Popular Science Lecture - 82

The Nobel Prize in Physics 2024


Venue: Anna Centenary Library,
Kotturpuram
Chennai

October 20, 2024
4:00 pm - 6:00 pm
Organised by Anna Centenary Library & TNSF

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About Program







This is part of its efforts to popularize science to the general public and students who are pursuing science as their career. TNSF attempt to focus on students on higher science as everyone knows that learning of science at college within the curriculum is not enough to acquire holistic knowledge of science at the appropriate time. Hence, to fill the gap between what students are acquiring through the curriculum and what it is required, TNSF is planning its activities on higher science to students who are pursuing higher education.



About the Lecture
The division between physical and living systems has blurred since the mid-20th century. Scientists like Bohr, Schrödinger, McCulloch, and Pitts showed that life and mind can be explained through simple physical models without invoking "vitalism." Hopfield’s 1982 work linked neuron networks and memory to energy landscapes, introducing physicists to brain science. He demonstrated how brain states transition between energy levels, as in recalling memories. While his model didn't account for the brain's hierarchical structure, Hinton extended it with his Boltzmann machine model, incorporating layers of neurons and giving rise to the deep learning paradigm, which is now revolutionizing AI. The talk explores this journey in understanding the brain through physics.


Going deeper towards artificial general intelligence
The early days of AI succeeded in putting simpler theories of mind on a strong mathematical footing. Even in the 80s, researchers realised that representing complex functions using networks of neurons would require increasing the capacity of these networks to store more information. But a tractable way of “training” these networks or estimating the parameters eluded them. In the early part of this millennium, Hinton and his students used a simpler form of the Boltzmann machine - the Restricted Boltzmann Machine (RBM) - to provide a framework for layer-wise training of deep networks. This started the deep learning revolution that has led to the immense impact of AI on all walks of life, culminating in the twin Nobel awards this year. This talk will give an overview of the recent developments in deep learning and AI leading up to the current GenAI breakthroughs.

இயற்பியல் மற்றும் உயிரியல் அமைப்புகளுக்கு இடையிலான பிரிவு 20ஆம் நூற்றாண்டின் நடுப்பகுதியிலிருந்து மங்கிவிட்டது. Bohr, Schrödinger, McCulloch, Pitts போன்ற விஞ்ஞானிகள், உயிர்க்கலையோ மனதையோ "உயிர்மை" போன்ற தனித்துவமான சிறப்புகளை தேவையில்லாமல், எளிய இயற்பியல் மாதிரிகள் மூலம் விளக்க முடியும் என்பதை காட்டியுள்ளனர். 1982ஆம் ஆண்டில் Hopfield செய்த ஆராய்ச்சி, நரம்பு அமைப்புகளையும் நினைவகத்தையும் ஆற்றல் நிலப்பரப்புகளுடன் தொடர்புபடுத்தியது, இதன் மூலம் இயற்பியலாளர்கள் மூளை விஞ்ஞானத்துக்குள் நுழைந்தனர். அவர், மூளை நிலைகள் நினைவுகளை நினைவுபடுத்தும் போது ஆற்றல் நிலைகளுக்கு இடையே எவ்வாறு மாறுகிறது என்பதை விளக்கினார். Hopfield இன் மாதிரி மூளையின் பரம்பரை அமைப்பை கணக்கில் எடுத்துக் கொள்ளவில்லை என்றாலும், Hinton, Boltzmann இயந்திர மாதிரியை பயன்படுத்தி நரம்பு அடுக்குகளை இணைத்தார், இதன் மூலம் இன்று செயற்கை நுண்ணறிவில் புரட்சியைக் கொண்டுவரும் "டீப் லெர்னிங்" (deep learning) முறை உருவானது. இந்த உரை, இயற்பியலின் மூலம் மூளைச் செயல்முறையை விளங்கிக் கொள்ளும் இந்தப் பயணத்தை ஆராய்கிறது.

SCHEDULE

Time: 4:00 pm to 6:00 pm - October 20, 2024

Attendance Registration starts at 3:30 pm

4:00 pm

Introduction

4:10 pm

Dr. Sitabhra Sinha
Professor in Physics, IMSc, Chennai

From Magnets to the Mind: How Hopfield and Hinton Revolutionized Physics

4:55 pm

Dr. Balaraman Ravindran
HoD ⋅ Department of DSAI, IIT Madras

Going deeper towards artificial general intelligence

5:40 pm

Q & A

Speakers

Dr. Sitabhra Sinha

Dr. Sitabhra Sinha

Dr. Sitabhra Sinha, is a Professor in the Physics group of the Institute of Mathematical Sciences (IMSc) at Chennai. Ph.D in nonlinear dynamics of recurrent neural network models done at the Machine Intelligence Unit, Indian Statistical Institute, Calcutta (1994-1998). Postdoctoral research on nonlinear dynamics of spatially extended systems with focus on biological systems at the Department of Physics, Indian Institute of Science at Bangalore (1998-2000 and 2001-2002) and Weill Medical College of Cornell University at New York City (2000-2001)

Dr. Balaraman Ravindran

Dr. Balaraman Ravindran

Professor B. Ravindran heads the Department of Data Science and Artificial Intelligence (DSAI), the Wadhwani School of Data Science and Artificial Intelligence (WSAI) the Robert Bosch Centre for Data Science & Artificial Intelligence (RBCDSAI) and the Centre for Responsible AI (CeRAI) at IIT Madras.
Along with that, he is also the Mindtree Faculty Fellow at IIT Madras. Currently, his research interests are centred on learning from and through interactions and span the areas of geometric deep learning and reinforcement learning.
He received his PhD from the University of Massachusetts, Amherst and his Master’s degree from the Indian Institute of Science, Bangalore. He is a senior member of the Association for Advancement of AI (AAAI) and an ACM Distinguished Member.

Venue

Anna Centenary Library,
Kotturpuram,
Chennai

Call

+91 9176512565

Email us

tamilnadutnsfchennai@gmail.com

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Talk on Climate Change
LHC and Detection of Higgs Boson
Evolution And Datura - பரிணாம வளர்ச்சியும் ஊமத்தையும்
Science for Peace
Data Science, Artificial Intelligence and Cryptography
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Nobel Prize 2019 - Physiology and Medicine
Nobel Prize 2019 - Physics
Nobel Prize 2019 - Chemistry
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Demystifying Coronavirus
The discovery of Hepatitis C virus
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