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I have a regression problem of a feature and a target which seems to be done by algorithms such as linear regression, multi-layer perceptron etc. The image below seems to be the final result as the linear regression needs just mean-squared error and its coefficients. enter image description here

But on the other hand, also these two axes are highly correlated to some other thing and the process can not be generalized. I was wondering if PCA can be good or useful for this problem or not. To make it a little bit clear the dataset is like below:

Time step1

feature 1       | feature 2            | feature 3 | feature 4 |
constantValue 1 |constantValue 1       |   x1      |     y1    |
...
constantValue 1 |constantValue 1       |   x1000   |     y1000 |

Time step2

feature 1       | feature 2            | feature 3 | feature 4 |
constantValue 2 |constantValue 2       |   x1      |     y1    |
...
constantValue 2 |constantValue 2       |   x1000   |     y1000 |

Time step3

feature 1       | feature 2            | feature 3 | feature 4 |
constantValue 3 |constantValue 3       |   x1      |     y1    |
...
constantValue 3 |constantValue 3       |   x1000   |     y1000 |

The constant values of features 1 and 2 are different from each other but they are all repeated for 1000 rows of features 3 and 4. The goal is to find a distinctive behavior for each group which seems to be a classification problem while doing a regression for each of which is the only thing that can be done because it can give me MSE and by comparing it, we can classify it but I think doing something like Clustering, PCA or using Unsupervised learning methods can help me out.

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  • $\begingroup$ I can't tell what's actually going on here. Please explain concretely (i) what your data set is (ii) what you hope to achieve (iii) what you have tried and (iv) why you are not satisfied with what you have already tried $\endgroup$
    – jcken
    Commented Nov 11, 2021 at 10:07
  • 1
    $\begingroup$ @jcken you were right, I tired to make it a bit clear, and I hope I did well $\endgroup$ Commented Nov 11, 2021 at 10:20

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