Definition: Mixed imputation
UN - Data editing terminology
In most systems there usually is a mixture of categories used in some fixed rank fashion for all items. For example, first a deterministic approach is used. If it is not successful, then a hot deck approach is tried. This is followed by a model-based approach. If all these approaches fail, then a manual imputation occurs through a human review process.
Economic Commission for Europe of the United Nations (UNECE), The Knowledge Base on Statistical Data Editing, Online glossary developed by the UNECE Data Editing Group, 2000