Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1996-05-07
1997-09-16
Porta, David P.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
25033909, 364498, G01J 328, G01J 342
Patent
active
056683740
ABSTRACT:
This invention provides a method for infrared and near-infrared estimations of properties of materials with improved model stability against random and pseudo-random effects and improved assessment of the appropriateness of the model for an unknown sample. Statistical tests are defined for quantifying the model's stability against random effects (B-statistic) and the probability of substantial interpolation error (I-statistic). The method of this invention involves building many different infrared models for each property of interest, either randomly or by other strategies. The models with the lowest calibration errors for their respective calibration sets whose errors are least correlated to one another are averaged to create a composite model. Such composite models have improved stability and accuracy. The consistency with which the individual models (making up the composite model) estimate the same property value for an unknown sample is a measure of the improbability of substantial interpolation error.
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DiFoggio Rocco
Ranc Martha L.
Bruce David Vernon
Core Laboratories N.V.
Porta David P.
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