Buschek, DanielAnlauff, CharlotteLachner, Florian2021-05-132021-05-132021https://dl.gi.de/handle/20.500.12116/36429This paper reflects on a case study of a user-centred concept development process for a Machine Learning (ML) based design tool, conducted at an industry partner. The resulting concept uses ML to match graphical user interface elements in sketches on paper to their digital counterparts to create consistent wireframes. A user study (N=20) with a working prototype shows that this concept is preferred by designers, compared to the previous manual procedure. Reflecting on our process and findings we discuss lessons learned for developing ML tools that respect practitioners’ needs and practices.enMachine learningpaper prototypingwireframesdesign processText/Journal Article10.1515/icom-2021-00022196-6826