What type of documents are typically included in the validation sample?

The validation sample is meant to ensure the quality and accuracy of the coding performed on documents within a dataset. Including a designated number of uncoded documents from the discard pile in the validation sample allows for an assessment of whether documents that were initially discarded due to perceived irrelevance or low priority should have been coded or retained.

Using uncoded documents from the discard pile is essential because it helps identify potential issues in the coding process and ensures a comprehensive review that goes beyond merely evaluating documents that have already been considered. This approach fosters a more robust quality assurance process since it challenges the assumption that discarded documents aren't relevant.

Additionally, including documents that have not been reviewed allows for an opportunity to refine the coding guidelines, improve the understanding of what constitutes a relevant document, and enhance overall data quality.