問題文
A paper mill's quality model is trained on records from its own laboratory. The mill wants to add records from a laboratory it acquired last year. An auditor is asked what the mill gains and what it risks. Which reply is correct?
選択肢
- It gains a means of validating the model, since the acquired laboratory's records were produced independently of the mill's own and can therefore serve as a held-out set against which the existing model's performance can be measured without any need to retrain it on the combined data at all.
- It gains coverage that adds nothing because the acquired laboratory tests the same product, and it risks the storage and processing cost of holding twice the volume of records without any improvement in the quality of the predictions the model produces.
- It gains coverage of conditions the model has not seen, and it risks mixing two measurement conventions that the model will treat as one, since neither laboratory recorded which convention applied.
- It gains a larger training set and risks nothing, because more records always improve performance.