Grey-box techniques for explainable AI make some use of the internal structure of a complex machine learning model, such as a deep neural network. They choose an internal layer and then perform some analysis of the layer itself or apply black-box techniques to the parts of the network that lie either side of the layer.
Used in Chap. 21: pages 336, 339, 340
Used in glossary entries: black-box machine learning, deep neural network, explainable AI, machine learning

Grey-box techniques prising open the black-box at an internal layer