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AI finds a way to multiply with fewer operations

Did you know that an artificial intelligence has found a way to use fewer multiplications for a matrix calculation? AlphaTensor is presented in two thousand twenty-two.

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AI finds a way to multiply with fewer operations
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Did you know that an artificial intelligence has found a way to use fewer multiplications for a matrix calculation? AlphaTensor is presented in two thousand twenty-two. These tables of numbers are useful, but the illustration remains illustrative: it does not display equations discovered by the system. The problem is to organize operations to get the same result, with a different method. Fewer operations can help, but you need to check the algorithm. Animated blocks represent this research; their movement is not a demonstration or a measure of a computer's time.

An example cited multiplies a matrix four by five by a matrix five by five. The method uses seventy-six multiplications instead of eighty. This result is accurate: it doesn’t mean that all computers instantly become five percent faster.

The point is to explore combinations that researchers can then control and compare. The actual speed also depends on the hardware and implementation. A drop in the number of multiplications is therefore not the same as a universal promise on every piece of software running in every machine.

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What we know

In this example, multiplying a 4×5 matrix by a 5×5 matrix uses 76 multiplications rather than 80. An operation count does not guarantee a speed improvement on every hardware platform.

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References consulted on October 12, 2026.

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