AI & Computing

Artificial intelligence, machine learning, computer science and mathematics.

Abstract editorial illustration accompanying the article: A quantum method beat a classical benchmark on 72- and 148-qubit devices

A quantum method beat a classical benchmark on 72- and 148-qubit devices

Researchers developed a quantum method for the maximum cut problem and proved a stronger worst-case guarantee than a three-round version of a widely used approach. On IBM quantum devices with 72 and 148 qubits, the method exceeded a known classical hardness threshold, while the comparison method did not do so in the 148-qubit test.

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Abstract editorial illustration accompanying the article: The SCAN-C cipher gains no security from unusual key mixing

The SCAN-C cipher gains no security from unusual key mixing

A full-round analysis of the SCAN-C cipher found that its unusual XNOR key mixing adds no security compared with XOR. The researchers also report that the specified 12-round design can be attacked in an analysis requiring around 2^55 chosen plaintexts and 2^69 encryptions.

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Abstract editorial illustration accompanying the article: Researchers report strong performance from an AI model for stomach biopsy images
AI & Computing
Moderate evidenceHuman study

Researchers report strong performance from an AI model for stomach biopsy images

In a large human, multicenter cohort study, researchers developed and tested an artificial intelligence model for classifying stomach biopsy images. The model showed high reported accuracy in external and prospective testing and improved nine pathologists’ results in an auxiliary experiment, but the study did not establish effects on patient outcomes or performance in every clinical setting.

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