A regression model creation method, a regression model creation device, and a regression model creation program generate a regression model established between a measurement data set that is obtained by measuring the first property of a sample with a plurality of channels and property data that is obtained by measuring the second property of the sample corresponding to the measurement data set. When the regression model is generated, the measurement data set is smoothed to generate a first data set, the first data set is subjected to dimensional compression to generate a second data set, and a function for explaining property data is calculated on the basis of the second data set.
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