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Reading: Geoffrey Hinton and John Hopfield Win 2024 Nobel Prize in Physics
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The Nobel Prize in Physics 2024
PhotoNews Pakistan > Tech > Geoffrey Hinton and John Hopfield Win 2024 Nobel Prize in Physics
Tech

Geoffrey Hinton and John Hopfield Win 2024 Nobel Prize in Physics

Web Desk
By Web Desk Published October 8, 2024 3 Min Read
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The Nobel Prize in Physics 2024 winners US physicist John Hopfield and British-Canadian Geoffrey Hinton. Photo Credits: @NobelPrize (X)
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On Tuesday, the Nobel Prize in Physics was awarded to British-Canadian Geoffrey Hinton and US physicist John Hopfield for their pioneering contributions to the development of artificial intelligence through machine learning and artificial neural networks, as stated by the Nobel jury.

Geoffrey Hinton, often hailed as the “godfather of AI,” along with John Hopfield, facilitated significant advancements in machine learning by leveraging artificial neural networks. But what does this involve?

Mark van der Wilk, a machine learning expert from the University of Oxford, explains that an artificial neural network is a mathematical model inspired by the human brain’s structure. In our brains, networks of neurons strengthen or weaken their connections based on external stimuli, such as sights and sounds, to facilitate learning.

BREAKING NEWS
The Royal Swedish Academy of Sciences has decided to award the 2024 #NobelPrize in Physics to John J. Hopfield and Geoffrey E. Hinton “for foundational discoveries and inventions that enable machine learning with artificial neural networks.” pic.twitter.com/94LT8opG79

— The Nobel Prize (@NobelPrize) October 8, 2024

Artificial neural networks simulate this biological process by replacing neurons with simple computational units known as “nodes” and using training data instead of direct stimuli. This architecture allows the network to learn over time, defining the essence of machine learning.

John Hopfield’s breakthrough in the early 1980s, the “Hopfield network” or “associative memory,” introduced a way for artificial networks to recall from memory, enhancing AI’s capability to identify and correct errors in data patterns.

Geoffrey Hinton’s 1985 introduction of the Boltzmann machine, named after the physicist Ludwig Boltzmann, incorporated randomness into these networks, enabling today’s AI to generate diverse responses to the same input. Hinton also demonstrated that networks with more layers could exhibit increasingly complex behaviours and more efficiently learn desired actions.

2024 physics laureate Geoffrey Hinton used a network developed by his co-laureate John Hopfield as the foundation for a new network: the Boltzmann machine. This can learn to recognise characteristic elements in a given type of data.

The Boltzmann machine can be used to classify… pic.twitter.com/LMinR0vA0n

— The Nobel Prize (@NobelPrize) October 8, 2024

Despite the foundational nature of these concepts, interest in machine learning waned in the 1990s due to the immense computational power required. As French machine learning researcher Francis Bach noted, it wasn’t until the 2010s that a series of breakthroughs transformed image and language processing applications. Today, AI is integral to numerous applications, from medical imaging and autonomous driving to weather prediction and multimedia creation.

John Hopfield and Geoffrey Hinton have been awarded the 2024 Nobel Prize in Physics for foundational discoveries and inventions that enable machine learning with artificial neural networks, the award-giving body announced on Tuesday. #NobelPrize2024 pic.twitter.com/Xehgtu172E

— Global Times (@globaltimesnews) October 8, 2024

While Hinton had previously won the Turing Award, akin to a Nobel in computer science, the awarding of a Nobel Prize in Physics underscores the deep, interdisciplinary connections between physics and computing. Damien Querlioz, a French researcher, points out that these AI algorithms draw heavily from physics, applying energy concepts to computational processes.

Van der Wilk emphasizes that despite AI’s seeming creativity, the operations involved are purely computational, a simple yet vast series of multiplications and additions devoid of mystical elements.

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