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This technique assumes that Source Dataset is split into two subsets: Training dataset and Validation dataset and perform the comparison of Goodness of fit over the two datasets.
It should be noted though that Source Dataset may not hold enough of representative events/occurrences to provide the opportunity for Cross-Validation and in this case the Goodness of fit over the Training dataset (which is the whole Source Dataset in this case) will be the only one available, thus increasing the risk of future Model Prediction.
See also
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Natural Science / System / Model
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