Ophthalmology

AI to improve cataract surgery in the Global South

While the adequate surgical treatment of cataract is guaranteed in high-income countries, the surgical results in the Global South are often inadequate. Video recording can be used to analyze possible surgical errors, improve ...

Ophthalmology

As AI eye exams prove their worth, lessons for future tech emerge

Christian Espinoza, director of a Southern California drug-treatment provider, recently began employing a powerful new assistant: an artificial intelligence algorithm that can perform eye exams with pictures taken by a retinal ...

Medical research

Efforts underway to eliminate harmful race-based clinical algorithms

Increased attention to harmful race-based clinical algorithms—equations and decision-making tools that misuse race as a proxy for genetic or biological ancestry—has led to the reconsideration of these algorithms in many ...

Neuroscience

New guidance approves AI-derived software for stroke assessments

Two cutting-edge artificial intelligence tools used to assist the diagnosis of strokes have been approved by the National Institute for Health and Care Excellence (NICE). The team of national experts, which includes researchers ...

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Algorithm

In mathematics, computing, linguistics, and related subjects, an algorithm is a finite sequence of instructions, an explicit, step-by-step procedure for solving a problem, often used for calculation and data processing. It is formally a type of effective method in which a list of well-defined instructions for completing a task, will when given an initial state, proceed through a well-defined series of successive states, eventually terminating in an end-state. The transition from one state to the next is not necessarily deterministic; some algorithms, known as probabilistic algorithms, incorporate randomness.

A partial formalization of the concept began with attempts to solve the Entscheidungsproblem (the "decision problem") posed by David Hilbert in 1928. Subsequent formalizations were framed as attempts to define "effective calculability" (Kleene 1943:274) or "effective method" (Rosser 1939:225); those formalizations included the Gödel-Herbrand-Kleene recursive functions of 1930, 1934 and 1935, Alonzo Church's lambda calculus of 1936, Emil Post's "Formulation 1" of 1936, and Alan Turing's Turing machines of 1936–7 and 1939.

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