find occurrence of patterns in labeled rows of a matrix

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didi 2018-3-15

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https://ww2.mathworks.cn/matlabcentral/answers/388529-find-occurrence-of-patterns-in-labeled-rows-of-a-matrix

编辑： didi 2018-3-15

Hi, I have a matrix with 18 columns, the first 17 refers to the parameters and the last one is the label. Each parameter can have a value 0, 1 or 2, and the labels are as well 0, 1 and 2. the rows of the matrix refers to the all possible combination of the 17 parameters. I would like to find a way to detect for each subset of the matrix with a certain label if a certain patterns of the 17 parameters is repeated in the subset. Let's assume I have only 5 parameters and a subset of the matrix labeled 0 like this: [0 0 0 1 1; 0 0 1 0 2; 0 0 1 1 2; 0 2 2 2 2; 1 0 0 0 0; 1 0 0 1 1; 1 0 2 0 0] there is a function in matlab able to recognize repeted pattern in the rows of this matrix?

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Guillaume 2018-3-15

So, in your example, which pattern are supposed to be detected? All the rows look unique to me.

didi 2018-3-15

编辑：didi 2018-3-15

I would like to search not for a specific pattern, but for any repeated pattern.For example in the first and second rows the first 2 elements are 0 0 * * *; in the second and third rows 0 0 1 * 2 is repeated; in the first and six rows the * 0 0 1 1 pattern is repeated. then I would like to cluster these repetitions respect the numbers of element repeated and positions.

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