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Comparing the Applicability of Complexity Measurements for Simulink Models during Integration Testing – An Industrial Case Study

Conference paper
Authors Jan Schröder
Christian Berger
Thomas Herpel
Miroslaw Staron
Published in 2nd Workshop on Software Architecture Metrics (ICSE 2015)
Publication year 2015
Published at Department of Computer Science and Engineering (GU)
Language en
Subject categories Software Engineering

Abstract

Context: Simulink models are used during software integration testing in the automotive domain on hardware in the loop (HIL) rigs. As the amount of software in the car is increasing continuously, the number of Simulink models for control logic and plant models is increasing at the same time. Objective: The study aims for investigating the applicability of three approaches for evaluating model complexity in an industrial setting. Additionally, insights on the understanding of maintainability in industry are gathered. Method: Simulink models from two vehicle projects at a German premium car manufacturer are evaluated by applying the following three approaches: Assessing a model’s (a) size, (b) structure, and (c) signal routing. Afterwards, an interview study is conducted followed by an on-site workshop in order to validate the findings. Results: The measurements of 65 models resulted in comparable data for the three measurement approaches. Together with the interview studies, conclusions were made on how well each approach reflects the experts’ opinions. Additionally, it was possible to get insights on maintainability in an industrial setting. Conclusion: By analyzing the results, differences between the three measurement approaches were revealed. The interviews showed that the expert opinion tends to favor the results of the simple size measurements over the measurement including the signal routing.

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