How to compare two matrices, row by matrix using the GPU

Question

kurio curio 2020-5-17

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/526163-how-to-compare-two-matrices-row-by-matrix-using-the-gpu

编辑： kurio curio 2020-5-17

Hi,

given the two matrices A and B I have to create the result matrix, in it we have 1 if the number of the matrix A is contained in the matrix B. We compare the whole matrix A with the elements of each row of the matrix B.

I managed to get the result with cycles but I would need a more efficient function, able to run with the GPU because the rows of the matrix B could be really many.

I thank in advance who will be kind enough to help me.

Thanks

Kurio

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Answer 1

David Hill 2020-5-17

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https://ww2.mathworks.cn/matlabcentral/answers/526163-how-to-compare-two-matrices-row-by-matrix-using-the-gpu#answer_432980

Not sure if something like this would work for you.

arrayfun(@(x)ismember(a,b(x,:)),1:size(b,1),'UniformOutput',false);

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kurio curio 2020-5-17

编辑：kurio curio 2020-5-17

Hi, David, I am a beginner and I had never used cells but I learn quickly. Your solution works perfectly, even with the GPU. You are a great. Thanks so much!

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