI: How Learned Models Are Revolutionizing Scientific Simulation
มุมมอง 1363 ปีที่แล้ว
Steve Oberlin: HPC AI: How Learned Models Are Revolutionizing Scientific Simulation
David Spergel: Determining the Universe’s Initial Conditions
มุมมอง 9443 ปีที่แล้ว
David Spergel: Determining the Universe’s Initial Conditions
Lode Pollet: Discovering new phases of matter with unsupervised and interpretable SVMs
มุมมอง 2403 ปีที่แล้ว
Lode Pollet: Discovering new phases of matter with unsupervised and interpretable SVMs
Michael Kagan: Generative Model Based Design Optimization and Unfolding
มุมมอง 3603 ปีที่แล้ว
Michael Kagan: Generative Model Based Design Optimization and Unfolding
Sofia Vallecorsa: Quantum Machine Learning in High Energy Physics
มุมมอง 3223 ปีที่แล้ว
Sofia Vallecorsa: Quantum Machine Learning in High Energy Physics
Ard Louis: Deep neural networks have an inbuilt Occam’s razor
มุมมอง 1K3 ปีที่แล้ว
Ard Louis: Deep neural networks have an inbuilt Occam’s razor
Jascha Sohl-Dickstein: Understanding overparameterized neural networks
มุมมอง 9633 ปีที่แล้ว
Jascha Sohl-Dickstein: Understanding overparameterized neural networks
Atılım Güneş Baydin: Probabilistic Programming for Inverse Problems in the Physical Sciences
มุมมอง 2583 ปีที่แล้ว
Atılım Güneş Baydin: Probabilistic Programming for Inverse Problems in the Physical Sciences
Roger Melko: Reconstructing quantum states with generative models
มุมมอง 3093 ปีที่แล้ว
Roger Melko: Reconstructing quantum states with generative models
Phiala Shanahan: Provably exact sampling for first-principles theoretical physics
มุมมอง 2383 ปีที่แล้ว
Phiala Shanahan: Provably exact sampling for first-principles theoretical physics
Victor Bapst: Unveiling the predictive power of static structure in glassy systems
มุมมอง 6023 ปีที่แล้ว
Victor Bapst: Unveiling the predictive power of static structure in glassy systems
Giuseppe Carleo: Many-body quantum wave functions in the era of machine learning
มุมมอง 3964 ปีที่แล้ว
Giuseppe Carleo: Many-body quantum wave functions in the era of machine learning
Interesting, Thanks a lot
unfortunate placement of speaker videos
ahhhhh ummm, AHHHHHH UMMMMM, AHH, UMMMM jesus christ
I am curious about the paper he references at 29:30 which gives bounds for linear regression case. I would appreciate it, if someone can share
This video is 2 years old. Do you have any more recent videos now in light of the recent almost 2,000,000 Sq/Km less sea ice than 2022 levels in Antarctic?
awesome Dr Felici
uhm thanks
All right. Got it. get the gold thing. Get the other thing painted in the other stuff so I can hold other stuff at a different temperature. Laser beams. Oh crap . nevermind . then the math came in. Oh God and you have to graph it out? I'm out of here
An eye-openning project to ML and its application! Very impressive.
Thank you for such a helpful video! Did my dissertation on machine learning in jet tagging and this was a really helpful introduction when I was getting started :)
Amazing talk.
Time Stamps 1:37 Large Hadron Collider setup LHC is located between border of Switzerland & France. Several experiments at the Large Hadron Collider (LHC) use detectors to analyse the myriad of particles produced by collisions in the accelerator: ATLAS, CMS, ALICE. ( My favourite experiemnent is Alpha which studies anti-matter system an anti-hydrogen but for now back to CMS & ATLAS) 2:03 CMS Detector explanation (Transverse slice of CMS showing various components/ sub-systems of the detector and their functions) 3:00 Particle flow algorithm to reconstruct full event. 3:48 Why Jets? 5:13 What kind of particles initiate Jet Tagging? Jet Tagging as a classification problem in machine learning 3 types of tagging - Jet flavour tagging: Distinguish Jets from bottom quarks, charm quarks or light flavoured quarks or gluon jets. - Tagging Hadronic decay of Tao leptons. - Boosted Jets: Particles are produced with very high momentum and high Lorentz boost particles end up coming very close to each other. In Boosted Jet Tagging we are trying to identify decay path such as t-->Wq-->qqq or h/W/Z-->qq and reject as background jets from single quark or gluon which are ubiquitously produced during interactions. 7:26 Main focus is on boosted jet tagging. Example Hadronic decay of highly Lorentz-boosted heavy particles (Higgs/W/Z/top) lead to large- radius jets with distinctive characteristics: Different radiation pattern (“substructure”) such as 3-prong(top), 2- prong(W/Z/H) or 1-prong(gluon/light flavour). 9:33 Jet Representation for Deep Learning: Image Approach 1: Convert Jets to 2D/3D Images and use Computer Vision. Approach 2: Convert to Sequence and use Natural Language Processing. Use Recurrent Neural Network , e.g. GRU/LSTM or 1D CNN. 11:22 DeepAk8 Architecture : Advance deep learning architecture for boosted jet tagging. 14:48 ParticleNet :Point Cloud Representation of a Jet Treat Jet as unordered set of particles.
I dig this guy. I got here from a channeled called “are we alone”
Can this be used to predict depth from UAV cameras? Or is it too focussed on cars
You can, but you must fine-tune them on indoor data sets. Most of the work presented here is only trained for outdoor purposes.
Love your teams work Max Tegmark! Funny timing with your mention of DeepMind AlphaFold at the beginning of this video and just a month later version 2 is announced that crushed version 1.
Very interesting topic
Thanks! :)
It is engaging, compare with SCIENCE AND TECHNOLOGY XXI: New Physica, Physics X.0 & Technology X.0 www.litres.ru/azamat-abdoullaev/science-and-technology-xxi-physics-x-0-technology-x-0/chitat-onlayn/page-5/