Communications of the ACM
A Healthy Dose of AI
Building artificial intelligence into medical devices can speed diagnoses and potentially improve treatments and outcomes.
From ACM NewsAn edited collection of advanced computing news from Communications of the ACM, ACM TechNews, other ACM resources, and news sites around the Web.
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Alan Turing and the Power of Negative Thinking
Mathematical proofs based on a technique called diagonalization can be relentlessly contrarian, but they help reveal the limits of algorithms.
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Complexity Theory's 50-Year Journey to the Limits of Knowledge
How hard is it to prove that problems are hard to solve? Meta-complexity theorists have been asking questions like this for decades. A string of recent results...
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The Most Important Machine That Was Never Built
When he invented Turing machines in 1936, Alan Turing also invented modern computing.
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Researchers Discover a More Flexible Approach to Machine Learning
"Liquid" neural nets, based on a worm's nervous system, can transform their underlying algorithms on the fly, giving them unprecedented speed and adaptability. ...
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Finally, a Fast Algorithm for Shortest Paths on Negative Graphs
Researchers can now find the shortest route through a network nearly as fast as theoretically possible, even when some steps can cancel out others.
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Physicists Create a Wormhole Using a Quantum Computer
Exploring the possibility that space-time somehow emerges from quantum information.
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Cryptography's Future Will Be Quantum-Safe. Here’s How It Will Work
Lattice cryptography promises to protect secrets from the attacks of far-future quantum computers.
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Self-Taught AI Shows Similarities to How the Brain Works
Self-supervised learning allows a neural network to figure out for itself what matters. The process might be what makes our own brains so successful.
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The Scientist Who Developed a New Way to Understand Communication
Mark Braverman has spent his career translating thorny problems into the language of information complexity.
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By Exploring Virtual Worlds, AI Learns in New Ways
Intelligent beings learn by interacting with the world. Artificial intelligence researchers have adopted a similar strategy to teach their virtual agents new skills...
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Researchers Achieve 'Absurdly Fast' Algorithm for Network Flow
Computer scientists can now solve a decades-old problem in practically the time it takes to write it down.
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Researchers Identify 'Master Problem' Underlying All Cryptography
The existence of secure cryptography depends on one of the oldest questions in computational complexity.
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AI Overcomes Stumbling Block on Brain-Inspired Hardware
Algorithms that use the brain's communication signal can now work on analog neuromorphic chips, which closely mimic our energy-efficient brains.
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What Does It Mean for AI to Understand?
It's simple enough for AI to seem to comprehend data, but devising a true test of a machine's knowledge has proved difficult.
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A New Link to an Old Model Could Crack the Mystery of Deep Learning
To help them explain the shocking success of deep neural networks, researchers are turning to older but better-understood models of machine learning.
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Matrix Multiplication Inches Closer to Mythic Goal
A recent paper set the fastest record for multiplying two matrices. But it also marks the end of the line for a method researchers have relied on for decades to...
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Pioneers Linking Math and Computer Science Win the Abel Prize
Avi Wigderson and László Lovász won for their work developing complexity theory and graph theory, respectively, and for connecting the two fields.
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Computer Scientists Achieve 'Crown Jewel' of Cryptography
A cryptographic master tool called indistinguishability obfuscation has for years seemed too good to be true. Three researchers have figured out that it can work...
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The Computer Scientist Who Can’t Stop Telling Stories
For pioneering computer scientist Donald Knuth, good coding is synonymous with beautiful expression.
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