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computer science

Latest Articles

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.

a light blue cloudy swirl against a black background (evoking ink diffusing through a liquid). The blue cloud is overlaid with a network of yellow lines and circular nodes.
machine learning

The Physics Principle That Inspired Modern AI Art

By Anil Ananthaswamy
January 5, 2023
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Diffusion models generate incredible images by learning to reverse the process that, among other things, causes ink to spread through water.

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).

Quantized Columns

What Does It Mean to Align AI With Human Values?

By Melanie Mitchell
December 13, 2022
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Making sure our machines understand the intent behind our instructions is an important problem that requires understanding intelligence itself.

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.

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.

Illustration of electrified brain embedded within a computer chip.
artificial intelligence

New Chip Expands the Possibilities for AI

By Allison Whitten
November 10, 2022
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An energy-efficient chip called NeuRRAM fixes an old design flaw to run large-scale AI algorithms on smaller devices, reaching the same accuracy as wasteful digital computers.

A purple key drawn on a lattice of points.
explainers

How Cryptography’s Quantum-Safe Future Will Work

By Leila Sloman
November 9, 2022
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Lattice cryptography promises to protect secrets from the attacks of far-future quantum computers.


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