Multivariate Regression of Curve fitting approach?

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Javier 2017-4-24

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https://ww2.mathworks.cn/matlabcentral/answers/336921-multivariate-regression-of-curve-fitting-approach

评论： John D'Errico 2017-4-24

I was wondering what may be the best approach to model the following situation.

I have two set of sensors readings, both sets are measuring the same amount of light but they are done with a different kind of sensor. I would like to calibrate one of the set of sensors based on the readings of the other ones. Thissituation leads to having the following graph

So I would like to fit data from sensors S1 and S2 to the called Ref variable, but I am not sure whether the best model is a multivariate regression or just a curve fitting approach, or maybe a different one.

Could you give me some idea of what kind of model fits better in this situation?

Thanks in advance,

regards!