Summary
Efficient testing is a crucial prerequisite to engineer reliable automotive software successfully. However, manually deriving test cases from ambiguous textual requirements is costly and error‐prone. Model‐based software engineering captures requirements in structured, comprehensible, and formal models, which enables early consistency checking and verification. Moreover, these models serve as an indispensable basis for automated test case derivation. To facilitate automated test case derivation for automotive software engineering, we conducted a survey with testing experts of the BMW Group and conceived a method to extend the BMW Group's specification method for requirements, design, and test methodology by model‐based test case derivation. Our method is realized for a variant of systems modeling language activity diagrams tailored toward testing automotive software and a model transformation to derive executable test cases. Hereby, we can address many of the surveyed practitioners' challenges and ultimately facilitate quality assurance for automotive software.
More and more tasks become solvable using deep learning technology nowadays. Consequently, the amount of neural network code in software rises continuously. To make the new paradigm more accessible, frameworks, languages, and tools keep emerging. Although, the maturity of these tools is steadily increasing, we still lack appropriate domain specific languages and a high degree of automation when it comes to deep learning for productive systems. In this paper we present a multi-paradigm language family allowing the AI engineer to model and train deep neural networks as well as to integrate them into software architectures containing classical code. Using input and output layers as strictly typed interfaces enables a seamless embedding of neural networks into component-based models. The lifecycle of deep learning components can then be governed by a compiler accordingly, e.g. detecting when (re-)training is necessary or when network weights can be shared between different network instances. We provide a compelling case study, where we train an autonomous vehicle for the TORCS simulator. Furthermore, we discuss how the methodology automates the AI development process if neural networks are changed or added to the system.
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