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algorithms

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graph theory

Finally, a Fast Algorithm for Shortest Paths on Negative Graphs

By Ben Brubaker
January 18, 2023
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Researchers can now find the shortest route through a network nearly as fast as theoretically possible, even when some steps can cancel out others.

Purple illustration of round qubits pointing to rows of blocks that progressively become more chaotic.
quantum computing

New Algorithm Closes Quantum Supremacy Window

By Ben Brubaker
January 9, 2023
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Random circuit sampling, a popular technique for showing the power of quantum computers, doesn’t scale up if errors go unchecked.

2022 in Review

The Year in Computer Science

By Bill Andrews
December 21, 2022
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Computer scientists this year learned how to transmit perfect secrets, why transformers seem so good at everything, and how to improve on decades-old algorithms (with a little help from AI).

quantum computing

After a Quantum Clobbering, One Approach Survives Unscathed

By Allison Parshall
December 7, 2022
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A quantum approach to data analysis that relies on the study of shapes will likely remain an example of a quantum advantage — albeit for increasingly unlikely scenarios.

particle physics

Crucial Computer Program for Particle Physics at Risk of Obsolescence

By Matt von Hippel
December 1, 2022
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Maintenance of the software that’s used for the hardest physics calculations rests almost entirely with a retiree. The situation reveals the problematic incentive structure of academia.

neural networks

AI Reveals New Possibilities in Matrix Multiplication

By Ben Brubaker
November 23, 2022
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Inspired by the results of a game-playing neural network, mathematicians have been making unexpected advances on an age-old math problem.

Anima Anandkumar in a red dress holds a green cloth over her head
Q&A

The AI Researcher Giving Her Field Its Bitter Medicine

By Max G. Levy
August 30, 2022
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Anima Anandkumar wants computer scientists to move beyond the matrix, among other challenges.

An orange machine casts search lights over a purple landscape.
quantum computing

Quantum Algorithms Conquer a New Kind of Problem

By Mordechai Rorvig
July 11, 2022
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Computer scientists have found a new type of problem that quantum computers can solve dramatically faster than their classical counterparts.

A blue virtual being, made of neural networks, plays with colorful blocks inside a glowing sphere
machine learning

By Exploring Virtual Worlds, AI Learns in New Ways

By Allison Whitten
June 24, 2022
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Intelligent beings learn by interacting with the world. Artificial intelligence researchers have adopted a similar strategy to teach their virtual agents new tricks.


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