Thank you for the suggestion and your time, but what key phrase do you suggest I do use instead of the "change point analysis" may be it would help me find more information that could help. However, I will look at the MCMC and see how it works, though the videos I saw does not show the practical demonstration of these suggestion of the MCMC and try to program a data. I will just try to follow the example in the link and see what comes out if it is meaningful.
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