Fraunhofer-Institut für Produktionsanlagen und Konstruktionstechnik IPK

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Evaluate Similarity of Requirements with Multilingual Natural Language Processing

2022 , Bisang, Ursina Saskia , Brünnhäußer, Jörg , Lünnemann, Pascal , Kirsch, L. , Lindow, Kai

Finding redundant requirements or semantically similar ones in previous projects is a very time-consuming task in engineering design, especially with multilingual data. Due to modern NLP it is possible to automate such tasks. In this paper we compared different multilingual embeddings models to see which of them is the most suitable to find similar requirements in English and German. The comparison was done for both in-domain data (requirements pairs) and out-of-domain data (general sentence pairs). The most suitable model were sentence embeddings learnt with knowledge distillation.

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Geometric Design Process Automation with Artificial Intelligence

2022 , Brünnhäußer, Jörg , Lünnemann, Pascal , Bisang, Ursina Saskia , Novikov, Ruslan , Flachmeier, Florian , Wolff, Mario

Design tasks are largely performed manually by engineers, while machine learning is increasingly able to support and partially automate this process to save time or costs. The prerequisite for this is that the necessary data for training is available. This paper investigates whether it is possible to use data-driven methods to support the design of jounce bumpers at BASF. Based on the analysis of the use case, the geometry of the jounce bumper is approximated with a spline to generate suitable data for training. Based on this, data for training the machine learning model is generated and simulated. In the training process, the appropriate feedforward neural network and the best combination of hyperparameters are determined. In the subsequent evaluation process, it is shown that it is possible to predict the geometries of jounce bumpers with our proof of concept. Finally, the results are discussed, the limitations are shown and the next steps to further improve ssthe results are reflected.

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