Ignore hidden columns in AutoML schema checks of validation data - #4490
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daholste
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AutoML.NET
| $"and validation data has '{validationData.Schema.Count}' columns.", nameof(validationData)); | ||
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| foreach (var trainCol in trainData.Schema) |
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Could use a comment...
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| foreach (var trainCol in trainData.Schema) | |
| // Also indirectly checks for new columns in the validation datasets as we above enforce the column counts are equal | |
| foreach (var trainCol in trainData.Schema) |
I was otherwise going to suggest we check the reverse direction. A comment helps future readers to not have to think through it.
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Closes #4491
When the AutoML API consumes data, it validates schema consistency between the train and validation data.
There are two bugs in this logic:
The API asserts that the count of columns in the train and validation data must be equal. This throws an exception if the two data views have the same number of active columns but a different number of hidden columns. This PR updates to assert that the # of active (not hidden) columns in the train and validation data are equal.
If either the train or validation data has a hidden column with a type that differs from an active column of the same name, an exception is thrown. This PR restricts type consistency checks to active columns only.