Structuring Validation Targets of a Machine Learning Function Applied to Automated Driving

摘要

The validation of highly automated driving vehicles is an important challenge to the automotive industry, since even if the system is free from internal faults, its behaviour might still vary from the original intent. Reasons for these deviations from the intended functionality can be found in the unpredictability of environmental conditions as well the intrinsic uncertainties of the Machine Learning (ML) functions used to make sense of this complex input space. In this paper, we propose a safety assurance case for a pedestrian detection function, a safety-relevant baseline functionality for an automated driving system. Our safety assurance case is presented in the graphical structuring notation (GSN) and combines our arguments against the problems of underspecification [9], the semantic gap [3], and the deductive gap [16].