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A pedantic example: a model that ignored the training data would do just as well on the training set as on the test set.
by onos 3y ago
A pedantic example: a model that ignored the training data would do just as well on the training set as on the test set.
- tesdinger 3y agoIf you do not train on the training set, then there is no training set, and your example is degenerate.
- maxbond 3y agoWe've trained on the training set, but our fit() implementation was, "accept the input, do nothing with it, and then return." When we then evaluate the model on the test set and training set, assuming there isn't a large covariant shift between the two or something, we'll get approximately equal values. So it's a degenerate case, but not of the training set. (And presumably that's partly what they meant by "pedantic".)